Texas Instruments TMS320C6748BZWTD4

Overview

TMS320C6748BZWTD4 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, 256KB L2 unified RAM/cache, and integrated peripherals including EMAC, USB 2.0 OTG, SATA I/II, and PRUSS. It targets low-power embedded signal processing in biometric identification and machine vision systems.

For engineers reviewing the TMS320C6748BZWTD4 datasheet, TMS320C6748BZWTD4 pinout, TMS320C6748BZWTD4 application, or TMS320C6748BZWTD4 equivalent, key selection criteria include its 456-MHz C674x DSP core, dual-USB support (OTG + OHCI), DDR2/mDDR memory controller, secure boot capability (AES-128/SHA-256), and 361-ball PBGA package with 0.80-mm pitch.

Technical Context

The TMS320C6748BZWTD4 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 arithmetic, up to 2746 MFLOPS, and mixed-precision multiply operations including 2 SP×SP→SP per cycle.

Peripherals are tightly coupled via high-bandwidth interconnect: EDMA3 with 64 independent DMA channels manages data movement between 128KB shared RAM, external memories (EMIFA/DDR2), and 16-channel McASP; PRUSS provides real-time offload with two 32-bit RISC cores (4KB IRAM + 512B DRAM each), while hardware-accelerated SATA NCQ (32-entry) and EMAC (MII/RMII) enable storage and network connectivity without CPU overhead.

Key Specifications

Pinout & Package

Package: 361-ball NFBGA (ZWT suffix), 16.0 mm × 16.0 mm body size, 0.80-mm ball pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320C6748BZWTD4, the TMS320C6747BZWTD4 trades peak compute (2746 vs. 2064 MFLOPS) for lower power, while OMAP-L138BZWT adds ARM9 general-purpose capability at the expense of DSP-only optimization and SATA/PRUSS functionality - making TMS320C6748BZWTD4 optimal for standalone, high-throughput signal processing with storage and real-time I/O.

Availability

TMS320C6748BZWTD4 is available at Aetrix Electronics and suitable for biometric identification terminals, currency inspection systems, and low-end machine vision cameras requiring stable component supply, long-term industrial lifecycle support, and guaranteed traceable sourcing.

Supply support for TMS320C6748BZWTD4 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 headquartered in Dallas, Texas, designing analog, embedded processing, and wireless chips for industrial, automotive, and communications markets.

The TMS320C6748BZWTD4 belongs to TI's C6000™ DSP platform, engineered for low-power, high-performance signal processing in resource-constrained embedded systems where floating-point precision, peripheral integration, and security are critical.

FAQ

What is the maximum operating frequency of the TMS320C6748BZWTD4 and what voltage is required?

The TMS320C6748BZWTD4 operates at a maximum frequency of 456 MHz, which requires a core supply voltage (VDD_CORE) of 1.3 V. This voltage is specified in the recommended operating conditions section of the datasheet and must be maintained within ±3% tolerance to ensure stable operation at full speed. The device also supports dynamic voltage scaling down to 1.0 V for lower-frequency operation to reduce power consumption.

Does the TMS320C6748BZWTD4 support secure boot, and what cryptographic algorithms are used?

Yes, the TMS320C6748BZWTD4 supports TI Basic Secure Boot, which uses AES-128 for boot image encryption and SHA-256 for image authentication. The secure boot flow begins from a hardware root-of-trust, validates the encrypted image before loading it into memory, and locks the JTAG port by default to prevent debug attacks. This ensures that only authorized, unmodified firmware executes on the TMS320C6748BZWTD4.

What memory interfaces does the TMS320C6748BZWTD4 provide, and what are their supported protocols?

The TMS320C6748BZWTD4 provides two external memory interfaces: the EMIFA supporting NOR flash, NAND flash, and 16-bit SDRAM; and a dedicated DDR2/mDDR memory controller supporting 16-bit DDR2 (up to 156 MHz) and mobile DDR (up to 150 MHz). It also includes 256KB of on-chip L2 unified RAM/cache and 128KB of shared RAM accessible by both DSP and host peripherals - enabling flexible, low-latency memory architecture for TMS320C6748BZWTD4-based systems.

Can the TMS320C6748BZWTD4 connect directly to SATA storage devices, and what features does its SATA controller support?

Yes, the TMS320C6748BZWTD4 integrates a native Serial ATA controller supporting both SATA I (1.5 Gbps) and SATA II (3.0 Gbps) standards. It includes hardware-assisted Native Command Queuing (NCQ) for up to 32 commands, full SATA power management (including partial/slumber modes), port multiplier support, and command-based switching - allowing direct connection to 2.5-inch SSDs or HDDs without external bridge chips in TMS320C6748BZWTD4 designs.

What real-time I/O capabilities does the TMS320C6748BZWTD4 offer beyond standard peripherals like UART and SPI?

Beyond standard serial interfaces, the TMS320C6748BZWTD4 offers programmable real-time I/O via its PRU Subsystem (two independent 32-bit RISC cores with 4KB IRAM each), two enhanced HRPWM modules with dead-band generation and trip-zone inputs, and three eCAP modules configurable as capture inputs or APWM outputs. These enable deterministic, sub-microsecond timing control for motor drives, power converters, encoder interfaces, and custom protocol implementation - all without CPU intervention in TMS320C6748BZWTD4 applications.