Sanyo VPC-C5 Service Manual page 9

46 NC
47
/CARD
48 /AVREF ON
49
PLLEN
50 /ASIC TEST
51~56
/SCAN IN 5~0
57
NC
58 /DC_IN
59
AV JACK
60 NC
61
BAT_TEMP
62 INT_TEMP
63
CHG_DONE
64
BATTERY
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
REC (MOV)
3 -
- -
I Card detection (L=card)
AD VREF ON/OFF signal (L=ON)
O
O ASIC PLL oscillation ON/OFF
O ASIC control signal (ZTEST)
I
Key scan input 5~0
I
GND
I DC adaptor connection detection (L=DC adaptor)
I AV JACK connection detection (H=AV JACK detection)
I
GND
I Battery temperature (analog)
I Internal temperature (analog)
I Strobo condensor charging completion
I Battery voltage detection (analog)
Table 5-1. 8-bit Microprocessor Port Specification
ASIC RESET
S. REQ
ASIC SO
ASIC SI
ASIC SCK
MRST
ZTEST
Fig. 5-1 Internal Bus Communication System
1 2
→ RIGHT ↑ UP
REC
WIDE
REC (CAM) PLAY
-
TEST
Table 5-2. Key Operation
– 9 –
4
3
↓ DOWN
SET
1st SHUTTER 2nd SHUTTER
- -
- -
ASIC
6
5
MENU
LCD LOTATION
CAMERA PLAY
- POWER ON
- PANEL OPEN