TMS320C31, TMS320LC31

DIGITAL SIGNAL PROCESSORS

SPRS035B – MARCH 1996 – REVISED JANUARY 1999

1

POST OFFICE BOX 1443

Signal Processor (DSP):

– TMS320C31-80 (5 V)

25-ns Instruction Cycle Time

440 MOPS, 80 MFLOPS, 40 MIPS

– TMS320C31-60 (5 V)

33-ns Instruction Cycle Time

330 MOPS, 60 MFLOPS, 30 MIPS

– TMS320C31-50 (5 V)

40-ns Instruction Cycle Time

275 MOPS, 50 MFLOPS, 25 MIPS

– TMS320C31-40 (5 V)

50-ns Instruction Cycle Time

220 MOPS, 40 MFLOPS, 20 MIPS

– TMS320LC31-40 (3.3 V)

50-ns Instruction Cycle Time

220 MOPS, 40 MFLOPS, 20 MIPS

– TMS320LC31-33 (3.3 V)

60-ns Instruction Cycle Time

183.7 MOPS, 33.3 MFLOPS, 16.7 MIPS

Floating-Point Operations

On-Chip RAM Blocks

– One Serial Port

– Two 32-Bit Timers

– One-Channel Direct Memory Access

(DMA) Coprocessor for Concurrent I/O

and CPU Operation

Performance Implanted CMOS (EPIC

™)

Technology by Texas Instruments (TI

™)

( PQ Suffix )

Auxiliary Registers and Two Auxiliary

Register Arithmetic Units (ARAUs)

Multiplier Execution in a Single Cycle

Branches

Multiprocessing Support

Strobe-Control Wait-State Generation

description

The TMS320C31 and TMS320LC31 DSPs are 32-bit, floating-point processors manufactured in 0.6

µm

triple-level-metal CMOS technology. The TMS320C31 and TMS320LC31 are part of the TMS320C3x

generation of DSPs from Texas Instruments.

The TMS320C3x’s internal busing and special digital-signal-processing instruction set have the speed and

flexibility to execute up to 80 million floating-point operations per second (MFLOPS). The TMS320C3x

optimizes speed by implementing functions in hardware that other processors implement through software or

microcode. This hardware-intensive approach provides performance previously unavailable on a single chip.

The TMS320C3x can perform parallel multiply and ALU operations on integer or floating-point data in a single

cycle. Each processor also possesses a general-purpose register file, a program cache, dedicated ARAUs,

internal dual-access memories, one DMA channel supporting concurrent I / O, and a short machine-cycle time.

High performance and ease of use are results of these features.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

EPIC and TI are trademarks of Texas Instruments Incorporated.

Copyright

© 1999, Texas Instruments Incorporated