Intel® MAX® 10 Clocking and PLL User Guide

ID 683047
Date 12/26/2023
Document Table of Contents


The ALTCLKCTRL Intel® FPGA IP is a clock control function for configuring the clock control block.

The common applications of the ALTCLKCTRL Intel® FPGA IP are as follows:

  • Dynamic clock source selection—When using the clock control block, you can select the dynamic clock source that drives the global clock network.
  • Dynamic power-down of a clock network—The dynamic clock enable or disable feature allows internal logic to power down the clock network. When a clock network is powered down, all the logic fed by that clock network is not toggling, thus reducing the overall power consumption of the device.

The ALTCLKCTRL Intel® FPGA IP provides the following features:

  • Supports clock control block operation mode specifications
  • Supports specification of the number of input clock sources
  • Provides an active high clock enable control input