Intel E3815 FH8065301567411 Data Sheet

Intel

®

 Atom™ Processor E3800 Product Family

4574

Datasheet

a GPIO

The Pad Value register has the following functions:
- Reads the GPIO value, when configured as a GPI
- Writes the GPIO value, when configured as a GPO
- Enables/disables input and output capabilities

Note: The Pad Value register is only valid when the pin is configured as a GPIO in the Pad 
Configuration register.

Additionally, there are a number of general configuration registers that control groups of 
GPIOs or report their status. These include:

- IRQ Status (IRQ_TS)
- Direct IRQ Multiplexer (DIRECT_IRQ)

The IRQ Status register indicates if an IRQ assoicated with a GPIO has been triggered.

The Direct IRQ Multiplexer register allows for a selection of GPIOs to be assigned a 

dedicated APIC interrupt.