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Sanyo VPC-R1E Service Manual page 8

Digital camera ac adaptor
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1-5. SY-A CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SY-A block, refer to the block diagram. The SY-A block centers around a 8-bit microprocessor
(IC301), and controls camera system condition (mode).
The 8-bit microprocessor handles the following functions.
1. Operation key input, 2. Clock control, 3. Power ON/OFF, 4. Strobe charge control.
Pin
Signal
1~2
NOT USED
AVSS
3
AVR
4
5
AVCC
VDD3
6
7
UNREG (S)
VDD3
8
9
STROBO_V
10~12
P54~P56
13
VSS
DC_IN
14
15~16
X1, X0
17~18
MOD1, 0
19
P. ST.
20~23
S10~S13
24
P04
25~26
P05~P06
27
PLL_EN
28
USB_CNT
29
REQACK
30
SDIR
31
BAT_OFF
32
+3.2_SW
33
RESET B
34
P ON
35~36
NOT USED
37
VF_LED_G
38
EXT_IRQ1
39~40
SDATA
41
SCLK
42
SELF_LED_R
43
NOT USED
44~45
X0A, X1A
46
BUZZER
47
CHARGE
48~52
NOT USED
VCC
53
54~74
NOT USED
75~78
SO0~SO3
79~80
NOT USED
I/O
-
-
GND
-
-
Analog power
-
Analog power
Main (ASIC system) power detection
I
I
Battery power input (analog input)
Main (ASIC system) power detection
I
I
Strobo charge voltage input (analog input)
I
Connect to GND through register
-
GND
I
AC adaptor connection detection (analog input)
-
Main clock oscillation terminal (4 MHz)
Connect to GND
I
I
Reset input
I
Key matrix input
Connect to GND through register
I
Connect to GND through register
I
O
ASIC PLL permission signal
USB connection detection
I
Serial communication control signal
I
Serial communication control signal
O
Battery OFF detection
I
3.2 V power (switch)
O
Reset output to ASIC
O
O
DC/DC converter (analog) ON/OFF signal
-
-
O
VF LED (green) ON/OFF signal
O
External interruption signal
Serial communication control signal
I/O
O
Serial communication control signal
Self LED (red) ON/OFF signal
O
-
-
-
Sub clock oscillation terminal (32.768 kHz)
O
Buzzer output terminal
O
Strobo charge ON/OFF signal
-
-
Digital power
-
-
-
Key matrix output
O
-
-
Table 4-1. 8-bit Microprocessor Port Specification
– 8 –
Outline
H : Connection
H : OFF
L : Reset
H : ON
L : Light
L : Light
L : ON

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