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

29.4. Parameters

Table 463.  Configurable Parameters
Parameter Legal Values Description
Transfer mode Memory To Memory
Memory To Stream
Stream To Memory Configuration to use. For more information about these configurations, see the Memory-to-Memory Configuration section.
Enable bursting on descriptor read host On/Off If this option is on, the descriptor processor block uses Avalon® -MM bursting when fetching descriptors and writing them back in memory. With 32-bit read and write ports, the descriptor processor block can fetch the 256-bit descriptor by performing 8-word burst as opposed to eight individual single-word transactions.
Allow unaligned transfers On/Off If this option is on, the core allows accesses to non-word-aligned addresses. This option doesn’t apply for burst transfers.

Unaligned transfers require extra logic that may negatively impact system performance.

Enable burst transfers On/Off Turning on this option enables burst reads and writes.
Read burstcount signal width 1–16 The width of the read burstcount signal. This value determines the maximum burst read size.
Write burstcount signal width 1–16 The width of the write burstcount signal. This value determines the maximum burst write size.
Data width 8, 16, 32, 64 The data width in bits for the Avalon® -MM read and write ports.
Source error width 0–7 The width of the error signal for the Avalon® -ST source port.
Sink error width 0 – 7 The width of the error signal for the Avalon® -ST sink port.
Data transfer FIFO depth 2, 4, 8, 16, 32, 64 The depth of the internal data FIFO in memory-to-memory configurations with burst transfers disabled.

The SG-DMA controller core should be given a higher priority (lower IRQ value) than most of the components in a system to ensure high throughput.