1. Introduction
                    
                    
                
                    
                        2. Avalon® -ST Serial Peripheral Interface Core
                    
                    
                
                    
                        3. SPI Core
                    
                    
                
                    
                        4. SPI Agent/JTAG to Avalon® Host Bridge Cores
                    
                    
                
                    
                        5. Intel eSPI Agent Core
                    
                    
                
                    
                        6. eSPI to LPC Bridge Core
                    
                    
                
                    
                        7. Ethernet MDIO Core
                    
                    
                
                    
                        8. Intel FPGA 16550 Compatible UART Core
                    
                    
                
                    
                        9. UART Core
                    
                    
                
                    
                        10. Lightweight UART Core
                    
                    
                
                    
                        11. JTAG UART Core
                    
                    
                
                    
                        12. Intel FPGA Avalon® Mailbox Core
                    
                    
                
                    
                        13. Intel FPGA Avalon® Mutex Core
                    
                    
                
                    
                        14. Intel FPGA Avalon® I2C (Host) Core
                    
                    
                
                    
                        15. Intel FPGA I2C Agent to Avalon® -MM Host Bridge Core
                    
                    
                
                    
                        16. EPCS/EPCQA Serial Flash Controller Core
                    
                    
                
                    
                        17. Intel FPGA Serial Flash Controller Core
                    
                    
                
                    
                        18. Intel FPGA Serial Flash Controller II Core
                    
                    
                
                    
                        19. Intel FPGA Generic QUAD SPI Controller Core
                    
                    
                
                    
                        20. Intel FPGA Generic QUAD SPI Controller II Core
                    
                    
                
                    
                        21. Interval Timer Core
                    
                    
                
                    
                        22. Intel FPGA Avalon FIFO Memory Core
                    
                    
                
                    
                        23. On-Chip Memory (RAM and ROM) Intel FPGA IP
                    
                    
                
                    
                        24. On-Chip Memory II (RAM or ROM) Intel FPGA IP
                    
                    
                
                    
                        25. PIO Core
                    
                    
                
                    
                        26. PLL Cores
                    
                    
                
                    
                        27. DMA Controller Core
                    
                    
                
                    
                        28. Modular Scatter-Gather DMA Core
                    
                    
                
                    
                        29. Scatter-Gather DMA Controller Core
                    
                    
                
                    
                        30. Video Sync Generator and Pixel Converter Cores
                    
                    
                
                    
                        31. Intel FPGA Interrupt Latency Counter Core
                    
                    
                
                    
                        32. Performance Counter Unit Core
                    
                    
                
                    
                        33. Vectored Interrupt Controller Core
                    
                    
                
                    
                        34. System ID Peripheral Core
                    
                    
                
                    
                        35. Intel FPGA GMII to RGMII Converter Core
                    
                    
                
                    
                        36. HPS GMII to RGMII Adapter IP
                    
                    
                
                    
                        37. Intel FPGA MII to RMII Converter Core
                    
                    
                
                    
                        38. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core IP
                    
                    
                
                    
                        39. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core
                    
                    
                
                    
                        40. Intel FPGA MSI to GIC Generator Core
                    
                    
                
                    
                        41. Cache Coherency Translator IP
                    
                    
                
                    
                        42. Altera ACE5-Lite Cache Coherency Translator
                    
                    
                
            
        
                                    
                                    
                                        
                                        
                                            8.2.1. Unsupported Features
                                        
                                        
                                    
                                        
                                        
                                            8.2.2. Interface
                                        
                                        
                                    
                                        
                                        
                                            8.2.3. General Architecture
                                        
                                        
                                    
                                        
                                        
                                            8.2.4. 16550 UART General Programming Flow Chart
                                        
                                        
                                    
                                        
                                        
                                            8.2.5. Configuration Parameters
                                        
                                        
                                    
                                        
                                        
                                            8.2.6. DMA Support
                                        
                                        
                                    
                                        
                                        
                                            8.2.7. FPGA Resource Usage
                                        
                                        
                                    
                                        
                                        
                                            8.2.8. Timing and Fmax
                                        
                                        
                                    
