Embedded Peripherals IP User Guide

ID 683130
Date 8/11/2025
Public
Document Table of Contents
1. Introduction 2. Avalon® -ST Single-Clock and Dual-Clock FIFO Cores 3. Avalon® -ST Serial Peripheral Interface Core 4. SPI Core 5. SPI Agent/JTAG to Avalon® Host Bridge Cores 6. Intel eSPI Agent Core 7. eSPI to LPC Bridge Core 8. Ethernet MDIO Core 9. Intel FPGA 16550 Compatible UART Core 10. 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. Intel FPGA Avalon® Compact Flash Core 17. EPCS/EPCQA Serial Flash Controller Core 18. Intel FPGA Serial Flash Controller Core 19. Intel FPGA Serial Flash Controller II Core 20. Intel FPGA Generic QUAD SPI Controller Core 21. Intel FPGA Generic QUAD SPI Controller II Core 22. Interval Timer Core 23. Intel FPGA Avalon FIFO Memory Core 24. On-Chip Memory (RAM and ROM) Intel FPGA IP 25. On-Chip Memory II (RAM or ROM) Intel FPGA IP 26. Optrex 16207 LCD Controller Core 27. PIO Core 28. PLL Cores 29. DMA Controller Core 30. Modular Scatter-Gather DMA Core 31. Scatter-Gather DMA Controller Core 32. SDRAM Controller Core 33. Tri-State SDRAM Core 34. Video Sync Generator and Pixel Converter Cores 35. Intel FPGA Interrupt Latency Counter Core 36. Performance Counter Unit Core 37. Vectored Interrupt Controller Core 38. Avalon® -ST Data Pattern Generator and Checker Cores 39. Avalon® -ST Test Pattern Generator and Checker Cores 40. System ID Peripheral Core 41. Avalon® Packets to Transactions Converter Core 42. Avalon® -ST Multiplexer and Demultiplexer Cores 43. Avalon® -ST Bytes to Packets and Packets to Bytes Converter IP 44. Avalon® -ST Delay Core 45. Avalon® -ST Round Robin Scheduler Core 46. Avalon® -ST Splitter Core 47. Avalon® -MM DDR Memory Half Rate Bridge Core 48. Intel FPGA GMII to RGMII Converter Core 49. HPS GMII to RGMII Adapter Intel® FPGA IP 50. Intel FPGA MII to RMII Converter Core 51. HPS GMII to TSE 1000BASE-X/SGMII PCS Bridge Core Intel® FPGA IP 52. Intel FPGA HPS EMAC to Multi-rate PHY GMII Adapter Core 53. Intel FPGA MSI to GIC Generator Core 54. Cache Coherency Translator Intel® FPGA IP 55. Altera ACE5-Lite Cache Coherency Translator 56. Lightweight UART Core

6.1.3.1. Peripheral Channel

The peripheral channel allows you to communicate between the eSPI host and the eSPI endpoints located at the agent side (example: PORT80). To reset the channel, use the platform reset (PLTRST_n VW).

You can enable the peripheral I/O access and configure the port width and direction using the Platform Designer. The eSPI agent core allocates address range from 00h to A0h to access the peripheral I/O. See Table: Peripheral I/O Port Configuration for more details. By default, the pc_port80 has an 8-bit data width. Each address location can be configured as 8-bit wide, 16-bit wide or 32-bit wide.

Setting an I/O port to 8-bit wide requires that you access the port using PUT_IORD_SHORT 1 byte/PUT_IOWR_SHORT 1 byte command. Setting an I/O port to 16-bit wide requires that you access the port using PUT_IORD_SHORT 2 byte/PUT_IOWR_SHORT 2 byte command. Setting an I/O port to 32-bit wide requires that you access the port using PUT_IORD_SHORT 4 byte/PUT_IOWR_SHORT 4 byte command.

PUT_PC or PUT_NP loads packets into the FIFO while GET_PC or GET_NP flushes out packets from the FIFO. Decoder decodes address bytes from the header and sends data out to the corresponding output port.
Table 17.  Peripheral I/O Port Configuration
Address Data Width Port Name Port Direction Enable
00h 8/16/32 pc_port00 Input/Output Yes/No
10h 8/16/32 pc_port10 Input/Output Yes/No
20h 8/16/32 pc_port20 Input/Output Yes/No
30h 8/16/32 pc_port30 Input/Output Yes/No
40h 8/16/32 pc_port40 Input/Output Yes/No
50h 8/16/32 pc_port50 Input/Output Yes/No
60h 8/16/32 pc_port60 Input/Output Yes/No
70h 8/16/32 pc_port70 Input/Output Yes/No
80h 8/16/32 pc_port80 Input/Output Yes/No
90h 8/16/32 pc_port90 Input/Output Yes/No
A0h 8/16/32 pc_portA0 Input/Output Yes/No