This document describes the specifications for the General Purpose Input/Output (GPIO) core for the Processor Local Bus (PLB). The XPS GPIO is a 32-bit peripheral that attaches to the PLB.
Key Features and Benefits
PLB interface is based on PLB v4.6 specification
Configurable as single or dual GPIO channel(s)
Number of GPIO bits configurable from 1 to 32 bits
Each GPIO bit can be dynamically programmed as input or output
Can be configured as inputs-only on a per channel basis to reduce resource utilization
Ports for both 3-state and non 3-state connections