TMS320C542PGE2-40

Digital Signal Processor Dsp Overview

The TMS320C542PGE2-40 is a fixed-point digital signal processor from the Texas Instruments C54x family. It operates at a nominal voltage of 5.0 V with a single-cycle execution time of 25 ns, achieving 40 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 and 2K words of on-chip ROM. It integrates a Time-Division Multiplexed (TDM) serial port, a Buffered Serial Port (BSP), and an 8-bit Parallel Host-Port Interface (HPI). The component is housed in a 144-pin Thin Quad Flatpack (TQFP) package.

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 Arithmetic Unit: Features a 40-bit ALU, a 17x17-bit parallel multiplier coupled to a 40-bit dedicated adder for single-cycle MAC operations, and a Compare, Select, and Store Unit (CSSU).
• Integrated Peripherals: Includes a TDM serial port, a BSP, an 8-bit HPI, one 16-bit timer, and software-programmable wait-state generation with bank switching capabilities.
• Power Management: Supports IDLE1, IDLE2, and IDLE3 instructions for power-down modes, along with CLKOUT off control and XIO off control to disable external buses.

Digital Signal Processor Dsp Applications

• Digital audio processing and codec applications utilizing the integrated serial ports.
• Modem and telecommunications equipment requiring high-speed fixed-point arithmetic.
• Multiprocessor systems leveraging the Parallel Host-Port Interface (HPI) for host communication.
• Industrial control systems utilizing the timer and interrupt capabilities.

Digital Signal Processor Dsp Procurement Notes

Verify the specific ordering suffix 'PGE2-40' against current manufacturer documentation to confirm pin compatibility and electrical characteristics. Ensure that the 5.0 V core voltage requirement aligns with the target system's power supply design. Confirm availability status as legacy components may have limited production runs or obsolescence notices.

Digital Signal Processor Dsp Selection Notes

Select this model when a 5.0 V I/O interface is required, distinguishing it from the LC54x (3.3 V) and VC54x (2.5 V core) variants. The presence of both TDM and BSP serial ports makes it suitable for complex serial communication protocols. Consider the 144-pin TQFP package constraints for PCB layout and thermal management during the initial design phase.

Digital Signal Processor Dsp Part Context

This component belongs to the TMS320C54x family, which shares architectural similarities with the TMS320LC54x and TMS320VC54x families. While the instruction set and peripheral structures are largely compatible, differences exist in operating voltage, execution speed, and on-chip memory configurations across the different series prefixes.

Digital Signal Processor Dsp Replacement Considerations

Direct replacements within the same family include other C542 variants with different speed grades or package types, such as TMS320C542PGE-50 or TMS320C542PGE-80, provided the slower clock speed is acceptable. Cross-family migration to LC542 or VC542 requires voltage level translation and power supply redesign.

Digital Signal Processor Dsp FAQ

What is the maximum addressable memory space for the TMS320C542?

The TMS320C542 supports a maximum addressable memory space of 192K x 16 bits, divided into 64K words of program memory, 64K words of data memory, and 64K words of I/O space.

How does the TMS320C542 handle interrupts?

The device supports four maskable external interrupts (INT0–INT3) and one nonmaskable interrupt (NMI). Interrupts can be polled and reset using the interrupt flag register, and the processor provides fast return from interrupt mechanisms.

What is the function of the CSSU in this DSP?

The Compare, Select, and Store Unit (CSSU) facilitates the Add/Compare Selection of the Viterbi Operator, allowing for efficient decoding algorithms commonly used in communications.