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2. Internal Communication Bus
The SY1 circuit board 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 commu-
nication between the 8-bit microprocessor and ASIC.
8-bit
microprocessor
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
SCAN
IN
0
SCAN
OUT
0
LEFT
SEQUENTIAL
1
SHOT
POWER
2
ASIC RESET
ASIC SO
ASIC SCK
ASIC TEST 0
ASIC TEST 0
Fig. 4-1 Internal Bus Communication System
1
2
RIGHT
UP
SHOOTING
OPTION
VIDEO CLIPS
INFO
IMAGE
Table 4-2. Key Operation
S. REQ
ASIC SI
3
DOWN
STILL IMAGE
PLAY
ASIC
5
4
SET
MODE
SHUTTER 2nd
SHUTTER 1st
TEST
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