TMS320C25GBL

Digital Signal Processor Dsp Overview

The TMS320C25GBL is a CMOS second-generation digital signal processor from Texas Instruments, operating at a 100-ns instruction cycle time. It features a 32-bit ALU/accumulator and a single-cycle 16x16-bit multiplier with 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 data and program memory. Key architectural enhancements over the NMOS TMS32020 include eight auxiliary registers, an eight-level hardware stack, bit-reversed indexed addressing for FFTs, and double-buffered serial port capabilities.

Digital Signal Processor Dsp Feature Summary

• CMOS technology with 100-ns instruction cycle time and single 5-V supply
• 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 real-time signal processing
• Industrial control applications utilizing high-speed number-crunching
• Multiprocessor configurations with global data memory sharing

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'GBL' against the manufacturer's current mechanical drawing to confirm pin compatibility and package dimensions. As this is a legacy component, confirm availability status and lead times directly with authorized distributors or Texas Instruments sales offices. Ensure design-in documentation matches the SPRS010B datasheet revision.

Digital Signal Processor Dsp Selection Notes

Select the TMS320C25GBL when object-code compatibility with the TMS32020 is required alongside lower power consumption due to CMOS technology. Choose this model over the TMS320C25-50 if an 80-ns cycle time is not necessary, as it offers cost advantages. Consider the TMS320E25 if on-chip EPROM is needed for code development rather than fixed ROM.

Digital Signal Processor Dsp Part Context

The TMS320C25GBL belongs to the second generation of the TMS320 family, which also includes the TMS32020, TMS320C25-50, and TMS320E25. This generation introduced significant architectural improvements such as enhanced instruction sets and dedicated hardware stacks compared to the first-generation TMS32010. The C25 series established software compatibility across the family while offering varied performance and memory options.

Digital Signal Processor Dsp Replacement Considerations

The TMS320C25 is architecturally identical and pin-for-pin compatible. The TMS320C25-50 offers faster 80-ns timing but shares the same interface. No direct modern replacements are documented in the provided source material.