Sanyo VPC-CG10EXBK, Service Manual

Page: 8 / 58

-
8
-
See next page
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
ASIC_SCK
PON2
NOT USED
POW_TEST
HOT LINE
TEST
NOT USED
LCDPWM
VDD2
ST_CHG
ZCHGDONE
ONENAND RESET
ZBACKUPCTL
KEY_PLAY
GREEN_LED
MRST
UTX
NOT_USED
KEY_VREC
KEY_POWER
ZBOOT_COMREQ
KEY_WIDE
KEY_TEL
NOT USED
VSS3
VDD3
RDSEL
CLK (SFW)
DATA0 (SFW)
P ON
I/O
Outline
Serial data clock output
Power test mode (L= starting up test mode)
Hot line request from ASIC
Test mode terminal (L= starting up test mode)
-
-
Strobe charge control (H= charge)
Main condensor charge voltage detection
OneNAND flash reset (L= reset)
Backup circuit (L=ON)
Key detection PLAY (L= detection)
ASIC reset (L=reset)
Debugger CN
Key detection VREC (L= detection)
Key detection POWER (L= detection)
ZBOOT output and COMREQ input (L=BOOT)
Key detection WIDE (L= detection)
Key detection TEL (L= detection)
-
-
-
Debugger terminal
Debugger terminal
Debugger terminal
D/D converter 1.2 V/3 V ON/OFF signal (H= ON)
-
VSS2 -
MR Panel open/close detection (H= panel open)
KEY_MENU Key detection MENU (L= detection)
LCD backlight brightness control
KEY_1st Key detection 1st SHUTTER (L= detection)
KEY_SET Key detection SET (L= detection)
KEY_UP Key detection UP (L= detection)
KEY_DOWN Key detection DOWN (L= detection)
KEY_LEFT Key detection LEFT (L= detection)
KEY_RIGHT Key detection RIGHT (L= detection)
NOT USED -
SW3.2ON SW 3.2 power ON/OFF signal (L= ON)
O
O
-
I
I
I
-
O
-
-
O
I
O
O
I
O
O
I
O
-
I
I
I
I
I
I/O
I
I
I
I
I
I
I
-
-
-
-
-
-
O
-
O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
D/D converter 1.8 V ON/OFF signal (H= ON)
-
Green LED (H= lighting)
RED_LED
Red LED (H= lighting)