The TMS320DM6443 (also referenced as DM6443) leverages TI's Davinci™
technology to meet the networked media encode and decode application processing
needs of next-generation embedded devices.
The DM6443 enables OEMs and ODMs to quickly bring to market devices featuring
robust operating systems support, rich user interfaces, high processing
performance, and long battery life through the maximum flexibility of a fully
integrated mixed processor solution.
The dual-core architecture of the DM6443 provides benefits of both DSP and
Reduced Instruction Set Computer (RISC) technologies, incorporating a
high-performance TMS320C64x+™ DSP core and an ARM926EJ-S MPU core.
The ARM926EJ-S is a 32-bit RISC processor core that performs 32-bit or 16-bit
instructions and processes 32-bit, 16-bit, or 8-bit data. The core uses
pipelining so that all parts of the processor and memory system can operate
The ARM core incorporates:
- A coprocessor 15 (CP15) and protection module
- Data and program Memory Management Units (MMUs) with table look-aside buffers.
- Separate 16K-byte instruction and 8K-byte data caches. Both are four-way associative with virtual index virtual tag (VIVT).
The TMS320C64x+™ DSPs are the highest-performance fixed-point DSP generation
in the TMS320C6000™ DSP platform. It is based on an enhanced version of the
second-generation high-performance, advanced very-long-instruction-word (VLIW)
architecture developed by Texas Instruments (TI), making these DSP cores an
excellent choice for digital media applications. The C64x is a code-compatible
member of the C6000™ DSP platform. The TMS320C64x+ DSP is an enhancement of the
C64x+ DSP with added functionality and an expanded instruction set.
Any reference to the C64x DSP or C64x CPU also applies, unless otherwise
noted, to the C64x+ DSP and C64x+ CPU, respectively.
With performance of up to 4752 million instructions per second (MIPS) at a
clock rate of 594 MHz, the C64x+ core offers solutions to high-performance DSP
programming challenges. The DSP core possesses the operational flexibility of
high-speed controllers and the numerical capability of array processors. The
C64x+ DSP core processor has 64 general-purpose registers of 32-bit word length
and eight highly independent functional units&151;two multipliers for a 32-bit
result and six arithmetic logic units (ALUs). The eight functional units include
instructions to accelerate the performance in video and imaging applications.
The DSP core can produce four 16-bit multiply-accumulates (MACs) per cycle for a
total of 2376 million MACs per second (MMACS), or eight 8-bit MACs per cycle for
a total of 4752 MMACS. For more details on the C64x+ DSP, see the
TMS320C64x/C64x+ DSP CPU and Instruction Set Reference Guide
(literature number SPRU732).
The DM6443 also has application-specific hardware logic, on-chip memory, and
additional on-chip peripherals similar to the other C6000 DSP platform devices.
The DM6443 core uses a two-level cache-based architecture. The Level 1 program
cache (L1P) is a 256K-bit direct mapped cache and the Level 1 data cache (L1D)
is a 640K-bit 2-way set-associative cache. The Level 2 memory/cache (L2)
consists of an 512K-bit memory space that is shared between program and data
space. L2 memory can be configured as mapped memory, cache, or combinations of
The peripheral set includes: 1 configurable video port; a 10/100 Mb/s
Ethernet MAC (EMAC) with a Management Data Input/Output (MDIO) module; an
inter-integrated circuit (I2C) Bus interface; one audio serial port (ASP); 2
64-bit general-purpose timers each configurable as 2 independent 32-bit timers;
1 64-bit watchdog timer; up to 71-pins of general-purpose input/output (GPIO)
with programmable interrupt/event generation modes, multiplexed with other
peripherals; 3 UARTs with hardware handshaking support on 1 UART; 3 pulse width
modulator (PWM) peripherals; and 2 external memory interfaces: an asynchronous
external memory interface (EMIFA) for slower memories/peripherals, and a higher
speed synchronous memory interface for DDR2.
The DM6443 includes a Video Processing Sub-System (VPSS) that has a
configurable Resizer and Video Processing Back-End (VPBE) output used for
The Resizer accepts image data for separate horizontal and vertical resizing
from 1/4x to 4x in increments of 256/N, where N is between 64 and 1024.
The Video Processing Back-End (VPBE) is comprised of an On-Screen Display
Engine (OSD) and a Video Encoder (VENC). The OSD engine is capable of handling 2
separate video windows and 2 separate OSD windows. Other configurations include
2 video windows, 1 OSD window, and 1 attribute window allowing up to 8 levels of
alpha blending. The VENC provides four analog DACs that run at 54 MHz, providing
a means for composite NTSC/PAL video, S-Video, and/or Component video output.
The VENC also provides up to 24 bits of digital output to interface to RGB888
devices. The digital output is capable of 8/16-bit BT.656 output and/or CCIR.601
with separate horizontal and vertical syncs.
The Ethernet Media Access Controller (EMAC) provides an efficient interface
between the DM644X MPU core processor and the network. The DM6443 EMAC support
both 10Base-T and 100Base-TX, or 10 Mbits/second (Mbps) and 100 Mbps in either
half- or full-duplex mode, with hardware flow control and quality of service
The Management Data Input/Output (MDIO) module continuously polls all 32 MDIO
addresses in order to enumerate all PHY devices in the system. Once a PHY
candidate has been selected by the MPU, the DIO module transparently monitors
its link state by reading the PHY status register. Link change events are stored
in the MDIO module and can optionally interrupt the MPU, allowing the MPU to
poll the link status of the device without continuously performing costly MDIO
The HPI, I2C, SPI, USB2.0, and VLYNQ ports allow DM6443 to easily control
peripheral devices and/or communicate with host processors. The DM6443 also
provides multimedia card support, MMC/SD, with SDIO support.
The rich peripheral set provides the ability to control external peripheral
devices and communicate with external processors. For details on each of the
peripherals, see the related sections later in this document and the associated
peripheral reference guides.
The DM6443 has a complete set of development tools for both the ARM and DSP.
These include C compilers, a DSP assembly optimizer to simplify programming and
scheduling, and a Windows™ debugger interface for visibility into source code
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