Sanyo VPC-HD800GXBK Service Manual page 9

50 BAT_T
51 COMREQ
52
BAT_OFF
53 SREQ
54
KEY_1st
55 IR_IN
56
#RESET
57
XCIN
58 XCOUT
59
VSS1
60 XIN
61
XOUT
62 VDD1
63
BATTERY
64
BAT+
65
INT_TEMP
66
SO
67
SI
68
DC_ON2
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.
8-bit
Microprocessor
3. Key Operaiton
For details of the key operation, refer to the instruction manual.
SCAN
SCAN
0
IN
OUT
0 LEFT
1 TELE
2
MENU NORM
3 -
I Battery temperature detection
COMREQ input
I
I Battery OFF detection signal input
Serial communication request signal
I
I S1 key input
I Remote control signal input
I
Reset input power monitoring
I
Clock (32.768 kHz)
O Clock (32.768 kHz)
Power GND
I
Clock (4MHz)
O Clock (4MHz)
Power Power
I UNREG voltage detection
I Battery voltage detection
I Camera temperature detection
O Serial data output
I Serial data input
O
Camera feed ON
Table 5-1. 8-bit Microprocessor Port Specification
PLLEN
S. REQ
ASIC SO
ASIC SI
ASIC SCK
MRST
Fig. 5-1 Internal Bus Communication System
2
1
RIGHT UP
VREC
WIDE
MENU SMPL
HINJI
PW_TEST -
Table 5-2. Key Operation
– 9 –
4
3
DOWN SET
FULL AUTO -
- -
- -
ASIC
6
5
PLAY
CAMERA
MENU -
-
-
- POWER ON