Formatter Board Circuit Description - Toshiba 13A21 Service Manual

4.3 Formatter Board Circuit Description

The HD5 SmoothPicture™ Single DDP1011 component set provides a highly integrated, high performance DLP solution,
which enables manufacturers to create 16:9 picture sizes, with high brightness rear projectors. When combined with
external video processing circuitry, the component set provides all the necessary electronics to process video/graphics input
signals, format input data for display on a DLP
The majority of the circuitry in the HD5 SmoothPicture™ Single DDP1011 reference design is high-speed digital, LVTTL.
High speed digital circuitry includes a single 30-bit input data interface, a SDRAM interface, a Direct Rambus_ memory
channel and a high speed LVDS DMD interface. The HD5 SmoothPicture™ Single DDP1011 reference design also
includes analog circuitry for color wheel motor drive, SmoothPicture™ actuator Control and DMD drive voltage
generation. Proper layout of the high-speed digital and analog circuits is critical to insure a working design.
4.3.1 DDP1011
The DDP1011 (IC9016) is an Application Specific Integrated Circuit (ASIC) intended for use in DLPTM (Digital Light
Processing Technology from Texas Instruments) system applications. The DDP1011 provides selected Video/Graphics
Processing, DMD Data Formatting, Real Time System Control (RSC), and ARM Micro-processor control. The DDP1011 is
designed to work in conjunction with a single 128Mbit or 256Mbit RDRAM™ (Direct RAMBUS(TM) DRAM) and an
associated Direct RAMBUS™ Clock Generator (DRCG) chip. For maximum flexibility, the DDP1011 micro-controller
operates entirely from a single external Flash device. This Flash provides micro-code, configuration parameters and PWM
sequences.
4.3.2 DMD
0.45 inch diagonal spatial light modulator of aluminum micro-mirrors. Display resolution is 1280 columns by 720 rows in a
device, and control some of the auxiliary functions of the projector system.
TM
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