                                        
                                            8.2.9. Avalon® -MM Agent
                                        
                                        
                                        
                                    
                                        
                                            8.2.10. Over-run/Under-run Conditions
                                        
                                        
                                        
                                    
                                        
                                        
                                            8.2.11. Hardware Auto Flow-Control
                                        
                                        
                                    
                                        
                                        
                                            8.2.12. Clock and Baud Rate Selection
                                        
                                        
                                    
                                
                            
                                                
                                                
                                                    
                                                    
                                                        14.5.2.1. Transfer Command FIFO (TFR_CMD)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.2. Receive Data FIFO (RX_DATA)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.3. Control Register (CTRL)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.4. Interrupt Status Enable Register (ISER)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.5. Interrupt Status Register (ISR)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.6. Status Register (STATUS)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.7. TFR CMD FIFO Level (TFR CMD FIFO LVL)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.8. RX Data FIFO Level (RX Data FIFO LVL)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.9. SCL Low Count (SCL LOW)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.10. SCL High Count (SCL HIGH)
                                                    
                                                    
                                                
                                                    
                                                    
                                                        14.5.2.11. SDA Hold Count (SDA HOLD)
                                                    
                                                    
                                                
                                            
                                        
                                    
                                    
                                        
                                        
                                            22.6.1. altera_avalon_fifo_init()
                                        
                                        
                                    
                                        
                                        
                                            22.6.2. altera_avalon_fifo_read_status()
                                        
                                        
                                    
                                        
                                        
                                            22.6.3. altera_avalon_fifo_read_ienable()
                                        
                                        
                                    
                                        
                                        
                                            22.6.4. altera_avalon_fifo_read_almostfull()
                                        
                                        
                                    
                                        
                                        
                                            22.6.5. altera_avalon_fifo_read_almostempty()
                                        
                                        
                                    
                                        
                                        
                                            22.6.6. altera_avalon_fifo_read_event()
                                        
                                        
                                    
                                        
                                        
                                            22.6.7. altera_avalon_fifo_read_level()
                                        
                                        
                                    
                                        
                                        
                                            22.6.8. altera_avalon_fifo_clear_event()
                                        
                                        
                                    
                                        
                                        
                                            22.6.9. altera_avalon_fifo_write_ienable()
                                        
                                        
                                    
                                        
                                        
                                            22.6.10. altera_avalon_fifo_write_almostfull()
                                        
                                        
                                    
                                        
                                        
                                            22.6.11. altera_avalon_fifo_write_almostempty()
                                        
                                        
                                    
                                        
                                        
                                            22.6.12. altera_avalon_write_fifo()
                                        
                                        
                                    
                                        
                                        
                                            22.6.13. altera_avalon_write_other_info()
                                        
                                        
                                    
                                        
                                        
                                            22.6.14. altera_avalon_fifo_read_fifo()
                                        
                                        
                                    
                                        
                                        
                                            22.6.15. altera_avalon_fifo_read_other_info()
                                        
                                        
                                    
                                
                            
                        
                        
                            
                            
                                23.1. Core Overview
                            
                        
                            
                                23.2. Component-Level Design for On-Chip Memory
                            
                            
                        
                            
                            
                                23.3. Platform Designer System-Level Design for On-Chip Memory
                            
                        
                            
                            
                                23.4. Simulation for On-Chip Memory
                            
                        
                            
                            
                                23.5. Quartus® Prime Project-Level Design for On-Chip Memory
                            
                        
                            
                            
                                23.6. Board-Level Design for On-Chip Memory
                            
                        
                            
                            
                                23.7. Example Design with On-Chip Memory
                            
                        
                            
                            
                                23.8. On-Chip Memory (RAM and ROM) Intel FPGA IP Revision History
                            
                        
                    
                
                        
                        
                            
                            
                                24.1. Core Overview
                            
                        
                            
                            
                                24.2. Embedded Memory Architecture and Features
                            
                        
                            
                                24.3. Component-Level Configurations
                            
                            
                        
                            
                                24.4. Interface Signals
                            
                            
                        
                            
                                24.5. Control and Status Registers
                            
                            
                        
