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

22.3.2. Interface Parameters

The following sections outline the options for the input and output interfaces.

Input

Available input interfaces are Avalon® Memory-Mapped Interface write agent and Avalon® Streaming Interface sink.

Output

Available output interfaces are Avalon® Memory-Mapped Interface read agent and Avalon® Streaming Interface source.

Allow Backpressure

When Allow backpressure is on, an Avalon® Memory-Mapped Interface includes the waitrequest signal which is asserted to prevent a host from writing to a full FIFO buffer or reading from an empty FIFO buffer. An Avalon® Streaming Interface includes the ready and valid signals to prevent underflow and overflow conditions.

Avalon® Memory-Mapped Interface Port Settings

Valid Data widths are 8, 16, and 32 bits.

If Avalon® Memory-Mapped Interface is selected for one interface and Avalon® Streaming Interface for the other, the data width is fixed at 32 bits.

The Avalon® Memory-Mapped Interface accesses data 4 bytes at a time. For data widths other than 32 bits, be careful of potential overflow and underflow conditions.

Avalon® Streaming Interface Port Settings

The following parameters allow you to specify the size and error handling of the Avalon® Streaming Interface port or ports:

  • Bits per symbol
  • Symbols per beat
  • Channel width
  • Error width

    If the symbol size is not a power of two, it is rounded up to the next power of two. For example, if the bits per symbol is 10, the symbol will be mapped to a 16-bit memory location. With 10-bit symbols, the maximum number of symbols per beat is two.

    Enable packet data provides an option for packet transmission.