Sanyo VPC-E60 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.
Pin Signal
SCK
1
2 BACKUP_CTL
BAT_CHG ON
3
4 DC IN
5 LCD PWM
6
TSEN_CLK
BR MOTOR +
7
8 BR MOTOR –
9 VDD2
10 VSS2
11
CHG_LED
12 SELF_LED
13 TH ON
14 BR PI ON
15
AV JACK
16
HOT LINE
17 SCAN IN0
CHGERR
18
19
USB CONNECT
20
SCAN IN1
21
SCAN IN2
22 SCAN IN3
23
NOT USED
24 BR DET SW
25 ST_CHG ON
26
MAIN RESET
27 PRG ENA/DATA1
28
AVREF ON
29 TSEN_LED
30 CARD
31 PLLEN
32 SCAN OUT 2
33 SCAN OUT 1
34 SCAN OUT 0
35
VSS3
36 VDD3
(DBGP2)
37
38 (DBGP1/CLK)
39 (DBGP0/DATA0)
40 P ON
41 BAT_CHG_CNT
42 COMREQ/ZBOOT
I/O
Serial clock output
O
O Backup battery charging control
O Camera charging control
DC JACK detection
I
O LCD backlight brightness adjustment
O Touch sensor clock (66 kHz)
O Barrier motor control +
Barrier motor control –
O
-
VDD
- GND
O
Charge LED (L= lighting)
O Self timer LED (L= lighting)
O Battery temperature detection power control (L= ON)
Barrier motor PI power ON/OFF
O
I AV JACK detection
Hot line request from ASIC
I
I Keymatrix input
Camera charging error detection
I
USB power detection terminal (L= detection)
I
Key matrix input
I
Key matrix input
I
I Key matrix input
O -
I Barrier motor detection switch
Strobo charging control
O
O System reset (MRST)
Flash rewrite select terminal
I
O AD VREF ON/OFF signal (L= ON)
O Touch sensor LED (H= lighting)
I Card detection
PLL oscillation ON/OFF
O
Key matrix output
O
O Key matrix output
O Key matrix output
- GND
- VDD
I (Terminal for debugger)
O (Terminal for debugger)
(Terminal for debugger)
O
O D/D converter (digital system) ON/OFF signal
O Charging currrent control
I Command request input (combined with BOOT output)
– 8 –
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