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

29.7.2. SG-DMA API

Table 473.  Function List
Name Description
alt_avalon_sgdma_do_async_transfer() Starts a non-blocking transfer of a descriptor chain.
alt_avalon_sgdma_do_sync_transfer() Starts a blocking transfer of a descriptor chain. This function blocks both before transfer if the controller is busy and until the requested transfer has completed.
alt_avalon_sgdma_construct_mem_to__mem_desc() Constructs a single SG-DMA descriptor in the specified memory for an Avalon® -MM to Avalon® -MM transfer.
alt_avalon_sgdma_construct_stream_to_mem_desc() Constructs a single SG-DMA descriptor in the specified memory for an Avalon® -ST to Avalon® -MM transfer. The function automatically terminates the descriptor chain with a NULL descriptor.
alt_avalon_sgdma_construct_mem_to_stream_desc() Constructs a single SG-DMA descriptor in the specified memory for an Avalon® -MM to Avalon® -ST transfer.
alt_avalon_sgdma_enable_desc_poll() Enables descriptor polling mode. To use this feature, you need to make sure that the hardware supports polling.
alt_avalon_sgdma_disable_desc_poll() Disables descriptor polling mode.
alt_avalon_sgdma_check_descriptor_status() Reads the status of a given descriptor.
alt_avalon_sgdma_register_callback() Associates a user-specific callback routine with the SG-DMA interrupt handler.
alt_avalon_sgdma_start() Starts the DMA engine. This is not required when alt_avalon_sgdma_do_async_transfer()and alt_avalon_sgdma_do_sync_transfer() are used.
alt_avalon_sgdma_stop() Stops the DMA engine. This is not required when alt_avalon_sgdma_do_async_transfer()and alt_avalon_sgdma_do_sync_transfer() are used.
alt_avalon_sgdma_open() Returns a pointer to the SG-DMA controller with the given name.