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84
RESET
85
BAT OFF
86
IR IN
87
SREQ
88
USB
89
JOG R
90
JOG L
91~94
SCAN OUT 0~3
95
LCD ON
96
ASIC TEST
97
ASIC RESET
98
ASIC TEST 1
99
AVSS
100
BATTERY
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 RISC CPU circuits.
8-bit
microprocessor
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
SCAN
IN
0
SCAN
OUT
LEFT
0
1
1st
2
STILL IMAGE
3
SET
I
Reset input
Battery OFF detection signal
I
I
Remote control signal input terminal
Serial communication request signal
I
USB connector connection detection signal
I
I
Jog right rotation
Jog left rotation
I
Key matrix output
O
O
LCD monitor power ON/OFF signal
ASIC reset control signal
O
O
ASIC reset signal
ASIC test signal
O
-
A/D converter GND power terminal
I
Battery voltage input (analog input)
Table 4-1. 8-bit Microprocessor Port Specification
Fig. 4-1 Internal Bus Communication System
1
2
UP
DOWN
EXE CUTE
2nd
SHOOTING
SEQUENTIAL
VIDEO CLIPS
SHOT
MODE
-
Table 4-2. Key Matrix table
ASIC TEST 1
ASIC TEST 0
S. REQ
ASIC SO
ASIC SI
ASIC SCK
RESET
4
3
f1
RIGHT
AE
AF
COMMUNICA-
OPT
TION
ZOOM TELE
-
– 18 –
L : OFF
L : Request
L : Connection
H : ON
L : Reset output
ASIC RISC CPU
1 CHIP CPU
5
6
f2
Auto/Manual
AWB
CAMERA
POWER
-
ZOOM WIDE
-
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