                            
                                24.6. Software Programming Model
                            
                            
                        
                            
                            
                                24.7. Platform Designer System-Level Design for On-Chip Memory II
                            
                        
                            
                            
                                24.8. Simulation for On-Chip Memory II
                            
                        
                            
                            
                                24.9. Quartus® Prime Project-Level Design for On-Chip Memory II
                            
                        
                            
                            
                                24.10. Board-Level Design for On-Chip Memory II
                            
                        
                            
                            
                                24.11. Example Design with On-Chip Memory II
                            
                        
                            
                            
                                24.12. On-Chip Memory II (RAM and ROM) Intel FPGA IP Revision History
                            
                        
                    
                
                        
                        
                            
                            
                                28.1. Core Overview
                            
                        
                            
                                28.2. Feature Description
                            
                            
                        
                            
                                28.3. mSGDMA Descriptors
                            
                            
                        
                            
                                28.4. mSGDMA Descriptors with Prefetcher
                            
                            
                        
                            
                                28.5. mSGDMA IP Interface
                            
                            
                        
                            
                            
                                28.6. mSGDMA Interrupt
                            
                        
                            
                                28.7. Register Map of mSGDMA
                            
                            
                        
                            
                                28.8. Parameters
                            
                            
                        
                            
                                28.9. mSGDMA Programming Model
                            
                            
                        
                            
                                28.10. mSGDMA Prefetcher Programming Model
                            
                            
                        
                            
                                28.11. Driver Implementation
                            
                            
                        
                            
                            
                                28.12. Example Code Using mSGDMA Core
                            
                        
                            
                                28.13. Modular Scatter-Gather DMA Prefetcher Core
                            
                            
                        
                            
                                28.14. Modular Scatter-Gather DMA Dispatcher Core
                            
                            
                        
                            
                                28.15. Modular Scatter-Gather DMA Write Master Core
                            
                            
                        
                            
                                28.16. Modular Scatter-Gather DMA Read Master Core
                            
                            
                        
                            
                            
                                28.17. Modular Scatter-Gather DMA Core Revision History
                            
                        
                    
                
                                    
                                    
                                        
                                        
                                            28.7.1. Status Register (Offset 0x0)
                                        
                                        
                                    
                                        
                                        
                                            28.7.2. Control Register (Offset 0x4)
                                        
                                        
                                    
                                        
                                        
                                            28.7.3. Read and Write Fill Level Register (Offset 0x8)
                                        
                                        
                                    
                                        
                                        
                                            28.7.4. Response Fill Level Register (Offset 0xC)
                                        
                                        
                                    
                                        
                                        
                                            28.7.5. Sequence Number Register (Offset 0x10)
                                        
                                        
                                    
                                        
                                        
                                            28.7.6. Component Configuration 1 Register (Offset 0x14)
                                        
                                        
                                    
                                        
                                        
                                            28.7.7. Component Configuration 2 Register (Offset 0x18)
                                        
                                        
                                    
                                        
                                        
                                            28.7.8. Component Specification Register (Offset 0x1C)
                                        
                                        
                                    
                                        
                                        
                                            28.7.9. Response Register (when MM response port is enabled)
                                        
                                        
                                    
                                        
                                        
                                            28.7.10. Prefetcher Register
                                        
                                        
                                    
                                
                            
                                    
                                    
                                        
                                        
                                            28.11.1. alt_msgdma_standard_descriptor_async_transfer
                                        
                                        
                                    
                                        
                                        
                                            28.11.2. alt_msgdma_extended_descriptor_async_transfer
                                        
                                        
                                    
                                        
                                        
                                            28.11.3. alt_msgdma_standard_descriptor_sync_transfer
                                        
                                        
                                    
                                        
                                        
                                            28.11.4. alt_msgdma_extended_descriptor_sync_transfer
                                        
                                        
                                    
                                        
                                        
                                            28.11.5. alt_msgdma_descriptor_sync_transfer
                                        
                                        
                                    
                                        
                                        
