Sanyo VPC-J2, Руководство по обслуживанию

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/DC_IN
I
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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, 5. Signal input and output for
zoom and lens control.
Pin
Signal
1~3
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
23
30
32
33
34
35
36
37
38
39
40
41
42
43
45
44
46
/SCAN OUT 0~2
P ON
PA ON
/STILL_LED
/CSTILL_LED
VSS
VDD
/MOVIE_LED
/STBY_LED (GREEN)
/AVREF_ON
SI
SO
SCK
PRG SI
PRG SO
PRG SCK
LCD_ON
BLON
CHG ON
INT_TEMP
CHG VOL
BATTERY
AVREF
AVDD
/RESET
XCOUT
XCIN
IC
XOUT
XIN
VSS
/BAT OFF
/SREQ
/SCAN IN6
CLOSE
I/O
O
O
O
O
O
-
-
O
O
O
I
O
I/O
I
O
I/O
O
O
O
I
I
I
-
-
I
O
I
I
O
I
-
I
I
I
I
Outline
Key scan output
Digital power ON/OFF control H : ON
Analog power ON/OFF control H : ON
Still image mode LED (orange) control L : ON
Video clip mode LED (orange) control L : ON
GND
VDD
Stand-by LED (green) control L : ON
A/D converter standard voltage control L : ON
Receiving data (from ASIC)
Sending data (to ASIC)
Communication clock (to ASIC)
Flash memory writing receiving data
Flash memory writing sending data
Flash memory writing communication clock
LCD power ON/OFF control 1 H : ON
LCD backlight ON/OFF control H : ON
Internal temperature detection input (analog input)
Storobe charge voltage detection (analog input)
Battery voltage detection (analog input)
Analog standard voltage input terminal
A/D converter analog power terminal
Reset input
Clock oscillation terminal (37.768 kHz)
Clock oscillation terminal
Flash memory writing voltage
Main clock oscillation terminal (4MHz)
Main clock oscillation terminal
GND
Battery OFF detection
Serial communication requirement (from ASIC)
Key scan input 6
Lens barrier close detection switch input
DC jack/battery detection input
Flash charge control H : ON
13
/STBY_LED (RED)
O
Stand-by LED (red) control L : ON
24 VDD
- VDD
25 AVSS
- AVSS
26~29 SCAN IN 0~3 I
Key scan input
Video clip mode LED (orange) control L : ON
31 NOT USED -
-
4 /SCAN OUT 3 O Lens barrier open/close detection switch for scan output