Nikon COOLPIX S210 Repair Manual page 86

1-4. SYA CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SYA block diagram, refer to the block diagram. The SYA block centers around a 8-bit micropro-
cessor (IC301), and controls camera system condition (mode). The 8-bit microprocessor handles the following functions.
1. Operation key input, 2. backup and clock control in case of no battery, 3. Power ON/OFF control, 4. Storobe condensor charge
control, 5. Card, USB and AV jack detection, 6. LED lighting control.
Signal
Pin
1 SCK
2 AV JACK
NOT USED
3
4 NOT USED
HSCON
5
6 BEEP
LCD PWM
7
8 PW_LED (G)
9 VDD2
10 VSS2
11 SELF_LED (R)
12 BACK_LED (R)
13
MAIN RESET
14 NAND RESET
15
SCAN IN0
16 SCAN IN1
17 PW_ON
18 PLAY
19
UTX
20 NOT USED
21 WIDE
22 TELE
23 NOT USED
24 NOT USED
25
OK
26 SHUTTER 1st
27 P ON
28 PLLEN
29 USB_CNT
30
SCAN IN3
31 SCAN IN2
32 SCAN OUT2
33 SCAN OUT1
34
SCAN OUT0
35 VSS3
36
VDD3
37 (DBGP2)
(DBGP1/CLK)
38
(DBGP0/DATA0)
39
NOT USED
40
41 NOT USED
CARD
42
43
CARD ON
I/O
O Serial clock
I AV JACK detection
- -
-
-
Gyro sensor high speed charge signal
O
O Buzzer
LCD backlight brightness current control
O
O Power LED ON/OFF control
- VDD2
- VSS2
O Self timer LED ON/OFF control
O Back LED (red) ON/OFF control
O System reset
O OneNAND reset
I
Keymatrix input
Keymatrix input
I
POWER key detection
I
I PLAY key detection
Debugger
O
-
-
ZOOM WIDE key detection
I
ZOOM TELE key detection
I
-
-
- -
I OK key detection
I Shutter 1st detection
O D/D converter (digital system) ON/OFF signal
O PLL oscillation ON/OFF control
I USB insertion detection
Keymatrix input
I
Keymatrix input
I
O
Keymatrix output
O Keymatrix output
O Keymatrix output
VSS3
-
- VDD3
Terminal for on-tip debugger
-
Terminal for on-tip debugger
-
- Terminal for on-tip debugger
- -
-
-
I SD card detection
O Card part pull-up power
– 7 –
- E ･ S20 -
INC
VMA22024-R.3749.A
Outline