Embedded Peripherals IP User Guide

ID 683130
Date 2/09/2023
Public

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Document Table of Contents
1. Introduction 2. Avalon® -ST Multi-Channel Shared Memory FIFO Core 3. Avalon® -ST Single-Clock and Dual-Clock FIFO Cores 4. Avalon® -ST Serial Peripheral Interface Core 5. SPI Core 6. SPI Agent/JTAG to Avalon® Host Bridge Cores 7. Intel eSPI Agent Core 8. eSPI to LPC Bridge Core 9. Ethernet MDIO Core 10. Intel FPGA 16550 Compatible UART Core 11. UART Core 12. JTAG UART Core 13. Intel FPGA Avalon® Mailbox Core 14. Intel FPGA Avalon® Mutex Core 15. Intel FPGA Avalon® I2C (Host) Core 16. Intel FPGA I2C Agent to Avalon® -MM Host Bridge Core 17. Intel FPGA Avalon® Compact Flash Core 18. EPCS/EPCQA Serial Flash Controller Core 19. Intel FPGA Serial Flash Controller Core 20. Intel FPGA Serial Flash Controller II Core 21. Intel FPGA Generic QUAD SPI Controller Core 22. Intel FPGA Generic QUAD SPI Controller II Core 23. Interval Timer Core 24. Intel FPGA Avalon FIFO Memory Core 25. On-Chip Memory (RAM and ROM) Intel FPGA IP 26. On-Chip Memory II (RAM or ROM) Intel FPGA IP 27. Optrex 16207 LCD Controller Core 28. PIO Core 29. PLL Cores 30. DMA Controller Core 31. Modular Scatter-Gather DMA Core 32. Scatter-Gather DMA Controller Core 33. SDRAM Controller Core 34. Tri-State SDRAM Core 35. Video Sync Generator and Pixel Converter Cores 36. Intel FPGA Interrupt Latency Counter Core 37. Performance Counter Unit Core 38. Vectored Interrupt Controller Core 39. Avalon® -ST Data Pattern Generator and Checker Cores 40. Avalon® -ST Test Pattern Generator and Checker Cores 41. System ID Peripheral Core 42. Avalon® Packets to Transactions Converter Core 43. Avalon® -ST Multiplexer and Demultiplexer Cores 44. Avalon® -ST Bytes to Packets and Packets to Bytes Converter Cores 45. Avalon® -ST Delay Core 46. Avalon® -ST Round Robin Scheduler Core 47. Avalon® -ST Splitter Core 48. Avalon® -MM DDR Memory Half Rate Bridge Core 49. Intel FPGA GMII to RGMII Converter Core 50. Intel FPGA MII to RMII Converter Core 51. Intel FPGA HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core 52. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core 53. Intel FPGA MSI to GIC Generator Core 54. Cache Coherency Translator Intel® FPGA IP 55. Lightweight UART Core

31.7.1.3.1. Descriptor Fields Definition

Next Descriptor Pointer

The next descriptor pointer field specifies the address of the next descriptor in the linked list.

Actual Bytes Transferred

Specifies the actual number of bytes that has been transferred. This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer.

Table 317.  Status
Bits Fields Description
15:9 Reserved Reserved fields
8 Early Termination

Indicates early termination condition where write host is performing a packet transfer and does not receive EOP before pre-determined amount of bytes are transferred. This status bit is similar to status register bit 8 of the dispatcher core. For more details refer to dispatcher core CSR definition.

This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer.

7:0 Error

Indicates an error has arrived at the write host streaming sink port.

This field is not applicable if Modular SGDMA is configured as Memory-Mapped to Streaming transfer.

Table 318.  Control
Bits Fields Description
30 Owned by Hardware

This field determines whether hardware or software has write access to the current descriptor.

When this field is set to 1, the Modular SGDMA can update the descriptor and software should not access the descriptor due to the possibility of race conditions. Otherwise, it is safe for software to update the descriptor.

For bit 31 and 29:0, refer to descriptor control field bit 31 and 29:0 defined in dispatcher core. Table 310