TMS320LC542PGE2-50

Digital Signal Processor Dsp Overview

The TMS320LC542PGE2-50 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 features an advanced modified Harvard architecture with one program memory bus and three data memory buses. Key specifications include 10K words of dual-access on-chip RAM, 2K words of on-chip ROM, and a 40-bit Arithmetic Logic Unit (ALU). It integrates a 17 × 17-bit parallel multiplier coupled to a 40-bit dedicated adder for single-cycle multiply/accumulate operations.

Digital Signal Processor Dsp Feature Summary

• Advanced Modified Harvard Architecture: Provides simultaneous access to program instructions and data via separate buses, enabling two reads and one write operation per cycle.
• High-Performance DSP Core: Features a 40-bit ALU with a barrel shifter, two independent 40-bit accumulators, and a Compare, Select, and Store Unit (CSSU) for Viterbi operators.
• On-Chip Memory Configuration: Includes 10K words of dual-access RAM and 2K words of ROM, which can be configured as program or data memory.
• Integrated Peripherals: Equipped with a Time-Division Multiplexed (TDM) serial port, a Buffered Serial Port (BSP), an 8-bit Parallel Host-Port Interface (HPI), and a 16-bit timer.

Digital Signal Processor Dsp Applications

• Digital Signal Processing algorithms requiring high throughput and low latency.
• Telecommunications systems utilizing TDM and BSP serial interfaces.
• Embedded control applications leveraging the HPI for host communication.
• Audio and video processing tasks supported by the single-cycle MAC capability.

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix 'PGE2' against official Texas Instruments documentation to confirm package type and electrical characteristics. Ensure compatibility with 3.3-V I/O levels by checking the CNT pin configuration. Confirm that the required clock speed and memory configuration align with the system design constraints before procurement.

Digital Signal Processor Dsp Selection Notes

Select this component when a 3.3-V supply and 20-ns cycle time are required. The LC542 variant is suitable for designs needing both TDM and BSP serial ports alongside an HPI interface. Consider the 144-pin TQFP package dimensions if using the PGE suffix. Evaluate power consumption requirements, as the device supports IDLE modes for power-down control.

Digital Signal Processor Dsp Part Context

The TMS320LC542 belongs to the broader TMS320C54x/LC54x/VC54x family of fixed-point DSPs. It shares the core architecture with variants like the C542 and VC549 but differs in voltage levels and execution speeds. The LC542 specifically targets 3.3-V applications, distinguishing it from the 5-V C542 and higher-speed VC549 models.

Digital Signal Processor Dsp Replacement Considerations

Direct replacements within the same family include other LC542 variants with different speed grades or packages, such as TMS320LC542PGE-40 or TMS320LC542PGE-66. Verify pin compatibility and memory configurations when substituting with other members of the ’54x series.