– 9 –
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
-
S1 key input
54
KEY_1st
I
GND
59
BATCHGERR
I
BAT CHG ERR input
VSS1
BATTERY
I
Battery voltage detection
61
62
SREQ
I
Serial communication request signal
XOUT
O
Clock (4MHz)
VDD1
Power
Power
51
COMREQ
I
COMREQ input
52
BAT_OFF
I
Battery OFF detection signal input
55
IR_IN
I
Remote control signal input
56
#RESET
I
Reset input (power monitoring)
57
XCIN
I
Clock (32.768 kHz)
58
XCOUT
O
Clock (32.768 kHz)
60
XIN
I
Clock (4MHz)
1
2
0
1
2
3
SCAN
OUT
SCAN
IN
LEFT
VREC
DOWN
FULL AUTO
UP
3
4
SET
SPEED_UP
RIGHT
WIDE
TELE
5
CAMERA
MENU
6
PLAY
-
POWER ON
0
8-bit
Microprocessor
ASIC
S. REQ
ASIC SO
ASIC SI
ASIC SCK
PLLEN
MRST
LCD TURN
MENU NORM
MENU SMPL
TEST
POP UP
-
-
-
-
-
-
-
50
BAT_TMP
I
Battery temperature detection
Serial data output
Camera temperature detection
65
INT_TEMP
I
66
SO
O
67
SI
I
68
DC_ON2
O
Serial data input
Camera feed ON
