Overview
The TMS320DM355 is a highly integrated Digital Media System-on-Chip (DMSoC) designed by Texas Instruments. This chip is tailored for various digital media applications, including digital still cameras, digital photo frames, IP security cameras, and 4-channel digital video recorders. The DM355 combines high-performance MPEG4 HD (720p) and JPEG codecs with low power consumption, making it an ideal choice for portable digital video solutions.
The core of the DM355 is the ARM926EJ-S RISC processor, which operates at frequencies of up to 270 MHz. This processor supports 32-bit and 16-bit instruction sets and includes DSP instruction extensions. The chip also features a robust set of peripherals and interfaces to support a wide range of external devices.
Key Specifications
| Feature | Specification |
|---|---|
| Processor Core | ARM926EJ-S RISC processor |
| Operating Frequency | 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 Processing | MPEG4/JPEG Coprocessor, Up to 720p MPEG4 SP, Up to 50M Pixels per Second JPEG |
| 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 |
| External Memory Interfaces | DDR2/mDDR, AEMIF for NAND and OneNAND |
| USB Interface | USB 2.0 Full and High-Speed Device and Host |
| GPIO Pins | Up to 104 General-Purpose I/O (GPIO) Pins |
| Timers | Three 64-Bit General-Purpose Timers, One 64-Bit Watch Dog Timer |
Key Features
- ARM926EJ-S RISC Processor: Supports 32-bit and 16-bit instruction sets with DSP instruction extensions.
- High-Performance Video Processing: MPEG4/JPEG Coprocessor supporting up to 720p MPEG4 SP and up to 50M pixels per second JPEG.
- Memory and Storage: DDR2/mDDR, Asynchronous EMIF (AEMIF), NAND, OneNAND, and flash memory interfaces.
- Peripheral Set: Includes I2C, two audio serial ports (ASP), three UARTs, three SPI interfaces, four PWM outputs, four RTO outputs, and two MMC/SD interfaces.
- USB and Other Interfaces: USB 2.0 full and high-speed device and host interface, and support for Bluetooth, WLAN, WUSB through SDIO.
- Power Management: Configurable power-saving modes and enhanced direct-memory-access (EDMA) controller.
- Debug and Development Tools: EmbeddedICE-RT™ logic for real-time debug, IEEE-1149.1 (JTAG) boundary-scan-compatible, and ETB™ (Embedded Trace Buffer™) with 4K-Bytes trace buffer memory.
Applications
The TMS320DM355 is designed for a variety of digital media applications, including:
- Digital still cameras
- Digital photo frames
- IP security cameras
- 4-channel digital video recorders
- Video doorbell applications
- Other low-cost portable digital video applications
Its high-performance video processing capabilities and flexible interface options make it suitable for a wide range of portable video solutions.
Q & A
- What is the core processor of the TMS320DM355?
The core processor is the ARM926EJ-S RISC processor.
- What are the maximum operating frequencies of the ARM926EJ-S core?
The ARM926EJ-S core operates at frequencies of up to 270 MHz.
- What type of memory interfaces does the DM355 support?
The DM355 supports DDR2/mDDR, Asynchronous EMIF (AEMIF), NAND, OneNAND, and flash memory interfaces.
- What video processing capabilities does the DM355 have?
The DM355 features an MPEG4/JPEG Coprocessor supporting up to 720p MPEG4 SP and up to 50M pixels per second JPEG.
- How many GPIO pins does the DM355 have?
The DM355 has up to 104 General-Purpose I/O (GPIO) Pins.
- What USB capabilities does the DM355 offer?
The DM355 supports USB 2.0 full and high-speed device and host interfaces.
- What debug and development tools are available for the DM355?
The DM355 includes EmbeddedICE-RT™ logic for real-time debug, IEEE-1149.1 (JTAG) boundary-scan-compatible, and ETB™ (Embedded Trace Buffer™) with 4K-Bytes trace buffer memory.
- What are some common applications for the TMS320DM355?
Common applications include digital still cameras, digital photo frames, IP security cameras, 4-channel digital video recorders, and video doorbell applications.
- What is the package type and pin count 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 manufactured using 90 nm process technology.
