Embedded Peripherals IP User Guide

ID 683130
Date 8/11/2025
Public
Document Table of Contents
1. Introduction 2. Avalon® -ST Single-Clock and Dual-Clock FIFO Cores 3. Avalon® -ST Serial Peripheral Interface Core 4. SPI Core 5. SPI Agent/JTAG to Avalon® Host Bridge Cores 6. Intel eSPI Agent Core 7. eSPI to LPC Bridge Core 8. Ethernet MDIO Core 9. Intel FPGA 16550 Compatible UART Core 10. 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. Intel FPGA Avalon® Compact Flash Core 17. EPCS/EPCQA Serial Flash Controller Core 18. Intel FPGA Serial Flash Controller Core 19. Intel FPGA Serial Flash Controller II Core 20. Intel FPGA Generic QUAD SPI Controller Core 21. Intel FPGA Generic QUAD SPI Controller II Core 22. Interval Timer Core 23. Intel FPGA Avalon FIFO Memory Core 24. On-Chip Memory (RAM and ROM) Intel FPGA IP 25. On-Chip Memory II (RAM or ROM) Intel FPGA IP 26. Optrex 16207 LCD Controller Core 27. PIO Core 28. PLL Cores 29. DMA Controller Core 30. Modular Scatter-Gather DMA Core 31. Scatter-Gather DMA Controller Core 32. SDRAM Controller Core 33. Tri-State SDRAM Core 34. Video Sync Generator and Pixel Converter Cores 35. Intel FPGA Interrupt Latency Counter Core 36. Performance Counter Unit Core 37. Vectored Interrupt Controller Core 38. Avalon® -ST Data Pattern Generator and Checker Cores 39. Avalon® -ST Test Pattern Generator and Checker Cores 40. System ID Peripheral Core 41. Avalon® Packets to Transactions Converter Core 42. Avalon® -ST Multiplexer and Demultiplexer Cores 43. Avalon® -ST Bytes to Packets and Packets to Bytes Converter IP 44. Avalon® -ST Delay Core 45. Avalon® -ST Round Robin Scheduler Core 46. Avalon® -ST Splitter Core 47. Avalon® -MM DDR Memory Half Rate Bridge Core 48. Intel FPGA GMII to RGMII Converter Core 49. HPS GMII to RGMII Adapter Intel® FPGA IP 50. Intel FPGA MII to RMII Converter Core 51. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core Intel® FPGA IP 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. Altera ACE5-Lite Cache Coherency Translator 56. Lightweight UART Core

30.4. mSGDMA Descriptors

The descriptor agent port is 128-bits for standard descriptors and 256-bits for extended descriptors. The tables below show acceptable standard and extended descriptor formats.

Table 306.  Standard Descriptor Format
    Byte Lanes
Offset Access 3 2 1 0
0x0 Write Read Address[31:0]
0x4 Write Write Address[31:0]
0x8 Write Length[31:0]
0xC Write Control[31:0]
Table 307.  Extended Descriptor Format
    Byte Lanes
Offset Access 3 2 1 0
0x0 Write Read Address[31:0]
0x4 Write Write Address[31:0]
0x8 Write Length[31:0]
0xC Write Write Burst Count[7:0] Read Burst Count [7:0] Sequence Number[15:0]
0x10 Write Write Stride[15:0] Read Stride[15:0]
0x14 Write Read Address[63:32]
0x18 Write Write Address[63:32]
0x1C Write Control[31:0]

All descriptor fields are aligned on byte boundaries and span multiple bytes when necessary. You can access each byte lane of the descriptor agent port independently of the others, allowing you to populate the descriptor using any access size.

Note: The location of the control field is dependent on the descriptor format you used. The last bit of the control field commits the descriptor to the dispatcher buffer when it is asserted. As a result, the control field is located at the end of a descriptor. This allows you to write the descriptor sequentially to the dispatcher block.