Texas Instruments TMS320C6701GJCA120

Overview

TMS320C6701GJCA120 from Texas Instruments is a high-performance floating-point digital signal processor (DSP) based on the VelociTI VLIW architecture, delivering 1 GFLOPS at 120 MHz with 8 instructions/cycle, 1M-bit on-chip SRAM (512K program/cache + 512K dual-access data), and 32-bit EMIF for SDRAM/SBSRAM interfacing - deployed in multichannel audio processing, radar baseband, and telecom infrastructure.

For engineers reviewing the TMS320C6701GJCA120 datasheet, TMS320C6701GJCA120 pinout, TMS320C6701GJCA120 application, or TMS320C6701GJCA120 equivalent, key selection criteria include IEEE single/double-precision hardware support, 352-pin GJC BGA package compatibility, 1.8-V core / 3.3-V I/O voltage configuration, and pin-for-pin alignment with TMS320C6201 fixed-point DSPs.

Technical Context

The TMS320C6701GJCA120 implements an eight-functional-unit VelociTI VLIW CPU with four floating-/fixed-point ALUs, two fixed-point ALUs, and two floating-/fixed-point multipliers - enabling two MACs per cycle (240 MMACS at 120 MHz). Its load-store architecture uses 32 general-purpose 32-bit registers split across two register files (A/B), each with dedicated data-addressing units (.D1/.D2).

It integrates a flexible PLL clock generator (x1/x4 multiplier), IEEE-1149.1 JTAG boundary-scan, 16-bit HPI for full memory map access, two McBSPs supporting AC97, SPI, T1/E1 framing, and four-channel DMA with auxiliary channel - all operating under 1.8-V core and 3.3-V I/O supply conditions specified for the 120-MHz speed grade.

Key Specifications

Pinout & Package

352-pin GJC Ball Grid Array (BGA), 35 × 35 mm footprint, 0.18-µm CMOS process. Package supports standard reflow profiles and requires controlled impedance routing for high-speed buses (EMIF, McBSP, HPI).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6701GJCA150 and TMS320C6701GJCA167, the TMS320C6701GJCA120 provides optimal balance of deterministic real-time latency, thermal manageability, and cost-per-GFLOP in mid-tier embedded DSP systems requiring IEEE-compliant floating-point precision.

Availability

TMS320C6701GJCA120 is available at Aetrix Electronics and suitable for audio signal processing, radar baseband processing, and telecom infrastructure requiring stable component supply across long-lifecycle industrial deployments.

Supply support for TMS320C6701GJCA120 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 processing technologies with broad industrial, automotive, and communications market reach.

The TMS320C67x DSP family was designed specifically for high-throughput, low-latency floating-point computation in multichannel real-time systems - targeting radar, medical imaging, and professional audio equipment.

FAQ

What is the core voltage requirement for the TMS320C6701GJCA120?

The TMS320C6701GJCA120 requires a 1.8-V core supply (CVDD) and 3.3-V I/O supply (DVDD), as specified in the recommended operating conditions table. This dual-voltage architecture reduces dynamic power consumption while maintaining interface compatibility with standard 3.3-V peripherals. The 1.8-V core is fixed for the -120 speed grade and must be tightly regulated within ±3% tolerance.

Does the TMS320C6701GJCA120 support IEEE 754 single- and double-precision arithmetic in hardware?

Yes, the TMS320C6701GJCA120 includes dedicated hardware units for IEEE 754 single- and double-precision floating-point operations across six of its eight functional units (.L1, .M1, .D1, .D2, .M2, .L2). This enables full compliance with ANSI C99 floating-point semantics and eliminates software library dependencies for transcendental functions.

How many external memory devices can the TMS320C6701GJCA120 interface to simultaneously via its EMIF?

The TMS320C6701GJCA120 EMIF supports up to four independent memory spaces via CE0–CE3 chip-enable outputs, allowing concurrent connection to SDRAM, SBSRAM, SRAM, and EPROM devices. Each space is individually configurable for timing parameters, enabling heterogeneous memory architectures without external logic.

Is the TMS320C6701GJCA120 pin-compatible with any fixed-point DSPs?

Yes, the TMS320C6701GJCA120 is explicitly pin-compatible with the TMS320C6201 fixed-point DSP, sharing identical GJC BGA pinout, signal naming, and power/ground assignments. This enables hardware reuse across floating-point and fixed-point variants in platform-based designs where algorithm complexity may evolve post-deployment.

What boot modes does the TMS320C6701GJCA120 support, and how are they configured?

The TMS320C6701GJCA120 supports four boot modes (HPI, 8-bit ROM, 16-bit ROM, 32-bit ROM) selected via BOOTMODE[4:0] pins sampled at reset. Configuration is static and latched at power-up; no runtime reconfiguration is possible. Boot mode selection determines initial program fetch source and memory mapping behavior for the first 64K bytes of execution.