- TMS320C645x General-Purpose Input/Output SPRU724 User's Guide

3General-Purpose Input/Output (GPIO)SPRU724
Preface
Read This First
About This Manual
This document describes the general-purpose input/output (GPIO) peripheral
in the digital signal processors (DSPs) of the TMS320C645x™ DSP family.
Notational Conventions
This document uses the following conventions.
- Hexadecimal numbers are shown with the suffix h. For example, the
following number is 40 hexadecimal (decimal 64): 40h.
- When referencing specific register bits, the X in the register bit name is
replaced with the bit number; for example, GPXDIR refers to the bit field
of the GPIO direction register and GP15DIR refers to bit 15 of GPDIR.
- Registers in this document are shown in figures and described in tables.
J Each register figure shows a rectangle divided into fields that represent
the fields of the register. Each field is labeled with its bit name, its
beginning and ending bit numbers above, and its read/write properties
below. A legend explains the notation used for the properties.
J Reserved bits in a register figure designate a bit that is used for future
device expansion.
Related Documentation From Texas Instruments
The following documents describe the C6000™ devices and related support
tools. Copies of these documents are available on the Internet at www.ti.com.
Tip: Enter the literature number in the search box provided at www.ti.com.
TMS320C6000 CPU and Instruction Set Reference Guide (literature
number SPRU189) gives an introduction to the TMS320C62xt and
TMS320C67xt DSPs, development tools, and third-party support.
TMS320C6455 Technical Reference (literature number SPRU965) gives an
introduction to the TMS320C6455t DSP and discusses the application
areas that are enhanced.