                                            28.11.6. alt_msgdma_construct_standard_st_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.7. alt_msgdma_construct_standard_mm_to_st_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.8. alt_msgdma_construct_standard_mm_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.9. alt_msgdma_construct_extended_st_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.10. alt_msgdma_construct_extended_mm_to_st_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.11. alt_msgdma_construct_extended_mm_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.12. alt_msgdma_construct_prefetcher_standard_mm_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.13. alt_msgdma_construct_prefetcher_standard_st_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.14. alt_msgdma_construct_prefetcher_standard_mm_to_st_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.15. alt_msgdma_construct_prefetcher_extended_mm_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.16. alt_msgdma_construct_prefetcher_extended_st_to_mm_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.17. alt_msgdma_construct_prefetcher_extended_mm_to_st_descriptor
                                        
                                        
                                    
                                        
                                        
                                            28.11.18. alt_msgdma_prefetcher_add_standard_desc_to_list
                                        
                                        
                                    
                                        
                                        
                                            28.11.19. alt_msgdma_prefetcher_add_extended_desc_to_list
                                        
                                        
                                    
                                        
                                        
                                            28.11.20. alt_msgdma_start_prefetcher_with_std_desc_list
                                        
                                        
                                    
                                        
                                        
                                            28.11.21. alt_msgdma_start_prefetcher_with_extd_desc_list
                                        
                                        
                                    
                                        
                                        
                                            28.11.22. alt_msgdma_register_callback
                                        
                                        
                                    
                                        
                                        
                                            28.11.23. alt_msgdma_open
                                        
                                        
                                    
                                        
                                        
                                            28.11.24. alt_msgdma_init
                                        
                                        
                                    
                                
                            
                                                            
                                                            
                                                                
                                                                
                                                                    28.14.7.1.1. Status Register (Offset 0x0)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.2. Control Register (Offset 0x4)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.3. Read and Write Fill Level Register (Offset 0x8)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.4. Response Fill Level Register (Offset 0xC)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.5. Sequence Number Register (Offset 0x10)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.6. Component Configuration 1 Register (Offset 0x14)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.7. Component Configuration 2 Register (Offset 0x18)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.8. Component Specification Register (Offset 0x1C)
                                                                
                                                                
                                                            
                                                                
                                                                
                                                                    28.14.7.1.9. Response Register (when MM response port is enabled)
                                                                
                                                                
                                                            
                                                        
                                                    
                                    
                                    
                                        
                                        
                                            29.7.1. Data Structure
                                        
                                        
                                    
                                        
                                        
                                            29.7.2. SG-DMA API
                                        
                                        
                                    
                                        
                                        
                                            29.7.3. alt_avalon_sgdma_do_async_transfer()
                                        
                                        
                                    
                                        
                                        
                                            29.7.4. alt_avalon_sgdma_do_sync_transfer()
                                        
                                        
                                    
                                        
                                        
                                            29.7.5. alt_avalon_sgdma_construct_mem_to_mem_desc()
                                        
                                        
                                    
                                        
                                        
                                            29.7.6. alt_avalon_sgdma_construct_stream_to_mem_desc()
                                        
                                        
                                    
                                        
                                        
                                            29.7.7. alt_avalon_sgdma_construct_mem_to_stream_desc()
                                        
                                        
                                    
                                        
                                        
                                            29.7.8. alt_avalon_sgdma_enable_desc_poll()
                                        
                                        
                                    
                                        
                                        
                                            29.7.9. alt_avalon_sgdma_disable_desc_poll()
                                        
                                        
                                    
                                        
                                        
                                            29.7.10. alt_avalon_sgdma_check_descriptor_status()
                                        
                                        
                                    
                                        
                                        
                                            29.7.11. alt_avalon_sgdma_register_callback()
                                        
                                        
                                    
                                        
                                        
                                            29.7.12. alt_avalon_sgdma_start()
                                        
                                        
                                    
                                        
                                        
                                            29.7.13. alt_avalon_sgdma_stop()
                                        
                                        
                                    
                                        
                                        
                                            29.7.14. alt_avalon_sgdma_open()
                                        
                                        
                                    
                                
                            
                                                
                                                
                                                    
                                                    
