Texas Instruments TMS320C645X - Manual (Page 3)

3 General-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 TMS320C62x t and
TMS320C67x
t
DSPs, development tools, and third-party support.
TMS320C6455 Technical Reference (literature number SPRU965) gives an
introduction to the TMS320C6455
t
DSP and discusses the application
areas that are enhanced.