Sanyo VPC-HD2 Service Manual page 9

1-5. SYA CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SYA block, refer to the block diagram. The SYA 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 and backup, 3. Power ON/OFF, 4. Storobe charge control.
Signal
Pin
1 SCK
CARD
2
BACKUP CTL
3
4
CHG_CNT
5 HOT LINE
6 VF. LED (R)
NOT USED
7
NOT USED
8
9 VDD2
10
VSS2
CHG ON
11
12 LCD ON1
13
PON2
14 P ON
15
BL ON
16 LENS 4M
17 ZUSB_DET
18 MAIN RESET
19 VF. LED (G)
20 UTX
21 CAMERA. LED
22 BAT/LED
23 HDMI_INT
24 ZUSB_TRIG
25 TH_ON
26 BATCHGERR
27 LCD ON2
28
BATCHGCNT
29 SW3.2ON
30~33 SCAN IN5~2
34 POPUP SW1
35, 36 SCAN IN1, 0
37 VSS3
38 VDD3
39
RD SEL
40 (DBGP1/CLK)
41 (DBGP0/DATA0)
42 DC_IN
43~46 SCAN OUT3~0
47 BOOT
48 BAT_CHGI
49
AV_JACK
I/O
O Serial data clock
SD card detection (L= card)
I
O Backup battery charge control
O Camera battery charge prohibition/permission
Hot line from ASIC
I
O VF. LED (red) (H= lighting)
-
O
-
O
Power Backup 3.2 V
Power
GND
O
Strobo condensor charge control signal (H= charge)
O LCD power ON/OFF singal 3 vL (H= ON)
O D/D converter (1.8 V) ON/OFF control (H= ON)
O D/D converter (1.2 V/3.3 V) ON/OFF control (H= ON)
O
LCD backlight ON/OFF control (H= ON)
Lens driver IC standard CLK
O
USB power detection terminal (L= detection)
-
System reset output
O
VF. LED (green) (H= lighting)
O
Debugger terminal
I
Camera LED green (H= lighting)
O
LED red during charging (H= lighting)
O
I Cradle connection detection
Power ON/OFF triger from cradle
I
O Battery temperature measurement power ON/OFF control (L= ON)
I Camera battery charge error input
LCD power ON/OFF signal 12 vL (H= start up)
O
BAT CHG permission signal
O
O SW 3.2 V power (L= ON)
I Keyscan input 5~2
POP UP detection (L= detection)
I
Keyscan input 1, 0
I
GND
Power
Power
Backup 3.2 V
I System reservation terminal (on-tip debugger select terminal)
I System reservation terminal (on-tip debugger)
System reservation terminal (on-tip debugger)
I
I DC power connection detection input (L= detection)
Keyscan output 3~0
O
BOOT output
I
IC521 charge electric current monitoring
I
AV jack insertion detection (AD) (H= open/ M=composite/ L=D4 or component)
I
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