Overview
The TMS320DM6446ZWT, part of the TMS320DM644x series, is a highly integrated Digital Media System-on-Chip (DMSoC) developed by Texas Instruments. This SoC leverages TI’s DaVinci™ technology to meet the processing needs of next-generation embedded devices, particularly in networked media encode and decode applications. The DM6446 features a dual-core architecture, combining a high-performance TMS320C64x+™ DSP core with an ARM926EJ-S core, providing the benefits of both DSP and Reduced Instruction Set Computer (RISC) technologies. This architecture supports robust operating systems, rich user interfaces, high processing performance, and long battery life, making it ideal for various digital media applications.
Key Specifications
| Specification | Details |
|---|---|
| Number of Cores | 2 (TMS320C64x+™ DSP core and ARM926EJ-S core) |
| Maximum Clock Frequency | 513 MHz, 594 MHz, 810 MHz (C64x+™), 256.5 MHz, 297 MHz, 405 MHz (ARM926EJ-S™) |
| Memory Architecture | 32K-Byte L1P Program RAM/Cache, 80K-Byte L1D Data RAM/Cache, 64K-Byte L2 Unified Mapped RAM/Cache |
| External Memory Interfaces | DDR2 SDRAM Memory Controller (32-bit bus width), Asynchronous EMIF (EMIFA) for NOR and NAND flash, Compact Flash, MMC/SD with SDIO |
| Peripherals | 10/100 Mb/s Ethernet MAC, USB 2.0 High-/Full-/Low-Speed, Audio Serial Port (ASP), I2S, AC97 Audio Codec Interface, VLYNQ™ Interface, Host Port Interface (HPI) |
| Package | 361-Pin Pb-Free BGA Package (NFBGA-361) |
| Power and Voltage | 3.3-V and 1.8-V I/O, 1.2-V internal (for 513 and 594 MHz versions), 3.3-V and 1.8-V I/O, 1.2-V DAC and USB, 1.3-V internal (for 810 MHz version) |
Key Features
- Dual-Core Architecture: Combines a TMS320C64x+™ DSP core and an ARM926EJ-S core for high-performance processing and flexibility.
- Advanced Memory Architecture: Includes 32K-Byte L1P Program RAM/Cache, 80K-Byte L1D Data RAM/Cache, and 64K-Byte L2 Unified Mapped RAM/Cache.
- Video Processing Subsystem (VPSS): Features two configurable video/imaging peripherals: Video Processing Front-End (VPFE) and Video Processing Back-End (VPBE) with an imaging co-processor (VICP).
- High-Speed Interfaces: Supports 10/100 Mb/s Ethernet MAC, USB 2.0 High-/Full-/Low-Speed, and various audio and video interfaces.
- Power Management: Individual power-saving modes for ARM/DSP cores and flexible PLL clock generators.
- Enhanced Direct-Memory-Access (EDMA3) Controller: With 64 independent channels for efficient data transfer.
Applications
- Digital Media Devices: Ideal for videophones, digital still cameras, streaming media devices, and portable media devices such as security netcams and DVRs.
- Automotive Infotainment: Suitable for advanced automotive infotainment systems.
- Set-Top Boxes and Media Players: Used in advanced set-top boxes and other media player devices.
- Video Imaging and Networked Media: Supports networked media encode and decode applications, including video imaging and processing.
Q & A
- What is the TMS320DM6446ZWT?
The TMS320DM6446ZWT is a Digital Media System-on-Chip (DMSoC) developed by Texas Instruments, featuring a dual-core architecture with a TMS320C64x+™ DSP core and an ARM926EJ-S core.
- What are the clock frequencies of the TMS320DM6446ZWT?
The clock frequencies are 513 MHz, 594 MHz, and 810 MHz for the C64x+™ DSP core, and 256.5 MHz, 297 MHz, and 405 MHz for the ARM926EJ-S core.
- What type of memory architecture does the TMS320DM6446ZWT have?
The device features 32K-Byte L1P Program RAM/Cache, 80K-Byte L1D Data RAM/Cache, and 64K-Byte L2 Unified Mapped RAM/Cache.
- What are the key peripherals supported by the TMS320DM6446ZWT?
The device supports 10/100 Mb/s Ethernet MAC, USB 2.0 High-/Full-/Low-Speed, Audio Serial Port (ASP), I2S, AC97 Audio Codec Interface, and VLYNQ™ Interface among others.
- What is the package type of the TMS320DM6446ZWT?
The device is packaged in a 361-Pin Pb-Free BGA Package (NFBGA-361).
- What are the typical applications of the TMS320DM6446ZWT?
It is used in digital media devices, automotive infotainment systems, set-top boxes, and networked media encode and decode applications.
- Does the TMS320DM6446ZWT support video processing?
Yes, it features a Video Processing Subsystem (VPSS) with configurable video/imaging peripherals: Video Processing Front-End (VPFE) and Video Processing Back-End (VPBE) with an imaging co-processor (VICP).
- What is the EDMA3 controller and its role in the TMS320DM6446ZWT?
The EDMA3 controller has 64 independent channels for efficient data transfer, enhancing the overall system performance.
- Is the TMS320DM6446ZWT still in production?
No, the TMS320DM6446ZWT is obsolete and no longer manufactured.
- What are the power management features of the TMS320DM6446ZWT?
The device has individual power-saving modes for ARM/DSP cores and flexible PLL clock generators.
