TMS320LC549GGU-80

Digital Signal Processor Dsp Overview

The TMS320LC549GGU-80 is a fixed-point digital signal processor from Texas Instruments, based on the C54x DSP core architecture. It operates at a maximum clock frequency of 80 MHz and features a Harvard bus structure with four independent buses for simultaneous instruction and data access. The device integrates 16 KB of on-chip RAM (DSK) and 512 KB of on-chip ROM (DROM). Key peripherals include a multi-channel buffered serial port (McBSP), a host port interface (HPI), and an event manager module, supporting low-power operation through multiple idle modes.

Digital Signal Processor Dsp Feature Summary

• C54x DSP Core: 16-bit fixed-point processing with a 17x17 or 40-bit single-cycle multiply-accumulate unit.
• Memory Architecture: Includes 16 KB DSK RAM and 512 KB DROM, expandable to 4M words via external memory interfaces.
• Peripheral Integration: Features McBSP for audio/voice, HPI for host communication, and two 16-bit timers.
• Event Manager: Contains two 16-bit event managers with capture units and compare units for motor control applications.

Digital Signal Processor Dsp Applications

• Digital audio processing and voice codecs
• Modems and telecommunications equipment
• Motor control systems using PWM generation

Digital Signal Processor Dsp Procurement Notes

Verify the specific suffix 'GGU-80' against the manufacturer's current product status, as legacy C54x devices may be subject to obsolescence notices. Confirm the package type corresponds to the TQFP-144 specification associated with this marking code. Ensure that any replacement components maintain compatibility with the existing boot configuration pins and voltage levels.

Digital Signal Processor Dsp Selection Notes

Select this component when a high-performance 16-bit DSP is required for complex algorithms such as FFT or FIR filtering. The 80 MHz speed grade is suitable for real-time signal processing tasks. Consider the available on-chip memory size relative to application requirements to minimize external memory dependencies. Verify peripheral availability, specifically the need for the Event Manager if motor control functions are intended.

Digital Signal Processor Dsp Part Context

This part belongs to the TMS320LC54x family, which extends the standard C54x architecture with low-power CMOS technology. The LC549 variant offers enhanced memory capacity compared to base models like the LC5410. It is designed for battery-powered and portable applications due to its support for various power-saving modes, including IDLE1 through IDLE4.

Digital Signal Processor Dsp Replacement Considerations

Direct pin-to-pin replacements within the same family include other C54x variants such as the TMS320LC5402 or TMS320VC5416, provided the memory map and peripheral set meet the design requirements. Cross-family migration to C55x or C6000 series requires significant architectural redesign.