– 10 –
Fig. 5-1 Internal Bus Communication System
Table 5-2. Key Operation
2. Internal Communication Bus
The SYA 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. 5-1 shows the internal communication
between the 8-bit microprocessor, ASIC and SPARC lite circuits.
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
Table 5-1. 8-bit Microprocessor Port Specification
63
64
53
-
Clock (32.768 KHz)
54
XCIN
I
Backup 3.2 V
59
ASIC SO
I
Serial data input to ASIC
VDD1
ASIC SI
O
Serial data output to ASIC
61
62
RESET
I
Reset input
CHG_DONE
I
Strobo condensor charging completion signal input (H= charging completion)
INT_TEMP
I
Substrate temperature measurement input around ASIC (AD convertion input)
51
SCAN IN6
I
Keyscan input 6
52
IR_IN
I
Cradle infrared remote control transmission data (asynchronous) input
55
XCOUT
O
Clock
56
VSS1
-
GND
57
XIN
I
Main clock (4MHz)
58
XOUT
O
Main clock
60
BATTERY
I
UNREG SY voltage measurement input
1
2
0
1
2
3
SCAN
OUT
SCAN
IN
←
LEFT
REC
↓
DOWN
1st SHUTTER
↑
UP
3
4
SET
2nd SHUTTER
→
RIGHT
WIDE
TELE
5
MENU
CAMERA
6
LCD LOTATION
PLAY
POWER ON
PANEL OPEN
0
8-bit
Microprocessor
ASIC
S. REQ
ASIC SO
ASIC SI
ASIC SCK
ASIC RESET
MRST
PLAY
-
-
TEST
-
-
-
-
-
-
-
-
