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Sanyo VPC-R1E Service Manual Page 9

Digital camera ac adaptor.
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2. Internal Communication Bus
The SY-A block carries out overall control of camera operation by detecting the input from the keyboard and the condition of the
camera circuits. The 8-bit microprocessor reads the signals from each sensor element as input data and outputs this data to the
camera circuits (ASIC) or to the LCD display device as operation mode setting data. Fig. 4-1 shows the internal communication
between the 8-bit microprocessor, ASIC and SPARC lite circuits.
8-bit
Microprocessor
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
SCAN
IN
SCAN
OUT
0
1
MAIN SW-PLAY POSITION
2
3
Fig. 4-1 Internal Bus Communication System
0
CF_IN
MAIN SW-LCD OFF
POSITION
DOWN
RIGHT
-
Table 4-2. Key Operation
RESET B
REQACK
SDATA
SDIR
SCK
EXT_IRQ1
1
TEST
SHUTTER 2nd
MAIN SW-LCD ON
POSITION
LEFT
SET
MODE
– 9 –
ASIC
2
3
SHUTTER 1st
COVER SW
UP
FOCUS SW

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