TMS320LC542PGE1-50

Digital Signal Processor Dsp Overview

The TMS320LC542PGE1-50 is a fixed-point digital signal processor from the Texas Instruments TMS320LC54x family. It operates on a 3.3-V power supply with a nominal execution cycle time of 20 ns, achieving 50 MIPS performance. The device utilizes an advanced modified Harvard architecture featuring one program memory bus and three data memory buses. Key internal components include a 40-bit ALU, a 17 × 17-bit parallel multiplier coupled to a 40-bit dedicated adder for single-cycle multiply/accumulate operations, and two address generators. The TMS320LC542 includes 10K words of dual-access on-chip RAM and 2K words of ROM. It supports software-programmable wait states, a phase-locked loop clock generator, and specific peripherals such as a Time-Division Multiplexed (TDM) serial port, a Buffered Serial Port (BSP), and an 8-bit Parallel Host-Port Interface (HPI).

Digital Signal Processor Dsp Feature Summary

• Advanced Modified Harvard Architecture: Provides simultaneous access to program instructions and data via separate buses.
• High-Performance Arithmetic Unit: Features a 40-bit ALU, barrel shifter, and a 17x17-bit multiplier with a 40-bit dedicated adder for single-cycle MAC operations.
• On-Chip Memory Configuration: Includes 10K words of dual-access RAM and 2K words of ROM, configurable for program or data storage.
• Integrated Peripherals: Equipped with TDM and BSP serial ports, an 8-bit HPI, and a programmable timer.

Digital Signal Processor Dsp Applications

• Digital Signal Processing applications requiring high-speed fixed-point arithmetic.
• Telecommunications systems utilizing serial communication interfaces.
• Embedded control systems leveraging the Host-Port Interface for host processor interaction.

Digital Signal Processor Dsp Procurement Notes

Verify the ordering suffix '1' against official Texas Instruments documentation to confirm specific package variants or temperature ranges. Ensure compatibility with 3.3-V I/O levels by checking the CNT pin configuration. Cross-reference the PGE package designation with the manufacturer's pinout diagrams to validate physical footprint requirements for PCB design.

Digital Signal Processor Dsp Selection Notes

Select this component when a 3.3-V supply and 50 MIPS processing speed are required. The LC542 variant is suitable for designs needing both TDM and BSP serial ports alongside an HPI. Compare against the C542 if 5-V operation is preferred, or the VC549 if higher speeds up to 120 MIPS are necessary. Ensure the application can accommodate the 144-pin TQFP package dimensions.

Digital Signal Processor Dsp Part Context

The TMS320LC542 belongs to the TMS320C54x/LC54x/VC54x generation of DSPs. This family shares a common instruction set and core architecture, differing primarily in voltage levels, clock speeds, and on-chip memory sizes. The LC542 specifically targets low-power 3.3-V applications compared to the 5-V C542.

Digital Signal Processor Dsp Replacement Considerations

Direct substitutes within the same family include other TMS320LC542 variants with different clock speeds (e.g., -40, -66) or packages. Verify electrical specifications and pin compatibility before substitution.