Intel® Pentium® Silver and Intel® Celeron® Processors Datasheet, Volume 1


ID 633935
Date 17/06/2021 00:00:00
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Document Table of Contents

General Purpose Input and Output (GPIO)

The PCH General Purpose Input/Output (GPIO) signals are grouped into multiple groups (such as GP_​A, GP_​B, and so on) and are powered by either the PCH Primary well or Deep Sleep well.

The high level features of GPIO:

  • Configurable 3.3 V or 1.8 V voltage (except for GP_​F and GP_​DSW groups)
  • Configurable as an input or output signal.
  • SCI (GPE) and interrupt capable on all GPIOs
  • NMI and SMI capability capable (on selected GPIOs).
  • PWM, Serial Blink capable (on selected GPIOs).
  • Programmable hardware debouncer (on GP_​DSW03/PMC_​PWRBTN_​N pin)




GPI General Purpose Input
GPO General Purpose Output
GP General Purpose I/O in Primary Well
GP_​DSW General Purpose I/O in Deep Sleep Well
in Input to SOC
out Output from SOC
inout Input and Output
od Output open drain
iod Input and output open drain