Overview
The TMS320DM355, produced by Texas Instruments, is a highly integrated Digital Media System-on-Chip (DMSoC) designed for various digital media applications. This chip is based on the ARM926EJ-S RISC processor, which operates at frequencies of up to 270 MHz. It is optimized for high-performance digital media processing, including MPEG4 and JPEG codecs, making it suitable for applications such as digital still cameras, digital photo frames, IP security cameras, and 4-channel digital video recorders.
The DM355 offers a comprehensive set of peripherals and interfaces, enabling seamless integration with external devices. It supports multiple memory types, including DDR2/mDDR, NAND, and OneNAND, and features advanced video processing capabilities, such as hardware on-screen display (OSD) and composite NTSC/PAL video encoder output.
Key Specifications
| Specification | Details |
|---|---|
| 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 |
| Video Processing | Up to 720p MPEG4 SP, up to 50M pixels per second JPEG |
| Memory Interfaces | DDR2/mDDR, NAND, OneNAND, MMC/SD |
| 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 |
| USB Interface | USB 2.0 Full and High-Speed Device and Host |
| Audio Interfaces | Two Audio Serial Ports (ASP), AC97 Audio Codec Interface |
| General-Purpose I/O | Up to 104 GPIO Pins |
Key Features
- High-Performance Video Processing: Supports up to 720p MPEG4 SP and up to 50M pixels per second JPEG.
- Advanced Image Processing: Hardware IPIPE for real-time image processing, resize engine, and on-screen display (OSD).
- Flexible Memory Interfaces: DDR2/mDDR, NAND, OneNAND, MMC/SD, and asynchronous external memory interface (AEMIF).
- Comprehensive Peripherals: Includes three UARTs, three SPI interfaces, four PWM outputs, four RTO outputs, and two MMC/SD interfaces.
- USB and Audio Capabilities: USB 2.0 full and high-speed device and host interface, two ASPs, and AC97 audio codec interface.
- Power and Clock Management: Configurable PLL controller, power-saving modes, and support for crystal or external clock input.
- Debug and Development Tools: EmbeddedICE-RT™ logic for real-time debug, JTAG interface, and ETB™ 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 surveillance with high-resolution video output.
- 4-Channel Digital Video Recorders: Multi-channel video recording and playback.
- Video Door Bell Applications: Integrated video and audio processing for smart doorbells.
- Other Portable Digital Video Applications: Low-cost, high-performance solutions for various portable video devices.
Q & A
- What is the processor core of the TMS320DM355?
The processor core is the ARM926EJ-S RISC processor.
- What are the maximum clock rates supported by the DM355?
The DM355 supports clock rates of up to 270 MHz.
- What types of memory interfaces does the DM355 support?
The DM355 supports DDR2/mDDR, NAND, OneNAND, MMC/SD, and asynchronous external memory interface (AEMIF).
- What video processing capabilities does the DM355 offer?
The DM355 supports up to 720p MPEG4 SP and up to 50M pixels per second JPEG, along with hardware IPIPE for real-time image processing.
- Does the DM355 have USB capabilities?
Yes, the DM355 has a USB 2.0 full and high-speed device and host interface.
- What audio interfaces are available on the DM355?
The DM355 includes two Audio Serial Ports (ASP) and an AC97 audio codec interface.
- How many GPIO pins does the DM355 have?
The DM355 has up to 104 GPIO pins.
- What debug tools are available for the DM355?
The DM355 features EmbeddedICE-RT™ logic for real-time debug, JTAG interface, and ETB™ with 4K-Bytes trace buffer memory.
- What are some common applications of the DM355?
Common applications include digital still cameras, digital photo frames, IP security cameras, 4-channel digital video recorders, and video door bell applications.
- What is the package type of the DM355?
The DM355 is packaged in a 337-Pin Ball Grid Array (BGA).
