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

28.4.2. Responder Descriptor Format

The following tables show the standard and extended responder descriptor formats fields which are written back by Prefetcher to the host memory for the respective DMA configurations.

Memory-Mapped to Memory-Mapped Configuration

Table 330.  Standard Responder Descriptor Format for Memory-Mapped to Memory-Mapped Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x0 43 Read Address [31-0]
0x443 Write Address [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Set to 0
0x14 Reserved [15-0] 44/43 Set to 0
0x1843 Reserved [31-0]
0x1C Control [31-0]
Table 331.  Extended Responder Descriptor Format for Memory-Mapped to Memory-Mapped Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x043 Read Address [31-0]
0x443 Write Address [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Set to 0
0x14 Reserved [15-0]44/43 Set to 0
0x1843 Reserved [31-0]
0x1C43 Write Burst Count [7-0] Read Burst Count [7-0] Sequence Number [15-0]
0x2043 Write Stride [15-0] Read Stride [15-0]
0x2443 Read Address [63-32]
0x2843 Write Address [63-32]
0x2C43 Next Desc Ptr [63-32]
0x30 Reserved [31-0] 45/Sideband signal (e.g. timestamp) [31-0] 46
0x34 Reserved [31-0]45/Sideband signal (e.g. timestamp) [63-32]46
0x38 Reserved [31-0]45/Sideband signal (e.g. timestamp) [95-64]46
0x3C Control [31-0]

Memory-Mapped to Streaming Configuration

Table 332.  Standard Responder Descriptor Format for Memory-Mapped to Streaming Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x043 Read Address [31-0]
0x443 Reserved [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Set to 0
0x14 Reserved [15-0]44/43 Set to 0
0x1843 Reserved [31-0]
0x1C Control [31-0]
Table 333.  Extended Responder Descriptor Format for Memory-Mapped to Streaming Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x043 Read Address [31-0]
0x443 Reserved [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Set to 0
0x14 Reserved [15-0]44/43 Set to 0
0x1843 Reserved [31-0]
0x1C43 Reserved [7-0] Read Burst Count [7-0] Sequence Number [15-0]
0x2043 Reserved [15-0] Read Stride [15-0]
0x2443 Read Address [63-32]
0x2843 Reserved [31-0]
0x2C43 Next Desc Ptr [63-32]
0x30 Reserved [31-0]45/Sideband signal (e.g. timestamp) [31-0]46
0x34 Reserved [31-0]45/Sideband signal (e.g. timestamp) [63-32]46
0x38 Reserved [31-0]45/Sideband signal (e.g. timestamp) [95-64]46
0x3C Control [31-0]

Streaming to Memory-Mapped Configuration

Table 334.  Standard Responder Descriptor Format for Streaming to Memory-Mapped Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x043 Reserved [31-0]
0x443 Write Address [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Actual Bytes Transferred [31-0]
0x14 Reserved [15-0]44/43 Status [15-0]
0x1843 Reserved [31-0]
0x1C Control [31-0]
Table 335.  Extended Responder Descriptor Format for Streaming to Memory-Mapped Configuration when Prefetcher is Enabled
Byte Lanes
Offset 3 2 1 0
0x043 Reserved [31-0]
0x443 Write Address [31-0]
0x843 Length [31-0]
0xC43 Next Desc Ptr [31-0]
0x10 Actual Bytes Transferred [31-0]
0x14 Reserved [15-0]44/43 Status [15-0]
0x1843 Reserved [31-0]
0x1C43 Write Burst Count [7-0] Reserved [7-0] Sequence Number [15-0]
0x2043 Write Stride [15-0] Reserved [15-0]
0x2443 Reserved [31-0]
0x2843 Write Address [63-32]
0x2C43 Next Desc Ptr [63-32]
0x30 Reserved [31-0]45/Sideband signal (e.g. timestamp) [31-0]46
0x34 Reserved [31-0]45/Sideband signal (e.g. timestamp) [63-32]46
0x38 Reserved [31-0]45/Sideband signal (e.g. timestamp) [95-64]46
0x3C Control [31-0]
43 Note: Prefetcher does not write back to the descriptor.
44 Prefetcher does not write back to byte 2 and 3 of address offset 0x14.
45 If Expose response port to enable sideband support parameter is disabled, address offset 0x30, 0x34 and 0x38 of the Prefetcher’s extended responder descriptor format are reserved fields. Prefetcher does not perform write back to these 3 offset fields.
46 Applicable only when Expose response port to enable sideband support parameter is enabled.