                                                        33.5.6.1. altera_vic_driver.enable_preemption
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.2. altera_vic_driver.enable_preemption_into_new_register_set
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.3. altera_vic_driver.enable_preemption_rs_<n>
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.4. altera_vic_driver.linker_section
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.5. altera_vic_driver.<name>.vec_size
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.6. altera_vic_driver.<name>.irq<n>_rrs
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.7. altera_vic_driver.<name>.irq<n>_ril
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.8. altera_vic_driver.<name>.irq<n>_rnmi
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.9. Default Settings for RRS and RIL
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.10. VIC BSP Design Rules for Intel FPGA HAL Implementation
                                                    
                                                    
                                                
                                                    
                                                    
                                                        33.5.6.11. RTOS Considerations
                                                    
                                                    
                                                
                                            
                                        41.5. Interface Signals
| Signal Names | Direction | Description | 
|---|---|---|
| ACE-LITE Manager | ||
| axm_m0_araddr | Output | The address of the first transfer in a read transaction. | 
| axm_m0_arbar | Output | Provides information on barrier type in a read transaction. | 
| axm_m0_arburst | Output | Burst type. Indicates how the address changes between each transfer in a read transaction. | 
| axm_m0_arcache | Output | Indicates how a read transaction is required to progress though a system. | 
| axm_m0_ardomain | Output | Provides information on shareability domain in a read transaction. | 
| axm_m0_arid | Output | Identification tag for a read transaction. | 
| axm_m0_arlen | Output | The exact number of data transfer in a read transaction. | 
| axm_m0_arlock | Output | Provides information about the atomic characteristics of a read transaction. | 
| axm_m0_arprot | Output | Protection attributes of a read transaction: privilege, security level, and access type. | 
| axm_m0_arqos | Output | Quality of service indentifier for a read transaction. | 
| axm_m0_arready | Input | Indicates that a transfer on the read address channel can be accepted. | 
| axm_m0_arsize | Output | The number of bytes in each data transfer in a read transaction. | 
| axm_m0_arsnoop | Output | Indicates the transaction type in a shareable read transaction. | 
| axm_m0_aruser | Output | User-defined extension for the read address channel. | 
| axm_m0_arvalid | Output | Indicates valid read address channel signals. | 
| axm_m0_awaddr | Output | The address of the first transfer in a write transaction | 
| axm_m0_awbar | Output | Provides information on barrier type in a write transaction. | 
| axm_m0_awburst | Output | Burst type. Indicates how address changes between each transfer in a write transaction. | 
| axm_m0_awcache | Output | Indicates how a write transaction is required to progress through a system. | 
| axm_m0_awdomain | Output | Provides information on shareability domain in a write transaction. | 
| axm_m0_awid | Output | Identification tag for a write transaction. | 
| axm_m0_awlen | Output | The exact number of data transfer in a write transaction. This information determines the number of data transfers associated with the address. | 
| axm_m0_awlock | Output | Provides information about the atomic characteristics of a write transaction. | 
| axm_m0_awprot | Output | Protection attributes of a write transactions: privilege, security level, and access type. | 
| axm_m0_awqos | Output | Quality of Service identifier for a write transaction. | 
| axm_m0_awready | Input | Indicates that a transfer on the write address channel can be accepted. | 
| axm_m0_awsize | Output | The number of bytes in each data transfer in a write transaction. | 
| axm_m0_awsnoop | Output | Indicates the transaction type in a shareable write transaction. | 
| axm_m0_awuser | Output | User-defined extension for the write address channel. | 
| axm_m0_awvalid | Output | Indicates valid write address channel signals. | 
| axm_m0_bid | Input | Identification tag for a write response. | 
