Sanyo VPC-S60 Service Manual page 9

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
BATT_OFF
1
2 SW_3.2 V ON
NOT USED
3
4
NOT USED
5 CTRL
6
RESET
XCOUT
7
8 XCIN
9 FLMD0
10 XOUT
11
XIN
12 REGC
13 VSS
14 EVSS
15
VDD
16 EVDD
17 MRST
TRST
18
19
T SEN LED
20 SELF_LED
21 NOT USED
22 COMREQ
23 HOT LINE
24 PLLEN
25 SCAN IN 4
26 SCAN IN 3
27 SCAN IN 2
28 SCAN IN 1
29 SCAN IN 0
30 P ON
31 NAND_RESET
32
USB CONNECT
33 NOT USED
34 SCAN OUT 0
35
SCAN OUT 1
36 SCAN OUT 2
DOCK USB
37
38 ZSREQ
39 TSEN_PULSE
40 LCD PWM
41 BL ON
I/O
Battery OFF detection
I
SW 3.2 V line ON
O
O -
Always low output
O
I Lens power PFM/PWM mode switching (L= PFM, H= PWM)
I Microprocessor reset terminal
O Clock oscillation terminal for clock
Clock oscillation terminal for clock
I
-
Program writing control signal, mode lead-in
O Main clock oscillation terminal (4 MHz)
I
Main clock oscillation terminal (4 MHz)
- Regulator output for internal operation
- GND
- GND
- Power terminal
Power terminal
-
O System reset (ASIC reset)
JTAG relation reset
O
Touch sensor sensing LED ON
O
Self LED ON
O
-
I
Communication signal to ASIC
I
Not used. Always low output
O
O ASIC PLL ON/OFF
I Keymatrix input
I Keymatrix input
I Keymatrix input
I Keymatrix input
Keymatrix input
I
I D/D converter (digital system) ON/OFF
One NAND memory reset (L= reset)
O
I USB insertion detection from CN110
I Always input mode
O Keymatrix output
O Keymatrix output
O Keymatrix output
I USB insertion detection from printer dock
I Communication request signal from ASIC
Clock output for touch sensor (approx. 30 kHz)
O
LCD backlight dimmer control signal
O
O LCD backlight ON/OFF signal
– 9 –
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