Overview
The TMS320DM355, produced by Texas Instruments, is a highly integrated Digital Media System-on-Chip (DMSoC) designed for various portable digital video applications. This chip combines high-performance MPEG4 HD (720p) and JPEG codecs, along with advanced video processing capabilities, to deliver high picture quality at low power consumption and cost. The DM355 is based on the ARM926EJ-S RISC processor, which operates at clock rates of up to 270 MHz and supports 32-bit, 16-bit, and 8-bit data processing. The device is particularly suited for applications such as digital still cameras, digital photo frames, IP security cameras, 4-channel digital video recorders, and video doorbell systems.
Key Specifications
| Feature | Specification |
|---|---|
| Processor Core | ARM926EJ-S RISC processor |
| Clock Rate | Up to 270 MHz |
| Cache Memory | 16 KB Instruction Cache, 8 KB Data Cache |
| On-Chip RAM/ROM | 32 KB RAM, 8 KB ROM |
| Memory Interfaces | DDR2/mDDR, Asynchronous EMIF (AEMIF), NAND, OneNAND |
| Video Capabilities | Up to 720p MPEG4 SP, Up to 50M pixels per second JPEG |
| Peripheral Interfaces | USB 2.0, MMC/SD, SPI, UART, I2C, PWM, RTO |
| Package Type | 337-Pin Ball Grid Array (BGA) |
| Process Technology | 90 nm |
| Voltage | 1.3 V Core, 3.3 V and 1.8 V I/O |
Key Features
- ARM926EJ-S RISC Processor: Supports 32-bit, 16-bit, and 8-bit data processing with up to 270 MHz clock rate.
- Video Processing Subsystem: Includes MPEG4/JPEG coprocessor, hardware IPIPE for real-time image processing, and support for up to 14-bit CCD/CMOS digital interface.
- Memory and Storage: DDR2/mDDR memory controller, asynchronous EMIF (AEMIF), NAND, OneNAND, and flash memory interfaces.
- Peripheral Interfaces: USB 2.0, MMC/SD, SPI, UART, I2C, PWM, RTO, and audio serial ports (ASP).
- Power Management: Configurable power-saving modes and enhanced direct-memory-access (EDMA) controller with 64 independent channels.
- Debug and Development: EmbeddedICE-RT™ logic for real-time debug, JTAG interface, and ETB™ (Embedded Trace Buffer™) with 4K-Bytes trace buffer memory.
Applications
- Digital Still Cameras: High-quality image capture and processing.
- Digital Photo Frames: Display and manage digital photos with advanced features.
- IP Security Cameras: Real-time video monitoring and recording.
- 4-Channel Digital Video Recorders: Multi-channel video recording and playback.
- Video Doorbell Systems: Real-time video and communication capabilities.
- Other Portable Digital Video Applications: Low-cost, high-performance solutions for various video-based products.
Q & A
- What is the TMS320DM355?
The TMS320DM355 is a Digital Media System-on-Chip (DMSoC) designed for portable digital video applications.
- What processor core does the DM355 use?
The DM355 uses the ARM926EJ-S RISC processor.
- What are the clock rate options for the DM355?
The DM355 operates at clock rates of up to 270 MHz.
- What video processing capabilities does the DM355 offer?
The DM355 supports up to 720p MPEG4 SP and up to 50M pixels per second JPEG.
- What types of memory interfaces does the DM355 support?
The DM355 supports DDR2/mDDR, asynchronous EMIF (AEMIF), NAND, and OneNAND.
- What peripheral interfaces are available on the DM355?
The DM355 includes USB 2.0, MMC/SD, SPI, UART, I2C, PWM, RTO, and audio serial ports (ASP).
- What is the package type of the DM355?
The DM355 is packaged in a 337-Pin Ball Grid Array (BGA).
- What process technology is used in the DM355?
The DM355 is fabricated using 90 nm process technology.
- What are the voltage requirements for the DM355?
The DM355 requires 1.3 V core voltage and 3.3 V and 1.8 V I/O voltages.
- What debug and development tools are available for the DM355?
The DM355 includes EmbeddedICE-RT™ logic for real-time debug, JTAG interface, and ETB™ (Embedded Trace Buffer™) with 4K-Bytes trace buffer memory.
