Sanyo Xacti VPC-C40, Руководство по обслуживанию

Страница: 8 / 34

– 8 –
41~44 SCAN OUT3~0
O
See next page
→
1-5. SY1 CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SY1 circuit, refer to the block diagram. The SY1 circuit 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
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
24
26
27
28
29
30
31
32
33
34
35
36
37
39
45
38
40
SCK
CARD
BACKUP_CTL
BAT_CHG ON
HOT_L2
NOT USED
LCD_PWM
NOT USED
VDD2
VF. LED (R)
VF. LED (G)
TH ON
BAT_CHG_CNT
BL ON
LENS_4M
MAIN RESET
LCD ON2
USB_DET
DC_IN
AV JACK
BOOT_COMREQ
PRG ENA/DATA1
AVREF ON
SCAN IN5
SCAN IN4
SCAN IN3
SCAN IN2
SCAN IN1
SCAN IN0
VSS3
VDD3
RDSEL
CLK (SFW)
DATA0 (SFW)
P ON
CHGERR
I/O
O
I
O
O
I
-
O
-
-
O
O
O
O
O
O
O
O
I
I
I
I
I
O
I
I
I
I
I
I
-
-
I
O
O
O
I
Outline
Serial clock output
Card detection
Backup battery charge control
Camera battery charge prohibition/permission
Hot line request from ASIC
-
LCD backlight brightness adjustment
VDD
Red LED (H= lighting)
Green LED (H= lighting)
Battery temperature & card detection power control
Camera charge electric current control
LCD backlight ON/OFF signal
Lens driver IC standard clock output
System reset (MRST)
D/D converter (LCD system) ON/OFF signal
USB power detection terminal (L= detection)
AV JACK detection
Command request input (combine with BOOT output)
Flash rewrite select terminal
AD VREF ON/OFF signal
Key matrix input
Key matrix input
Key matrix input
Key matrix input
Key matrix input
Key matrix input
GND
VDD
Select terminal for on-tip debugger
Flash rewrite (combine with ROM debugger)
Flash rewrite (combine with ROM debugger)
D/D converter (digital system) ON/OFF signal
Key matrix output
Camera charge error detection
DC jack detection
10
VSS2 - GND
21 LCD ON1
O
D/D converter (LCD system) ON/OFF signal
22 PLLEN
O
PLL oscillation ON/OFF
23 TRST
O
Use LEDA3 when starting
-
25 ST_CHG ON O Strobo charge control