Texas Instruments TMS320C6748BZWT4

Overview

TMS320C6748BZWT4 from Texas Instruments is a fixed- and floating-point digital signal processor (DSP) based on the C674x VLIW core, operating at 456 MHz with 32KB L1P/L1D cache and 256KB L2 unified RAM/cache. It integrates EMAC, USB 2.0 OTG + USB 1.1 OHCI, SATA I/II, dual McASP/McBSP, and PRUSS for real-time offload-enabling low-power audio/video processing in embedded vision systems.

For engineers reviewing the TMS320C6748BZWT4 datasheet, TMS320C6748BZWT4 pinout, TMS320C6748BZWT4 application, or TMS320C6748BZWT4 equivalent, key selection criteria include its 456-MHz C674x DSP performance (2746 MFLOPS), dual DDR2/mDDR + EMIFA memory support, hardware-accelerated secure boot (AES-128/SHA-256), and 361-ball 0.80-mm-pitch NFBGA package compatibility with industrial temperature range operation.

Technical Context

The TMS320C6748BZWT4 implements a two-level cache hierarchy: 32KB L1P direct-mapped program cache and 32KB L1D 2-way set-associative data cache feed a 256KB L2 unified mapped RAM/cache configurable as RAM, cache, or hybrid. Its C674x core supports IEEE SP/DP floating-point, mixed-precision multiply (2 SP×SP→SP/cycle), and byte-addressable 8-/16-/32-/64-bit data with 8-bit overflow protection.

Peripheral integration centers on deterministic real-time control: EDMA3 with 64 independent DMA channels, PRUSS with two 32-bit RISC cores (4KB IRAM + 512B DRAM each), eHRPWM with dead-band generation, and eCAP with four-event timestamp capture-coordinated via a switched central resource and dedicated interrupt controller.

Key Specifications

Pinout & Package

Package: 361-ball NFBGA (ZWT), 16.0 mm × 16.0 mm body, 0.80-mm ball pitch, RoHS-compliant, industrial temperature grade (–40°C to 105°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6748BZWT4, the C6747BZWT4 reduces cost and power at the expense of SATA, PRUSS, and security features, while the OMAP-L138BZWT4 adds ARM-based system management capability at higher design complexity and thermal load.

Availability

TMS320C6748BZWT4 is available at Aetrix Electronics and suitable for biometric identification, currency inspection, low-end machine vision, and industrial Ethernet gateway applications requiring stable component supply across extended product lifecycles.

Supply support for TMS320C6748BZWT4 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 company specializing in analog, embedded processing, and connectivity technologies, with decades of leadership in DSP innovation and industrial-grade reliability.

The TMS320C6748BZWT4 belongs to TI's C6000™ DSP platform, designed specifically for low-power, high-performance signal processing in resource-constrained embedded systems where real-time determinism and peripheral integration are critical.

FAQ

What is the maximum operating frequency of the TMS320C6748BZWT4 and what voltage is required?

The TMS320C6748BZWT4 operates at a maximum frequency of 456 MHz, which requires a core supply voltage (VDD_CORE) of 1.3 V. This voltage level is specified in the recommended operating conditions for the 456-MHz speed grade and must be tightly regulated with appropriate decoupling to ensure stable high-frequency operation of the C674x DSP core.

Does the TMS320C6748BZWT4 support secure boot, and what cryptographic algorithms does it use?

Yes, the TMS320C6748BZWT4 implements TI Basic Secure Boot using AES-128 for boot image encryption and SHA-256 for image authentication. The boot ROM validates the decrypted image before execution, and the JTAG port is locked by default to prevent unauthorized debug access-ensuring that only cryptographically verified firmware runs on the TMS320C6748BZWT4.

What memory interfaces does the TMS320C6748BZWT4 provide for external storage?

The TMS320C6748BZWT4 provides two independent external memory interfaces: an EMIFA supporting NOR/NAND flash and 16-bit SDRAM, and a DDR2/mDDR memory controller supporting 16-bit DDR2 or mobile DDR with up to 256 MB address space. These interfaces enable simultaneous access to code storage (NAND), real-time buffers (DDR2), and legacy peripherals (EMIFA).

Can the TMS320C6748BZWT4 connect to video sensors and displays, and which interfaces are used?

Yes, the TMS320C6748BZWT4 supports video I/O through its Video Port Interface (VPIF), which provides two 8-bit BT.656 capture channels and two 8-bit BT.656 display channels-or single 16-bit raw video paths. It also includes an LCD controller and uPP for parallel FPGA or image sensor interfacing, enabling direct connection to CMOS sensors and display panels without external bridge ICs.

What is the role of the PRU subsystem in the TMS320C6748BZWT4, and how is it configured?

The PRU subsystem in the TMS320C6748BZWT4 consists of two independent 32-bit RISC cores (PRU0 and PRU1), each with 4KB instruction RAM and 512 bytes data RAM. It is configured via the PRUSS module registers and can be disabled in software to reduce power. Each PRU exposes register R30 externally, enabling synchronized control of peripherals like eHRPWM or GPIO-offloading deterministic timing tasks from the main C674x DSP core.