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49
BR OPEN
50
BR CLOSE
51
CARD
52
BUZZER
53
SCAN IN 4
54
SCAN OUT 4
55
WAKE UP
56
SYMUTE
57
USB
58
NOT USED
59
NOT USED
60
NOT USED
61
NOT USED
62
ASIC TEST 1
63
ASIC TEST 2
64
ASIC RESET
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, ASIC and SPARC lite 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
TELE
2
MODE
STILL IMAGE
3
4
-
O
Barrier open control
O
Barrier close control
I
CF card insertion detection
O
Buzzer beep tone output
I
Key scan input 4
O
Key scan output 4
I
-
O
Audio mute control
I
USB connector detection
-
-
-
-
-
-
-
-
O
ASIC reset control signal 1
O
ASIC reset control signal 2
O
ASIC reset singal
Table 4-1. 8-bit Microprocessor Port Specification
ASIC RESET
S. REQ
ASIC SO
ASIC SI
ASIC SCK
ASIC TEST 1
ASIC TEST 2
Fig. 4-1 Internal Bus Communication System
1
2
↑ UP
→ RIGHT
WIDE
PLAY MODE
INFO
SET
SEQUENTIAL
VIDEO CLIP
SHOT
SHOOTING
-
-
Table 4-2. Key Operation
– 10 –
4
3
↓ DOWN
1st shutter
REC MODE
REC MODE
(LCD OFF)
(LCD ON)
FLASH MODE BARRIER OPEN
SET UP
PC MODE
-
-
H : Open
L : Close
L : Insertion
H : Pulse output
L : Mute
L : USB detecion
ASIC
5
2nd shutter
-
BARRIER
CLOSE
TEST
POWER ON
I
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