TMS320C51PQA57

Digital Signal Processor Dsp Overview

The TMS320C51PQA57 is a 16-bit fixed-point digital signal processor from the Texas Instruments TMS320C5x family, fabricated using static CMOS technology. It features a single-cycle 16 × 16-bit multiply/add unit and supports up to 50 million instructions per second (MIPS). The device provides 8K × 16-bit on-chip program ROM and 1K × 16-bit SARAM. It operates at 5 V with instruction cycle times of 50 ns, 35 ns, or 20 ns depending on the clock configuration. The component is housed in a 132-pin Quad Flat Package (PQ suffix) and includes a full-duplex synchronous serial port, a buffered serial port, and a host port interface.

Digital Signal Processor Dsp Feature Summary

• Single-cycle 16 × 16-bit multiply/add capability
• Up to 50 MIPS execution speed
• 8K × 16-bit on-chip program ROM and 1K × 16-bit SARAM
• Host Port Interface (HPI) for external microprocessor access

Digital Signal Processor Dsp Applications

• Coder/decoder interfaces via full-duplex synchronous serial port
• Time-division-multiplexed (TDM) serial communication
• External memory expansion up to 224K × 16-bit addressable space

Digital Signal Processor Dsp Procurement Notes

Verify the specific speed grade suffix (A57) against the official datasheet specifications for maximum clock frequency and timing parameters. Confirm that the PQ package designation matches the required 132-pin footprint for PCB layout. Ensure design compliance with the specified 5 V power supply requirements and operating temperature ranges defined in the production data.

Digital Signal Processor Dsp Selection Notes

Select this component when a 16-bit Harvard architecture DSP with integrated boot ROM is required. The inclusion of the Host Port Interface allows direct interfacing with an external host microprocessor. Consider the available on-chip memory sizes (8K ROM, 1K SARAM) relative to application code size. Verify compatibility with existing system clocks and peripheral requirements such as the buffered serial port.

Digital Signal Processor Dsp Part Context

This device belongs to the TMS320C5x generation of digital signal processors, which are upward-compatible with source code from earlier TMS320C1x and C2x families. The C51 variant specifically offers 8K of on-chip ROM, distinguishing it from other members like the C50 (9K ROM) or C52 (no ROM). The PQ package indicates a 132-pin Quad Flat Package configuration.

Digital Signal Processor Dsp Replacement Considerations

Direct replacements within the same family include the TMS320LC51 for 3.3 V operation, though voltage levels differ. Other C5x variants like the TMS320C50 or TMS320C53 offer different memory configurations but share architectural similarities. Verify pinout compatibility and electrical characteristics before substitution.