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

24.4.1. Avalon Memory-Mapped Interface Signals

Table 291.  Interface Signals for Avalon® Memory-Mapped Single Port RAM
Signal Names Width (bit) Direction Description
Clock Interface
clk 1 Input Clock for Avalon® Memory-Mapped Agent.
Reset Interface
reset 1 Input Reset for Avalon® Memory-Mapped Agent.
reset_req 1 Input Optional signal to perform clock gating to memory during reset.
Avalon® Memory-Mapped Agent
address 2-26 Input Word addresses derived from log2 (memory size/(data width in byte)).
write 1 Input Asserted to indicate a write transfer.
byteenable 2, 4, 8, 16, 32, 64, 128 Input Enables specific byte lane(s) during transfers on interfaces of width greater than 8 bits. Each bit corresponds to a byte in writedata. readdata would not be affected by byteenable.
writedata 8, 16, 32, 64, 128, 256, 512, 1024 Input Data for write transfer.
read 1 Input Asserted to indicate a read transfer.
readdata 8, 16, 32, 64, 128, 256, 512, 1024 Output Data for read transfer.
Table 292.  Interface Signals for Avalon® Memory-Mapped Simple Dual Port RAM (Port 1 Write, Port 2 Read)
Signal Names Width (bit) Direction Description
Clock Interface
clk 1 Input Clock for Avalon® Memory-Mapped Agent. If dual clock is enabled, this is the clock domain for Avalon® Memory-Mapped Port1 only.
clk2 1 Input Clock for Avalon® Memory-Mapped Agent 2. Only available for dual clock mode. This is the clock domain for Avalon® Memory-Mapped Port2.
Reset Interface
reset 1 Input Reset for Avalon® Memory-Mapped Agent. If dual clock is enabled, this is the reset domain for Avalon® Memory-Mapped Port1 only.
reset2 1 Input Reset for Avalon® Memory-Mapped Agent 2. Only available for dual clock mode. This is the reset domain for Avalon® Memory-Mapped Port2.
reset_req 1 Input Optional signal to perform clock gating to memory during reset.
reset_req2 1 Input Optional signal to perform clock gating to memory during reset.
Avalon® Memory-Mapped Agent (Port1 Write only)
address 2-26 Input Word addresses derived from log2 (memory size/(data width in byte)).
write 1 Input Asserted to indicate a write transfer.
byteenable 2, 4, 8, 16, 32, 64, 128 Input Enables specific byte lane(s) during transfers on interfaces of width greater than 8 bits. Each bit corresponds to a byte in writedata. readdata would not be affected by byteenable.
writedata 8, 16, 32, 64, 128, 256, 512, 1024 Input Data for write transfer.
Avalon® Memory-Mapped Agent (Port2 Read only)
address2 2-26 Input Word addresses derived from log2 (memory size/(data width in byte)).
read2 1 Input Asserted to indicate a read transfer.
readdata2 8, 16, 32, 64, 128, 256, 512, 1024 Output Data for read transfer.
Table 293.  Interface Signals for Avalon® Memory-Mapped True Dual Port RAM
Signal Names Width (bit) Direction Description
Clock Interface
clk 1 Input Clock for Avalon® Memory-Mapped Agent. This is the clock domain for both Avalon® Memory-Mapped ports.
clk2 1 Input Clock for Avalon® Memory-Mapped Agent 2. Only available for dual clock mode. This is the clock domain for Avalon® Memory-Mapped Port2.
Reset Interface
reset 1 Input Reset for Avalon® Memory-Mapped Agent. This is the reset domain for both Avalon® Memory-Mapped ports.
reset2 1 Input Reset for Avalon® Memory-Mapped Agent 2. Only available for dual clock mode. This is the reset domain for Avalon® Memory-Mapped Port2.
reset_req 1 Input Optional signal to perform clock gating to memory during reset.
reset_req2 1 Input Optional signal to perform clock gating to memory during reset.
Avalon® Memory-Mapped Agent (Port 1)
address 2-26 Input Word addresses derived from log2 (memory size/(data width in byte)).
write 1 Input Asserted to indicate a write transfer.
byteenable 2, 4, 8, 16, 32, 64, 128 Input Enables specific byte lane(s) during transfers on interfaces of width greater than 8 bits. Each bit corresponds to a byte in writedata. readdata would not be affected by byteenable.
writedata 8, 16, 32, 64, 128, 256, 512, 1024 Input Data for write transfer.
read 1 Input Asserted to indicate a read transfer.
readdata 8, 16, 32, 64, 128, 256, 512, 1024 Output Data for read transfer.
Avalon® Memory-Mapped Agent (Port 2)
address2 2-26 Input Word addresses derive from log2 (memory size/(data width in byte)).
write2 1 Input Asserted to indicate a write transfer.
byteenable2 2, 4, 8, 16, 32, 64, 128 Input Enables specific byte lane(s) during transfers on interfaces of width greater than 8 bits. Each bit corresponds to a byte in writedata. readdata would not be affected by byteenable.
writedata2 8, 16, 32, 64, 128, 256, 512, 1024 Input Data for write transfer.
read2 1 Input Asserted to indicate a read transfer.
readdata2 8, 16, 32, 64, 128, 256, 512, 1024 Output Data for read transfer.