TMS320C6748EZWTD4 TI TMS320C674x Floating/Fixed-Point DSP 456MHz SATA LCD VPIF DDR2 EMAC USB NFBGA-361 Industrial

TMS320C6748EZWTD4 Product Overview

The TMS320C6748EZWTD4 is a flagship 32-bit floating/fixed-point digital signal processor (DSP) from Texas Instruments (TI), based on the TMS320C674x core in a 361-lead NFBGA (ZWT) package, running at up to 456MHz and meeting industrial wide-temperature requirements. The TMS320C6748EZWTD4 represents the ultimate combination of performance and environmental ruggedness within the C6748 family, retaining all flagship peripherals and the SATA storage interface while extending the operating temperature range to -40°C to +105°C, making the TMS320C6748EZWTD4 the ideal processing core for outdoor equipment, in-vehicle systems, factory automation, and other high-temperature or wide-temperature environments. On-chip memory includes 384KB of L2 unified mapped RAM/cache (flexibly configurable), along with 32KB L1 program cache and 32KB L1 data cache, providing ample high-speed storage for complex algorithms, real-time operating systems, and multimedia frameworks. The TMS320C6748EZWTD4 offers comprehensive peripheral and interconnect resources: a 16-bit DDR2 EMIF provides up to 1600Mbps of external memory bandwidth, and a 16-bit EMIFA expands to NAND/NOR Flash; a 10/100 EMAC supports standard Ethernet communication; USB 2.0 OTG and USB 1.1 OHCI Host offer flexible connectivity to USB drives, audio devices, or Bluetooth adapters; the SATA controller supports a 1.5Gbps SATA-I interface for connecting 2.5-inch HDDs or SSDs, enabling massive local data storage. The video and display subsystem includes an integrated LCD controller and Video Port Interface (VPIF), capable of directly driving TFT displays and connecting to image sensors. Additionally, 3 McASPs, 2 SPIs, 2 I2Cs, 3 UARTs, and a universal parallel port (uPP) provide ample interfaces for audio and high-speed data interaction; eCAP and eQEP meet industrial motion control needs. Leveraging the C674x core's Very Long Instruction Word (VLIW) architecture, the TMS320C6748EZWTD4 delivers up to 2736 MFLOPS of floating-point performance and 3648 MIPS of fixed-point performance at 456MHz, making the TMS320C6748EZWTD4 the ultimate choice for high-end audio processing, intelligent video analysis, industrial automation, medical imaging, and storage-intensive embedded systems in harsh environments.

TMS320C6748EZWTD4 Core Features

Processor Core: The TMS320C6748EZWTD4 features a TMS320C674x floating/fixed-point VLIW DSP core, up to 456MHz, 3648 MIPS / 2736 MFLOPS

On-Chip Memory: The TMS320C6748EZWTD4 provides 32KB L1P cache + 32KB L1D cache + 384KB L2 unified mapped RAM/cache (configurable)

DDR2 EMIF: The TMS320C6748EZWTD4 integrates a 16-bit DDR2-456 interface, up to 1600Mbps, supporting up to 256MB external SDRAM

EMIFA: The TMS320C6748EZWTD4 offers a 16-bit asynchronous external memory interface, supporting NAND/NOR Flash, SRAM, etc.

SATA Controller: The TMS320C6748EZWTD4 includes an integrated 1.5Gbps SATA-I interface, directly connectable to HDD or SSD for large-capacity local storage

Network Interface: The TMS320C6748EZWTD4 contains a 10/100 Ethernet MAC (EMAC), supporting MII/RMII interfaces

USB: The TMS320C6748EZWTD4 delivers USB 2.0 OTG (High-Speed) + USB 1.1 OHCI Host, connecting to various USB devices

Display & Video Interfaces: The TMS320C6748EZWTD4 incorporates an integrated LCD controller (supports TFT/LCD panels) + Video Port Interface (VPIF) for image sensors or video decoders

