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

28.16.3.2. Data Source Interface (data_source)

The data source interface is responsible for sending data to the write host or any component that contains a streaming sink interface. This interface is in big endian mode (first-order symbol is in the most significant bits of the data interface). The interface includes support for packets, channels, and errors. Refer to Parameters to learn more about the configuration options.

Table 453.  Data Source Interface
Signal Name Direction Type Description
src_ready Input Avalon® Streaming Source Indicates that the sink can accept data when ready is asserted high.
src_valid Output Indicates that the data from the Read Master IP is valid.
src_data [DATA_WIDTH-1:0] Output Indicates the DMA data transfer from Read Master IP to the user’s Avalon® -ST sink interface.
src_empty [log2(DATA_WIDTH/8)-1:0] Output

Indicates the number of symbols (8 data bits per symbol) that are empty, i.e. invalid data.

Invalid data or empty cycle is only permitted at the end of the packet transfer.

Note: Applicable only when parameter Packet Support Enable is enabled and DATA_WIDTH is larger than 8.
src_sop Output

Indicates the start of packet.

Note: Applicable only when parameter Packet Support Enable is enabled.
src_eop Output

Indicates the end of packet.

Note: Applicable only when parameter Packet Support Enable is enabled.
src_channel [CHANNEL_WIDTH-1:0] Output

Indicate the channel number to which the data belongs.

Note: Applicable only when parameter Channel Enable is enabled.
src_error [ERROR_WIDTH-1:0] Output

Indicates error signal from source.

Note: Applicable only when parameter Error Enable is enabled.