System Configuration - Pioneer DVR-220-S Service Manual

5

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, writer and various memory cells are
connected to it.
IC1102
Flash
IC1101, IC1201, IC1301
IC1401 SDRAM
Drive Assy
(DVD-R/RW)
[Memorized Data]
• EEPROM (IC204 JCKB ASSY)
The information about Tuner is backed up.
(Pre-set CH, AFT ON/OFF, Skip CH, etc)
Information about timed recording
Other information
(The state of Volume, remote control mode and
last positions (Line/Tuner, etc)
• CPU SDRAM (IC1101 MAIN ASSY)
The execution area and working area of a program
• FLASH ROM (IC1102 MAIN ASSY)
The storing area of a program code and setting information
• DEC SDRAM (IC1201 MAIN ASSY)
The working area of MPEG playback and OSD/Thumbnail
(OSD is mainly for Disc Menu creation in Video mode)
• ENC SDRAM (IC1301 MAIN ASSY)
The working area of MPEG recording and analog input and output (AVIO)
• ATA SDRAM (IC1401 MAIN ASSY)
The working area of ATA/OSD2/Audio TBC (OSD2 is for all GUI.)
5
6
IC1001
AV Signal
Playback
Processing
LSI
Record
Fig2. System configuration
DVR-220-S
6
7
Video : IC701 LA73033
Audio : IC601 LC75342M
IC3101
Audio A/D
Tuner / Line
AK5381VT
Select
IC202
Tuner / FL
Control
CPU
IC3201
Audio D/A
PCM1742KE
7
8
A
FL
CVBS/YC/YCbCr
C
Analog Audio
DIF
D
E
113
8
B
F