Sanyo VPC-WH1W Service Manual page 8

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
Pin Signal
1 ASIC_SCK
2 ZCARD
ZBACKUPCTL
3
4 CHG_CNT
5 HOT LINE
6 GREEN_LED
RED_LED
7
8 ST_CHG_ON
9 VDD2
10
VSS2
11~14 SCAN IN4~1
15 ZUSB_DET
16 HDMI_HPD
17 ZCHG_DONE
18 TIMEOUT
19
BAT_UTX
20 BAT_URX
21 SCAN_IN0
22 PANEL_OPEN
23 KEY 2nd
24 USB_ON
25 SUB_REC
26
NOT USED
27 MRST
28 SW3.2ON
29 PON2
30 NOT USED
31 P ON
32 NAND_RESET
33 PLLEN
34
ERR
35 VSS3
36
VDD3
37 RDSEL
38
CLK (SFW)
39 DATA0 (SFW)
40 DC_IN
41 HINGE
42~44
SCAN OUT2~0
45 ZOOM_SW_AD
46 NOT USED
47
ZAV_JACK
I/O
O Serial clock output (CL required)
Card detection (SW3.2 V required)
I
O Backup battery charge control
O Camera charge permission
I Hot line request from ASIC
O Switch unit LED (green) (H= lighting)
O Switch unit LED (red) (H= lighting)/ combine with UTX (CL required)
O Strobo charge control (H= charge)
-
-
- -
I
Keyscan input 4~1
I USB power detection terminal (L= detection)
HDMI hot plug detection
I
I Main condensor charge voltage detection
Charge done detection
I
O Battery power detection IC UART sending
Battery power detection IC UART recieving
I
I Keyscan input 0
I Panel open detection (MR sensor)
S2 key input
I
USB charge ON/OFF
O
I SUB REC key input
O (TGVD delete)
System reset (MRST)
O
SW 3.2 V power (L= 3.2 V)
O
O Digital system power start-up signal
I (I2CSDATA delete)
O Digital system power start-up signal
O OneNAND reset
O PLL enable signal
Charge error detection
I
- -
- -
Debugger select terminal
I
Debug CN
I
Debug CN
I
I
DC jack insertion detection (SW3.2 V required)
I
Panel rotation detection
Keyscan output 2~0
O
Zoom key AD input
I
-
-
I Cable detection
– 8 –
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