Sanyo VPC-HD2 Service Manual page 10

50 BAT_TEMP
51 COMREQ
52
BAT_OFF
53 SREQ
54
SCAN IN6
55 IR_IN
56
RESET
57
XCIN
58 XCOUT
59
VSS1
60 XIN
61
XOUT
62 VDD1
63
BATTERY
64
CHG_DONE
65
INT_TEMP
66
SO
67
SI
68
NOT USED
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
← LEFT
0
1 TELE
2
HD/SD
3
SENSITIVITY
I Lithium battery temperature detection
Command request input
I
I Battery OFF detection signal input (L= OFF detection)
Serial communication request signal (interruption)
I
I Keyscan input 6
I Infrared remote control communication data input
I
Reset input power monitoring
I
Clock (32.768 kHz)
O Clock (32.768 kHz)
Power -
I
Clock (4MHz)
O Clock (4MHz)
Power Backup 3.2 V
I UNREG_SY voltage mesurement input
I Main condensor charging voltage detection (H= done)
I Main substrate temperature measurement input
O Serial data output
I Serial data input
-
-
Table 5-1. 8-bit Microprocessor Port Specification
ASIC RESET
S. REQ
ASIC SO
ASIC SI
ASIC SCK
MRST
Fig. 5-1 Internal Bus Communication System
2
1
→ RIGHT ↑ UP
REC
WIDE
LCD
-
ROTATION
TEST STROBO
Table 5-2. Key Operation
– 10 –
4
3
↓ DOWN
SET
SHUTTER 1st SHUTTER 2nd
- -
- -
ASIC
6
5
CAMERA
PLAY
MENU SPEED UP
- POWER ON
- PANEL OPEN