TMS320DM335_1 Datasheet, PDF (3/158 Pages) Texas Instruments – Digital Media System-on-Chip (DMSoC)

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TMS320DM335
Digital Media System-on-Chip (DMSoC)
SPRS528A – JULY 2008 – REVISED AUGUST 2008
1.2 Description
The DM335 processor is a low-cost, low-power processor providing advanced graphical user interface for
display applications that do not require video compression and decompression. Coupled with a video
processing subsystem (VPSS) that provides 720p display, the DM335 processor is powered by a
135/216/270 MHz ARM926EJ-S core so developers can create feature rich graphical user interfaces
allowing customers to interact with their portable, electronic devices such as video-enabled universal
remote controls, Internet radio, e-books, video doorbells and digital telescopes. The new DM335 is packed
with the same peripherals as its predecessor, the TMS320DM355 device, including high speed USB 2.0
on-the-go, external memory interface (EMIF), mobile DDR/DDR2, two SDIO ports, three UART Ports, two
Audio Serial Ports, three SPI Ports, and SLC/MCL NAND Flash memory support. These peripherals help
customers create DM355 processor-based designs that add video and audio excitement to a wide range
of today's static user-interface applications while keeping silicon costs and power consumption low. The
new digital media processor is completely scalable with the DM355 processor and Digital Video Evaluation
Board (DVEVM), allowing customers to utilize their same code for their new DM335 processor focused
designs.
The new DM335 device delivers a sophisticated suite of capabilities allowing for flexible image capture
and display. Through its user interface technology, such as a four-level on-screen display, developers are
able to create picture-within-picture and video-within-video as well as innovative graphic user interfaces.
This is especially important for portable products that require the use of button or touch screen, such as
portable karaoke, video surveillance and electronic gaming applications. Additional advanced capture and
imaging technologies include support for CCD/CMOS image sensors, resize capability and video
stabilization. The 1280-by-960-pixel digital LCD connection runs on a 75-MHz pixel clock and supports TV
composite output for increased expandability. This highly integrated device is packaged in a 13 x 13 mm,
337 pin , 0.65 mm pitch BGA package.
The DM335 processor core is an ARM926EJ-S RISC processor. The ARM926EJ-S is a 32-bit processor
core that performs 32-bit and 16-bit instructions and processes 32-bit, 16-bit, and 8-bit data. The core
uses pipelining so that all parts of the processor and memory system can operate continuously. 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 DM335 device has a Video Processing Subsystem (VPSS) with two configurable video/imaging
peripherals:
• A Video Processing Front-End (VPFE)
• A Video Processing Back-End (VPBE)
The VPFE port provides an interface for CCD/CMOS imager modules and video decoders. The VPBE
provides hardware On Screen Display (OSD) support and composite NTSC/PAL and digital LCD output.
The DM335 peripheral set includes:
• An inter-integrated circuit (I2C) Bus interface
• Two audio serial ports (ASP)
• Three 64-bit general-purpose timers each configurable as two independent 32-bit timers
• A 64-bit watchdog timer
• Up to 104-pins of general-purpose input/output (GPIO) with programmable interrupt/event generation
modes, multiplexed with other peripherals
• Three UARTs with hardware handshaking support on one UART
• Three serial port Interfaces (SPI)
• Four pulse width modulator (PWM) peripherals
• Four real time out (RTO) outputs
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