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

26.1. Core Overview

The PLL cores, Avalon® ALTPLL and PLL, provide a means of accessing the dedicated on-chip PLL circuitry in the Intel Stratix® (except Stratix® V), and Cyclone® series FPGAs. Both cores are a component wrapper around the Intel FPGA ALTPLL IP core.

The PLL core is scheduled for product obsolescence and discontinued support. Therefore, Intel recommends that you use the Avalon® ALTPLL core in your designs.

The core takes an Platform Designer system clock as its input and generates PLL output clocks locked to that reference clock.

The PLL cores support the following features:

  • All PLL features provided by Intel FPGA ALTPLL IP core. The exact feature set depends on the device family.
  • Access to status and control signals via Avalon® Memory-Mapped ( Avalon® -MM) registers or top-level signals on the Platform Designer system module.
  • Dynamic phase reconfiguration in Stratix® III and Stratix® IV device families.

    The PLL output clocks are made available in two ways:

  • As sources to system-wide clocks in your Platform Designer system.
  • As output signals on your Platform Designer system module.

    For details about the ALTPLL IP core, refer to the ALTPLL IP Core User Guide.