Outline Of The Product - Pioneer DVR-233-S Service Manual

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7.3 OUTLINE OF THE PRODUCT

Main newly developed technologies
1. Pickup
The pickup supports 16 times-speed recording for the DVD-R and
6 times-speed recording for DVD-RW.
A new liquid-crystal tilt servo system is adopted for the pickup.
2. Recording-signal-processing LSI
• UPD63641GC (DRIVE Assy: IC201)
The recording-signal-processing module of conventional models
have outside CPU, but this has been integrated into a single newly
developed recording-signal-processing LSI, enabling stable
performance and cost reduction.
System configuration
In each signal-processing LSI of the main function blocks,
various processes have been integrated into one chip, which
enables simpler system configuration. With the AV-signal-
processing LSI at the center, video inputs/outputs, audio
inputs/outputs and various memory cells are connected to it.
IC1102
Flash
IC1201, IC1202
DDR SDRAM
Drive Assy
(DVD-R/RW)
[Memorized Data]
• FLASH ROM (IC1102 MAIN ASSY)
The storing area of a program code and setting information
The backup data of Tuner information and user setting
• CPU SDRAM (IC1201, IC1202 MAIN ASSY)
The execution area and working area of a program
An overall memory for system assuring 32 bit width
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IC1001
AV Signal
Playback
Processing
LSI
Record
Fig1. System configuration
DVR-231-S
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Video : IC402 MM1657XJBE
Audio : IC601 BD3823FV
IC3101
Audio A/D
Tuner / Line
PCM1802
Select
IC101
Tuner / FL
Control
CPU
IC3201
Audio D/A
PCM1742KE
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A
B
C
FL
D
Analog Audio
DIF
E
F
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