| axm_m0_bready | Output | Indicates that a transfer on the write response channel can be accepted. | 
| axm_m0_bresp | Input | Indicates the status of a write transaction. | 
| axm_m0_bvalid | Input | Indicates valid write response response channel signals. | 
| axm_m0_rdata | Input | Read data. | 
| axm_m0_rid | Input | Identification tag for read data and response. | 
| axm_m0_rlast | Input | Indicates whether this is the last data transfer in a read transaction. | 
| axm_m0_rready | Output | Indicates that a transfer on the read data channel can be accepted. | 
| axm_m0_rresp | Input | Indicates the status of a read transfer. | 
| axm_m0_rvalid | Input | Indicates valid the read data channel signals. | 
| axm_m0_wdata | Output | Write data. | 
| axm_m0_wlast | Output | Indicates whether this is the last data transfer in a write transaction. | 
| axm_m0_wready | Input | Indicates that a transfer on the write data channel can be accepted. | 
| axm_m0_wstrb | Output | Write strobes. Indicates which byte lanes hold valid data. | 
| axm_m0_wvalid | Output | Indicates valid write data channel signals. | 
| AXI-4 Subordinate | ||
| axs_s0_araddr | Output | The address of the first transfer in a read transaction. | 
| axs_s0_arburst | Output | Burst type. Indicates how the address changes between each transfer in a read transaction. | 
| axs_s0_arcache | Output | Indicates how a read transaction is required to progress through a system. | 
| axs_s0_arid | Output | Identification tag for a read transaction. | 
| axs_s0_arlen | Output | The exact number of data transfers in a read transaction. | 
| axs_s0_arlock | Output | Provides information about the atomic characteristics of a read transaction. | 
| axs_s0_arprot | Output | Protection attributes of a read transaction: privilege, security level, and access type. | 
| axs_s0_arready | Output | Indicates that a transfer on the read address channel can be accepted. | 
| axs_s0_arsize | Output | The number of bytes in each data transfer in a read transaction. | 
| axs_s0_arvalid | Output | Indicates valid read address channel signals. | 
| axs_s0_awaddr | Input | The address of the first transfer in a write transaction. | 
| axs_s0_awburst | Output | Burst type. Indicates how the address changes between each transfer in a write transaction. | 
| axs_s0_awcache | Output | Indicates how a write transaction is required to progress through a system. | 
| axs_s0_awid | Output | Identification tag for a write transaction. | 
| axs_s0_awlen | Output | The exact number of data transfers in a write transaction. This information determines the number of data transfers associated with the address. | 
| axs_s0_awlock | Output | Provides information about the atomic characteristics of a write transaction. | 
| axs_s0_awprot | Output | Protection attributes of a write transactions: privilege, security level, and access type. | 
| axs_s0_awready | Output | Indicates that a transfer on the write address channel can be accepted. | 
| axs_s0_awsize | Output | The number of bytes in each data transfer in a write transaction. | 
| axs_s0_awvalid | Output | Indicates valid write address channel signals. | 
| axs_s0_bid | Output | Identification tag for a write response. | 
| axs_s0_bready | Output | Indicates that a transfer on the write response channel can be accepted. | 
| axs_s0_bresp | Output | Write response. Indicates the status of a write transaction. | 
| axs_s0_rdata | Output | Read data. | 
| axs_s0_rid | Input | Identification tag for read data and response. | 
| axs_s0_rlast | Output | Indicates whether this is the last data transfer in a read transaction. | 
| axs_s0_rready | Output | Indicates that a transfer on the read data channel can be accepted. | 
| axs_s0_rresp | Output | Read response. Indicates the status of a read transfer. | 
| axs_s0_rvalid | Output | Indicates valid read data channel signals. | 
| axs_s0_wdata | Input | Write data. | 
| axs_s0_wlast | Output | Indicates whether this is the last data transfer in a write transaction. | 
| axs_s0_wready | Input | Indicates that a transfer on the write data channel can be accepted. | 
| axs_s0_wstrb | Input | Write strobes. Indicates which byte lanes hold valid data. | 
| axs_s0_wvalid | Input | Indicates valid write data channel signals. | 
| Signal Names | Direction | Description | 
|---|---|---|
| CSR Avalon® memory-mapped | ||
| addr | Input | Address | 
| read | Input | Read | 
| write | Input | Write | 
| writedata | Input | Write Data | 
| readdata | Output | Read Data | 
| Signal Names | Direction | Description | 
|---|---|---|
| GPIO Conduit | ||
| gp_output | Input | HPS gp_output | 
| gp_input | Output | HPS gp_input |