Sanyo VPC-C5 Service Manual page 8

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.
Signal
Pin
1 AVREF
AVSS
2
IC
3
4
VDD
5 REGC
6 VSS
XIN
7
XOUT
8
9 /RESET
10
XCIN
XCOUT
11
12 CLKSEL0
13
BAT_OFF
14 IR_IN
15
/USB_DET
16 USB_TRIG
17 SREQ
18 BACKUP_CTL
19 CHG_CNT
20 FLMD1
21 /SCAN IN6
22 LCD ON
23 BLON
24 HOT_L2
25 PRG SO
26 PRG SI
27 PRG SCK
28
MAIN RESET
29 GND
30 /VF. LED (R)
31 /VF. LED (G)
32 Vss
33 EVDD
34 P ON
35
PA ON
36 SCK
37 SI
38 SO
39 CHG ON
40 FLMD0
41~44 /SCAN OUT3~0
45
BOOT_COMREQ
I/O
I Analog standard voltage input terminal
GND
-
- Power for program writing
- VDD
Regulator output stability capacity connection
-
- GND
Main clock oscillation terminal (4MHz)
I
Main clock oscillation terminal
-
I Reset input
I
Clock oscillation terminal (32.768 kHz)
O
Clock oscillation terminal
O ARM system clock ON/OFF
I Battery off detection signal input
I Infrared remote control reception data (asynchronous)
I
USB power detection terminal (↓detection)
Cradle TRIG sw (↑detection)
I
Transmission clock for communication (SY-ASIC)
I/O
Backup battery charge control (L=charge)
O
Cradle charge permission signal (H=permission)
O
Flash writing control 1
-
Keyscan input 6
I
D/D converter (LCD system) ON/OFF signal 1
O
O LCD backlight ON signal (H=lighting)
Hot line 2
I/O
O Flash for serial data output
I Flash for serial data input
Flash for serial clock output
O
System reset (MRST)
O
- -
O VF. LED (RED) (L=lighting)
VF. LED (GREEN) (L=lighting)
O
GND
-
VDD
-
O
D/D converter (digital system) ON/OFF signal
O D/D converter (analog system) ON/OFF signal
O Serial clock output
Serial data input
I
O Serial data output
Strobo charge control
O
Flash writing control 0
O
Key matrix output
O
BOOT/command request
I/O
– 8 –
Outline
See next page →