Texas Instruments TMS320C645x manual Read This First, About This Manual

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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 TMS320C645xDSP 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 C6000devices 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.

SPRU724

General-Purpose Input/Output (GPIO)

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Contents Literature Number SPRU724 December Important Notice About This Manual Read This FirstTrademarks Contents Figures Tables This page is intentionally left blank Overview General-PurposeTMS320C645x DSP Block Diagram Gpio Peripheral Block Diagram Gpio Function Interrupt and Event Generation Gpio Interrupt and Edma Event Configuration OptionsEmulation Halt Operation Gpio Registers RegistersInterrupt Per-Bank Enable Register Binten Interrupt Per-Bank Enable Register BintenDirection Register DIR Direction Register DIRDirection Register DIR Field Descriptions Output Data Register Outdata Field Descriptions Output Data Register OutdataSet Data Register Setdata Field Descriptions Set Data Register SetdataClear Data Register Clrdata Clear Data Register ClrdataClear Data Register Clrdata Field Descriptions Input Data Register Indata Field Descriptions Input Data Register IndataSet Rising Edge Interrupt Register Setristrig Set Rising Edge Interrupt Register SetristrigClear Rising Edge Interrupt Register Clrristrig Clear Rising Edge Interrupt Register ClrristrigSet Falling Edge Interrupt Register Setfaltrig Set Falling Edge Interrupt Register SetfaltrigClear Falling Edge Interrupt Register Clrfaltrig Clear Falling Edge Interrupt Register ClrfaltrigThis page is intentionally left blank Index
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