600 Series Chipset Family Platform Controller Hub

Datasheet, Volume 1 of 2

ID 648364
Date 05/10/2022
Document Table of Contents

ISH I2C Controllers

The ISH supports three I2C controllers capable of operating at speeds up to 2.4 Mbps each. The I2C controllers are completely independent of each other: they do not share any pins, memory spaces, or interrupts.

The ISH’s I2C host controllers share the same general specifications:

  • Master Mode Only (all peripherals must be slave devices)
  • Support for the following operating speeds:
    • Standard mode: 100 kbps
    • Fast Mode: 400 kbps
    • Fast Mode Plus: 1 000 kbps
    • High Speed Mode: 2400 kbps
  • Support for both 7-bit and 10-bit addressing formats on the I2C bus
  • FIFO of 64 bytes with programmable watermarks/thresholds