Audio & Serial Interfaces: The TMS320C6748EZWTD4 provides 3× McASP, 2× SPI, 2× I2C, 3× UART, all with DMA support; Universal Parallel Port (uPP)

Control Peripherals: The TMS320C6748EZWTD4 is equipped with an eCAP capture module, eQEP quadrature encoder interface, 3× 64-bit general-purpose timers

Power & Package: The TMS320C6748EZWTD4 operates with core voltage 1.2V, I/O voltage 3.3V/1.8V; it comes in a 361-lead NFBGA (ZWT) package, industrial temperature range (-40°C to +105°C)

TMS320C6748EZWTD4 Applications

Outdoor Smart Video Processing: The TMS320C6748EZWTD4 is ideal for outdoor surveillance cameras, traffic capture cameras, and industrial endoscopes requiring continuous wide-temperature operation

In-Vehicle Information & Assistance: The TMS320C6748EZWTD4 excels in in-vehicle multimedia processing, digital instrument clusters, and ADAS assistance processing modules

Industrial Automation & HMI: The TMS320C6748EZWTD4 can be deployed in servo drives with LCD display, industrial touchscreen controllers, and embedded data acquisition and display terminals in high-temperature shop floors

Medical Instruments: The TMS320C6748EZWTD4 is suitable for portable ultrasound diagnostic equipment, endoscope image processing, and multi-parameter patient monitors needing adaptation to sterilization or outdoor emergency environments

Storage-Intensive Embedded Systems: The TMS320C6748EZWTD4 supports industrial data recorders, audio/video streaming servers, and IoT edge gateways utilizing SATA for large-capacity storage and operating in wide-temperature environments

TMS320C6748EZWTD4 Key Advantages

456MHz Industrial-Grade Top Performance: The TMS320C6748EZWTD4 delivers 2736 MFLOPS/3648 MIPS of powerful computing reliably across a -40°C to +105°C range, making the TMS320C6748EZWTD4 the C6748 flagship that combines extreme performance with industrial reliability—ideal for the most demanding outdoor and in-vehicle applications.

Complete Flagship Peripherals & SATA Storage: The TMS320C6748EZWTD4 integrates all high-end peripherals including the SATA controller, LCD, and VPIF, enabling direct connection to HDDs or SSDs for massive local storage without sacrificing peripherals due to temperature grade.

Floating/Fixed-Point Dual Processing: The TMS320C6748EZWTD4 natively supports single-precision floating-point and fixed-point operations, efficiently handling audio effects, image processing, and real-time control algorithms within a single chip, simplifying system design.

Rich Networking & USB Connectivity: EMAC provides standard Ethernet access, while the TMS320C6748EZWTD4's USB 2.0 OTG and USB 1.1 Host flexibly connect to USB drives, Wi-Fi modules, Bluetooth adapters, or USB audio devices, meeting diverse communication needs.

Multi-Channel Audio & High-Speed Parallel Data: Three McASPs on the TMS320C6748EZWTD4 can simultaneously handle multiple independent audio streams, and the uPP provides a direct connection to FPGAs or high-speed ADCs/DACs, suitable for software-defined radio, high-speed data acquisition, and professional audio systems.

Complete Industrial Control Interfaces: eQEP on the TMS320C6748EZWTD4 directly interfaces with incremental encoders, and eCAP precisely measures pulse parameters—combined with powerful DSP computation, they easily enable high-performance servo drives and motion control.

Mature Development Ecosystem: The TMS320C6748EZWTD4 is fully supported by free Code Composer Studio (CCS) IDE and DSP/BIOS real-time operating system, along with extensive application notes and reference designs, enabling rapid progress from prototype verification to production.

