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

24.3.1.4. Size

These options define the size and width of the memory.
  • Enable different width for Dual-port Access—Different width for dual-port access status.
  • Agent S1/S2 data width—This setting determines the data width of the memory. The available choices are 8, 16, 32, 64, 128, 256, 512, or 1024 bits. Assign Data width to match the width of the host that frequently accesses this memory or has the most critical throughput requirements. For example, if you are connecting the on-chip memory II to the data host of a Nios® V processor, you should set the data width of the On-Chip Memory II to 32 bits, the same as the data-width of the Nios® V data host. Otherwise, the access latency could be longer than one cycle because the Avalon® interconnect fabric performs width translation.
  • Total memory size—This setting determines the total size of the On-Chip Memory II block. The total memory size must be less than the available memory in the target FPGA.
Table 282.  Supported Mixed Port Width Ratio Configuration
Device Family Simple Dual-Port True Dual-Port
Without Byte Enable (When S1/S2 data width = 8 bit) With Byte Enable Without Byte Enable (When S1/S2 data width = 8 bit) With Byte Enable
Arria® 10/ Cyclone® 10 GX 1, 2, 4, 8, 16, 32 1, 2, 4 1 1, 2
Stratix® 10/ Agilex™ 7/ Agilex™ 5/ Agilex™ 3/ Agilex™ 9 1, 2, 4, 8, 16, 32
Note: 8, 16, and 32 are emulated.
1, 2, 4 1 1
Note: Mixed port width is supported in AUTO and M20K memory type only.