Embedded Peripherals IP User Guide

ID 683130
Date 10/24/2025
Public
Document Table of Contents
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

17.1.4. Interface Signals

Table 173.  Interface Signals
Signal Width Direction Description
Clock
clk 1 Input 25MHz maximum input clock.
Reset
reset_n 1 Input Asynchronous reset used to reset Quad SPI Controller
Avalon® -MM Agent Interface for CSR (avl_csr)
avl_csr_addr 3 Input Avalon® -MM address bus. The address bus is in word addressing.
avl_csr_read 1 Input Avalon® -MM read control to csr
avl_csr_write 1 Input Avalon® -MM write control to csr
avl_csr_waitrequest 1 Output Avalon® -MM waitrequest control from csr
avl_csr_wrdata 32 Input Avalon® -MM write data bus to csr
avl_csr_rddata 32 Output Avalon® -MM read data bus from csr
avl_csr_rddata_valid 1 Output Avalon® -MM read data valid which indicates that csr read data is available
Interrupt Signals
irq 1 Output Interrupt signal to determine if there is an illegal write or illegal erase
Avalon® -MM Agent Interface for Memory Access (avl_ mem)
avl_mem_addr * Input

Avalon® -MM address bus. The address bus is in word addressing. The width of the address will depends on the flash memory density minus 2.

If you are using Arria® 10, then the MSB bits will be used for chip select information. User is allowed to select the number of chip select needed in the GUI.

If user selects 1 chip select, there will be no extra bit added to avl_mem_addr.

If user select 2 chip selects, there will be one extra bit added to avl_mem_addr.

Chip 1 – b’0

Chip 2 – b’1

If user select 3 chip selects, there will be two extra bit added to avl_mem_addr.

Chip 1 – b’00

Chip 2 – b’01

Chip 3 – b’10

avl_mem_read 1 Input Avalon® -MM read control to memory
avl_mem_write 1 Input Avalon® -MM write control to memory
avl_mem_wrdata 32 Input Avalon® -MM write data bus to memory
avl_mem_byteenble 4 Input Avalon® -MM write data enable bit to memory. During bursting mode, byteenable bus bit will be all high always, 4’b1111.
avl_mem_burstcount 7 Input Avalon® -MM burst count for memory. Value range from 1 to 64
avl_mem_waitrequest 1 Output Avalon® -MM waitrequest control from memory
avl_mem_rddata 32 Output Avalon® -MM read data bus from memory
avl_mem_rddata_valid 1 Output Avalon® -MM read data valid which indicates that memory read data is available
Conduit Interface
flash_dataout 4 Input/Output Input/output port to feed data from flash device
flash_dclk_out 1 Output Provides clock signal to the flash device
flash_ncs 1/3 Output Provides the ncs signal to the flash device
The Intel FPGA Serial Flash Controller supports FMAX at 25 MHz.
Note: When using the Intel FPGA Serial Flash Controller Core with an external EPCQ flash, the interface mapping for control signal is not required.