Intel® 500 Series Chipset Family On-Package PCH Datasheet Volume 1

Datasheet

ID 631119
Date 13/07/2021 00:00:00
Public Content
Document Table of Contents

General Purpose Input and Output

The PCH General Purpose Input / Output (GPIO) signals are grouped into multiple groups (such as GPP_​A, GPP_​B, and so on). All GPIO groups are powered by the PCH Primary well, except for GPD group which is powered by the PCH Deep Sleep well.

The high level features of GPIO:

  • Per-pad configurable 3.3 V or 1.8 V voltage, except for GPD groups (3.3 V only), GPP_​S (1.8 V only), and GPP_​R (per-group 3.3 V or 1.8 V)
  • Configurable as an GPIO input, GPIO output, or native function signal.
  • Configurable GPIO pad ownership by host, Intel® CSME, or ISH.
  • SCI (GPE) and IOAPIC interrupt capable on all GPIOs
  • NMI and SMI capability capable (on selected GPIOs).
  • PWM, Serial Blink capable (on selected GPIOs).
  • Programmable hardware debouncer (on GPD3 / PWRBTN# pin)

Acronyms

Acronyms

Description

GPI

General Purpose Input

GPO

General Purpose Output

GPP

General Purpose I/O in Primary Well

GPD

General Purpose I/O in Deep Sleep Well