Sanyo Xacti VPC-A5, Руководство по обслуживанию

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2. Setting of external port and communication
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 and ASIC.
Table 5-1. 8-bit Microprocessor Port Specification
61
CHG VOL I
Main capacitor charging voltage detection
59
60
49
O
Serial communication requirement signal 50
SREQ
I
Clock oscillation terminal for clock (32.768 kHz)
55
BATTERY I Battery voltage detection
XCOUT
VDD1
-
VDD
57
58
BAT OFF
I Battery OFF detection signal input
XIN I
Main clock oscillation terminal (4 MHz)
XOUT O
Main clock oscillation terminal (4 MHz)
46~48
NOT USED - -
51 SCAN IN4 I Key matrix input
52 SCAN IN3 I Key matrix input
53
RESET
I
Microprocessor reset input
56 VSS1 - GND
Fig. 5-1 Internal Bus Communication System
54 XCIN I Clock oscillation terminal for clock (32.768 kHz)
62
TEMP
I
Temperature detection
63
SO
O Serial data output
64
SI
I Serial data input
8-bit
Microprocessor
ASIC
SREQ
SDO
SDI
SCK
RESET
PLL EN
CLKSEL0
ZTEST
3. Key Operation
For details of the key operation, refer to the instruction manual.
Table 5-2. Key Operation
0
1
2
0
1 2 3
SCAN
OUT
SCAN
IN
MENU
DOWN
TELE
RIGHT
REC
3
PW_TEST UP
4
WIDE
LEFT
TEST
ASS
LCD_ON/OFF
OK
1st 2nd PLAY
MOVIE
PW_ON
-
-