Texas Instruments TMS320C542PGE1-40

Overview

TMS320C542PGE1-40 from Texas Instruments is a 5-V, fixed-point digital signal processor (DSP) with 10K × 16-bit dual-access on-chip RAM, 2K × 16-bit on-chip ROM, and 25-ns single-cycle instruction execution (40 MIPS). It integrates a TDM serial port, buffered serial port (BSP), 8-bit host-port interface (HPI), and on-chip PLL clock generator. It targets real-time audio processing in telephony infrastructure equipment.

For engineers reviewing the TMS320C542PGE1-40 datasheet, TMS320C542PGE1-40 pinout, TMS320C542PGE1-40 application, or TMS320C542PGE1-40 equivalent, key selection criteria include 144-pin TQFP package compatibility, 5-V core/I/O operation, TDM/BSP dual-serial support, HPI host connectivity, and 40-MIPS deterministic fixed-point throughput for voice codec execution.

Technical Context

The TMS320C542PGE1-40 implements an advanced modified Harvard architecture with one program bus and three data buses, enabling simultaneous instruction fetch and dual data reads plus write per cycle. Its 40-bit ALU includes barrel shifter and dual accumulators, supporting non-pipelined MAC in one cycle.

On-chip peripherals include software-programmable wait-state generator, PLL clock generator (with internal oscillator or external clock input), TDM and BSP serial ports, 8-bit HPI, and one 16-bit timer. Power management supports IDLE1/IDLE2/IDLE3 modes and CLKOUT disable.

Key Specifications

Pinout & Package

Package: 144-pin Thin Quad Flatpack (TQFP), PGE suffix, 20 mm × 20 mm body, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-point DSP applications.

Compared with TMS320C542PGE1-40, the LC542 offers lower voltage operation at identical speed but mandates I/O voltage translation, while the C549 delivers scalable memory and enhanced serial throughput-making it suitable for next-generation voice platforms where code size and channel count increase.

Availability

TMS320C542PGE1-40 is available at Aetrix Electronics and suitable for voice codec engines, telecom line cards, digital audio mixers, and industrial voice recognition terminals requiring stable component supply across extended product lifecycles.

Supply support for TMS320C542PGE1-40 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal technologies with over 50 years of innovation in DSP architecture.

The TMS320C54x family was engineered for cost-sensitive, real-time fixed-point signal processing in voice, audio, and telecommunications infrastructure-prioritizing deterministic latency, on-chip memory efficiency, and multi-serial interface integration.

FAQ

What is the maximum external memory address space supported by the TMS320C542PGE1-40?

The TMS320C542PGE1-40 supports up to 192K × 16-bit total addressable memory space: 64K words program, 64K words data, and 64K words I/O. Its 16-bit address bus (A0–A15) directly accesses external memory, while extended addressing (A16–A22) is not implemented in this variant-unlike the '548/'549 devices.

Does the TMS320C542PGE1-40 include an on-chip phase-locked loop (PLL)?

Yes, the TMS320C542PGE1-40 includes an on-chip PLL clock generator. It accepts either an external clock or crystal (via X1/X2/CLKIN pins) and uses CLKMD1–CLKMD3 to select multiplication factors (×1 to ×4), enabling flexible system clock derivation without external clock synthesizers.

Can the TMS320C542PGE1-40 operate with a 3.3-V supply?

No, the TMS320C542PGE1-40 is a 5-V-only device. Its CVDD and DVDD rails require 5 V ± 0.5 V. For 3.3-V operation, the TMS320LC542PGE1-25 is the functionally equivalent low-voltage variant with identical pinout and peripheral set.

How many serial ports does the TMS320C542PGE1-40 integrate, and what types are they?

The TMS320C542PGE1-40 integrates two serial ports: one time-division multiplexed (TDM) port and one buffered serial port (BSP). Both support 8- or 16-bit transfers and include dedicated frame sync (TFSR/TFSX, BFSR/BFSX) and clock (TCLKR/TCLKX, BCLKR/BCLKX) pins for synchronous communication with codecs and other peripherals.

Is the TMS320C542PGE1-40 compatible with JTAG-based emulation and debugging?

Yes, the TMS320C542PGE1-40 includes IEEE Std 1149.1 (JTAG) boundary scan logic with TMS, TCK, TRST, TDI, and TDO pins. This enables full-scan emulation, real-time breakpoint insertion, and register/memory inspection using standard TI XDS emulators without requiring additional debug hardware.