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FAQ

1. How does the TMS320C6748EZWTD4 differ from the TMS320C6748EZWT3?
   
   • The TMS320C6748EZWTD4 runs at 456MHz, which is 1.5 times the 300MHz of the EZWT3, boosting floating-point performance to 2736 MFLOPS and fixed-point performance to 3648 MIPS for more compute-intensive tasks.
   • Both are industrial-grade wide-temperature devices (-40°C to +105°C), with identical peripherals and L2 RAM capacity, and both use the NFBGA-361 (ZWT) package. They can be directly swapped for a performance upgrade.
2. What is the practical significance of 456MHz industrial-grade wide temperature?
   
   • It means the TMS320C6748EZWTD4 delivers the highest frequency of the C6748 family while operating reliably in harsh environments from -40°C to +105°C, ideal for applications that demand both high compute performance and wide-temperature endurance, such as outdoor intelligent transportation and in-vehicle assistance systems.
   • There is no need to compromise between speed grade and temperature range—the TMS320C6748EZWTD4 meets all the requirements of high-performance industrial applications.
3. What can the SATA interface be used for? Is the speed sufficient?
   
   • The SATA controller on the TMS320C6748EZWTD4 supports a 1.5Gbps SATA-I interface, directly connecting to 2.5-inch HDDs, SSDs, or CFast cards.
   • It is suitable for large-capacity data recording, audio/video file storage, local database caching, and more, greatly expanding the storage boundaries of embedded DSPs.
4. What can the LCD controller and VPIF be used for?
   
   • The LCD controller on the TMS320C6748EZWTD4 directly drives TFT color LCD panels, enabling embedded human-machine interfaces without external display chips.
   • The VPIF of the TMS320C6748EZWTD4 receives digital video streams from CMOS cameras or video decoders for image capture, machine vision, and video analysis.
5. What capacity does the DDR2 EMIF support?
   
   • The 16-bit DDR2 EMIF of the TMS320C6748EZWTD4 supports up to 256MB of external DDR2 SDRAM, with an interface speed of 456MHz (DDR2-912), providing up to 1600Mbps theoretical bandwidth.
   • This capacity and bandwidth provide ample headroom for audio/video processing, image frame buffering, and large program execution.
6. What audio interfaces does the chip support? How many audio channels can be connected simultaneously?
   
   • The TMS320C6748EZWTD4 provides 3 multi-channel audio serial ports (McASP), all supporting I2S, TDM, and other formats, directly connectable to audio ADCs/DACs/Codecs.
   • Each McASP can carry multiple serial data channels, enabling the TMS320C6748EZWTD4 to handle multiple independent audio streams simultaneously, meeting the demands of professional multi-channel recording and audio matrix applications.
7. What tools and software are needed for development?
   
   • Use TI's free Code Composer Studio (CCS) IDE for development and debugging of the TMS320C6748EZWTD4.
   • Hardware debuggers such as the XDS100 or XDS200 series are recommended, supporting JTAG in-circuit programming and real-time debugging of the TMS320C6748EZWTD4.
   • TI provides extensive C674x DSP libraries, including FFT, filtering, and image processing functions, to quickly build algorithm prototypes.
8. What boot modes does the chip support?
   
   • The TMS320C6748EZWTD4 supports booting from EMIFA (NOR/NAND Flash), SPI Flash, I2C EEPROM, UART, USB, and other interfaces, offering high flexibility.
   • The most suitable boot medium can be selected based on system requirements, simplifying production flow.
9. Is the NFBGA-361 package difficult to solder?
   
   • The NFBGA-361 is a ball grid array package; professional reflow soldering processes and X-ray inspection equipment are recommended to ensure soldering reliability of the TMS320C6748EZWTD4.
   • Following TI's recommended land pattern and reflow profile, production yields can be reliably maintained.
10. What are the upgrade options if I need even higher DSP performance?
    
    • The TMS320C6748EZWTD4 is already at the top of the C6748 performance range; for advanced heterogeneous processing, consider TI's OMAP-L138 (ARM9+DSP) or the 66AK2Gx series for additional processing cores and more advanced interfaces.