User's Manual

Preface
SPRUGK1 – March 2009
Read This First
About This Manual
Channel decoding of high bit-rate data channels found in third-generation (3G) cellular standards requires
decoding of turbo-encoded data. The turbo-decoder coprocessor (TCP2) in some of the digital signal
processors (DSPs) of the TMS320C6000™ DSP family has been designed to perform this operation for
IS2000 and 3GPP wireless standards. This document describes the operation and programming of the
TCP2 for the TMS320C6457 DSPs.
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.
• Registers in this document are shown in figures and described in tables.
– 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.
– Reserved bits in a register figure designate a bit that is used for future device expansion.
• The term "word" describes a 32-bit value. The term "halfword" describes a 16-bit value.
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 .
SPRU189 — TMS320C6000 DSP CPU and Instruction Set Reference Guide. Describes the CPU
architecture, pipeline, instruction set, and interrupts for the TMS320C6000 digital signal processors
(DSPs).
SPRU198 — TMS320C6000 Programmer's Guide. Describes ways to optimize C and assembly code for
the TMS320C6000™ DSPs and includes application program examples.
SPRU301 — TMS320C6000 Code Composer Studio Tutorial. Introduces the Code Composer Studio™
integrated development environment and software tools.
SPRU321 — Code Composer Studio Application Programming Interface Reference Guide.
Describes the Code Composer Studio™ application programming interface (API), which allows you
to program custom plug-ins for Code Composer.
SPRU871 — TMS320C64x+ Megamodule Reference Guide. Describes the TMS320C64x+ digital signal
processor (DSP) megamodule. Included is a discussion on the internal direct memory access
(IDMA) controller, the interrupt controller, the power-down controller, memory protection, bandwidth
management, and the memory and cache.
Trademarks
TMS320C6000, C6000, Code Composer Studio are trademarks of Texas Instruments.
All other trademarks are the property of their respective owners.
8 Preface SPRUGK1 – March 2009
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