Overview
The TMS320DM355DZCE135, 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 core, which operates at frequencies up to 270 MHz. It is optimized for portable digital video solutions, offering high picture quality, low power consumption, and a flexible interface to support various external devices such as CCD and CMOS sensors, memory types, and other peripherals.
The DM355 combines high-performance MPEG4 HD (720p) and JPEG codecs, supporting up to 50 million pixels per second. It also features an on-chip ARM ROM bootloader, enhanced direct-memory-access (EDMA) controller, and configurable power-saving modes, making it an ideal choice for digital still cameras, digital photo frames, IP security cameras, and other low-cost portable digital video applications.
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 |
| GPIO Pins | Up to 104 pins |
| Timers | Three 64-bit general-purpose timers, one 64-bit watchdog timer |
| UARTs | Three UARTs with hardware handshaking support on one UART |
| SPI Interfaces | Three SPI interfaces |
| PWM Outputs | Four PWM outputs |
| RTO Outputs | Four RTO outputs |
| MMC/SD Interfaces | Two MMC/SD/SDIO interfaces |
| USB Interface | USB 2.0 full and high-speed device and host interface |
| Package Type | 337-Pin BGA (ZCE) |
| Process Technology | 90 nm |
Key Features
- ARM Jazelle Technology and EmbeddedICE-RT Logic: Supports real-time debugging and high-performance digital media processing.
- MPEG4/JPEG Coprocessor: Supports up to 720p MPEG4 SP and up to 50 million pixels per second JPEG.
- Video Processing Subsystem (VPSS): Includes hardware IPIPE for real-time image processing.
- Flexible Memory Interfaces: Supports DDR2/mDDR, NAND, OneNAND, and other memory types.
- Enhanced Direct-Memory-Access (EDMA) Controller: Features 64 independent channels.
- Configurable Power-Saving Modes: Optimized for low power consumption.
- USB 2.0 Interface: Full and high-speed device and host interface.
- Wireless Interfaces: Supports Bluetooth, WLAN, and WUSB through SDIO.
- General-Purpose I/O (GPIO) Pins: Up to 104 pins with programmable interrupt/event generation modes.
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.
- 4-Channel Digital Video Recorders: Multi-channel video recording and playback.
- Video Door Bell Applications: Integrated video and audio for smart doorbells.
- Other Portable Digital Video Applications: Flexible platform for various low-cost portable video solutions.
Q & A
- What is the processor core of the TMS320DM355?
The processor core is the ARM926EJ-S RISC processor.
- What are the maximum operating frequencies of the TMS320DM355?
The maximum operating frequencies are up to 270 MHz.
- What types of memory interfaces does the TMS320DM355 support?
The chip supports DDR2/mDDR, Asynchronous EMIF (AEMIF), NAND, and OneNAND memory interfaces.
- What is the role of the Video Processing Subsystem (VPSS) in the TMS320DM355?
The VPSS includes hardware IPIPE for real-time image processing and supports MPEG4 and JPEG codecs.
- How many GPIO pins does the TMS320DM355 have?
The chip has up to 104 GPIO pins with programmable interrupt/event generation modes.
- What wireless interfaces are supported through SDIO?
The chip supports Bluetooth, WLAN, and WUSB through SDIO.
- What is the package type and pin count of the TMS320DM355?
The package type is a 337-Pin BGA (ZCE).
- What process technology is used in the TMS320DM355?
The process technology is 90 nm.
- What are some of the key applications of the TMS320DM355?
Key applications include digital still cameras, digital photo frames, IP security cameras, and 4-channel digital video recorders.
- Does the TMS320DM355 support power-saving modes?
Yes, the chip features configurable power-saving modes to optimize power consumption.
