Texas Instruments TMS320C645X - Manual (Page 9)

9 General-Purpose Input/Output (GPIO) SPRU724
General-Purpose Input/Output (GPIO)
This document describes the general-purpose input/output (GPIO) peripheral
in the digital signal processors (DSPs) of the TMS320C645x
™ DSP family.
1 Overview
The general-purpose input/output (GPIO) peripheral provides dedicated
general-purpose pins that can be configured as either inputs or outputs. When
configured as an output, you can write to an internal register to control the state
driven on the output pin. When configured as an input, you can detect the state
of the input by reading the state of an internal register.
In addition, the GPIO peripheral can produce CPU interrupts and EDMA
synchronization events in different interrupt/event generation modes.
Figure 1 shows the GPIO peripheral in the TMS320C645x ™ DSP. Figure 2
shows the GPIO peripheral block diagram.