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

28.5.2. Source and Destination Data Path Interface

The following topics describe the interfaces which are involved in the data transfers between two memory spaces. The read host block reads data through its Avalon® -MM host interface, and channels it into the Avalon® -ST source interface, based on instruction given by the dispatcher block. Conversely, the write host block receives data from its Avalon® -ST sink interface and writes it to the destination address via its Avalon® -MM host interface.

Avalon® -MM Read Host Interface (mm_read)

This interface is where data is read from the source address. Avalon® -MM Read Host Interface is not applicable for Streaming to Memory-Mapped Configuration.

Table 338.   Avalon® -MM Read Host Interface
Signal Name Direction Type Description

mm_read_address

[FIX_ADDRESS_WIDTH-1:0]

Output Avalon® Memory-Mapped Host

Indicates read address of the data source.

Note: The address width is configurable based on parameter FIX_ADDRESS_WIDTH only when parameter USE_FIX_ADDRESS_WIDTH is enabled. If USE_FIX_ADDRESS_WIDTH = 0, the address width is automatically fixed to 32-bit width.
mm_read_read Output Read request to the source address.

mm_read_byteenable

[DATA_WIDTH/8-1:0]

Output

Enable the byte lanes during read transfer from the data source.

Note: byteenable for the read transfer are always asserted by the read host.
Note: Applicable for DATA_WIDTH is larger than 8.

mm_read_burstcount

[log2(MAX_BURST_COUNT):0]

Output

Indicate the number of read transfers in each burst.

Note: Applicable only when parameter Burst Enable is enabled.

mm_read_readdata

[DATA_WIDTH-1:0]

Input Data in response to the read transfer from the source.
mm_read_readdatavalid Input When asserted, indicates that the readdata signal contains valid data.
mm_read_waitrequest Input An agent asserts waitrequest when unable to respond to the read request.

Avalon® -MM Write Host Interface (mm_write)

This interface is where data is written to the destination address. Avalon® -MM Write Host Interface is not applicable for Memory-Mapped to Streaming Configuration.

Table 339.   Avalon® -MM Write Host Interface
Signal Name Direction Type Description

mm_write_address

[FIX_ADDRESS_WIDTH-1:0]

Output Avalon® Memory-Mapped Host

Indicates write address of the destination.

Note: The address width is configurable based on parameter FIX_ADDRESS_WIDTH only when parameter USE_FIX_ADDRESS_WIDTH is enabled. If USE_FIX_ADDRESS_WIDTH = 0, the address width is automatically fixed to 32-bit width.
mm_write_write Output Write request to the destination address.

mm_write_byteenable

[DATA_WIDTH/8-1:0]

Output

Enable the byte lanes during write transfer to the destination address.

Note: Applicable for DATA_WIDTH is larger than 8.

mm_write_burstcount

[log2(MAX_BURST_COUNT):0]

Output

Indicate the number of write transfers in each burst.

Note: Applicable only when parameter Burst Enable is enabled.

mm_write_writedata

[DATA_WIDTH-1:0]

Output Data for the write transfer to the destination.

mm_write_response

[1:0]

Input

Response status for the write transaction to the destination.

Note: Applicable only when parameter Enable Write Response is enabled.
mm_write_writeresponsevalid Input

When asserted, the value on the response signal is a valid writeresponse.

Note: Applicable only when parameter Enable Write Response is enabled.
mm_write_waitrequest Input An agent asserts waitrequest when unable to respond to the write request.

Avalon® -ST Data Source Interface (st_source)

This interface is where streaming data is transmitted out from mSGDMA IP. This interface is in big endian mode (first-order symbol is in the most significant bits of the data interface). Avalon® -ST Data Source Interface is not applicable for Streaming to Memory-Mapped Configuration.

Table 340.   Avalon® -ST Data Source Interface
Signal Name Direction Type Description
st_source_ready Input Avalon® Streaming Source Indicates that the sink can accept data when ready is asserted high.
st_source_valid Output Indicates that the data from the source is valid.

st_source_data

[DATA_WIDTH-1:0]

Output Indicates the DMA data transfer from host to the user’s Avalon® -ST sink interface.

st_source_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 thepacket transfer.

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

Indicates the start of packet.

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

Indicates the end of packet.

Note: Applicable only when parameter Packet Support Enable is enabled

st_source_channel

[CHANNEL_WIDTH-1:0]

Output

Indicate the channel number to which the data belongs.

Note: Applicable only when parameter Channel Enable is enabled

st_source_error

[ERROR_WIDTH-1:0]

Output

Indicates error signal from source.

Note: Applicable only when parameter Error Enable is enabled

Avalon® -ST Data Sink Interface (st_sink)

This interface is where mSGDMA IP received streaming data. This interface is in big endian mode (first-order symbol is in the most significant bits of the data interface). Avalon® -ST Data Sink Interface is not applicable for Memory-Mapped to Streaming Configuration.
Table 341.   Avalon® -ST Data Sink Interface
Signal Name Direction Type Description
st_sink_ready Output Avalon® Streaming Sink Indicates that the mSGDMA IP can accept data from the source when ready is asserted high.
st_sink_valid Input Indicates that the data from the source is valid.

st_sink_data

[DATA_WIDTH-1:0]

Input Indicates the DMA data transfer from user’s Avalon® -ST streaming source to the host.

st_sink_empty

[log2(DATA_WIDTH/8)-1:0]

Input

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.
st_sink_startofpacket Input

Indicates the start of packet.

Note: Applicable only when parameter Packet Support Enable is enabled
st_sink_endofpacket Input

Indicates the end of packet.

Note: Applicable only when parameter Packet Support Enable is enabled

st_sink_error

[ERROR_WIDTH-1:0]

Input

Indicates error signal from source.

Note: Applicable only when parameter Error Enable is enabled