TMS320C25FNA50

Digital Signal Processor Dsp Overview

The TMS320C25FNA50 is a second-generation CMOS digital signal processor from Texas Instruments, operating at an 80-ns instruction cycle time. It features a modified Harvard architecture with a 32-bit ALU/accumulator and a single-cycle 16x16-bit hardware multiplier producing a 32-bit product. The device includes 544 words of on-chip data RAM and 4K words of on-chip program ROM. It supports a total addressable space of 128K words for combined program and data memory. Key architectural enhancements over the NMOS TMS32020 include eight auxiliary registers, bit-reversed indexed addressing for FFTs, and double-buffered serial port capabilities.

Digital Signal Processor Dsp Feature Summary

• 80-ns instruction cycle time using CMOS technology
• Single-cycle 16x16-bit parallel multiplier with 32-bit product register
• 544 words on-chip data RAM and 4K words on-chip program ROM
• Bit-reversed indexed-addressing mode optimized for radix-2 FFTs

Digital Signal Processor Dsp Applications

• Telecommunications systems requiring high-speed signal processing
• Industrial control applications utilizing real-time DSP algorithms
• Multiprocessing configurations with global data memory sharing
• Codec interfacing via the dedicated full-duplex serial port

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'FNA50' against the official SPRS010B datasheet to confirm package type (PGA, PLCC, or CER-QUAD) and temperature range. The '50' designation indicates the 80-ns speed grade. Ensure compatibility with existing 68-pin socket infrastructure or adapter sockets if migrating from older TMS32020 designs.

Digital Signal Processor Dsp Selection Notes

Select this component when an 80-ns cycle time is required for performance-critical DSP tasks. It is object-code compatible with the TMS32020 but offers enhanced features like additional instructions and auxiliary registers. Consider the TMS320C25 (100-ns) if lower power consumption is prioritized over maximum speed, or the TMS320E25 if on-chip EPROM for code modification is necessary.

Digital Signal Processor Dsp Part Context

This device belongs to the TMS320C2x family, specifically the second generation of Texas Instruments DSPs. It serves as the high-speed CMOS variant of the TMS320C25, providing improved throughput compared to the standard 100-ns version while maintaining pin-for-pin and object-code compatibility with the NMOS TMS32020 predecessor.

Digital Signal Processor Dsp Replacement Considerations

The TMS320C25 (100-ns) is a direct functional substitute with slower timing. The TMS32020 is compatible in object code but requires verification for speed and power differences. No other direct replacements are documented in the provided source material.