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JOG 1
I
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1-6. SY1 CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SY1 circuit board, refer to the block diagram. The SY1 circuit board 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
1~4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
23
30
32
33
34
35
36
37
38
39
40
41
42
43
45
48
44
46
SCAN OUT 0~3
P ON
PA ON
LCD ON
P ON2
VSS
VDD
SELF_LED
STBY_LED (GREEN)
AVREF_ON
SI
SO
SCK
PRG SI
PRG SO
PRG SCK
AV JACK
NOT USED
CHG ON
INT_TMP
CHG VOL
BATTERY
AVREF
AVDD
RESET
XCOUT
XCIN
IC
XOUT
XIN
VSS
BAT OFF
SREQ
JOG 0
SCAN_IN5
BR PCON
I/O
O
O
O
O
O
-
-
O
O
O
I
O
I/O
I
O
I/O
I
-
O
I
I
I
-
-
I
O
I
I
O
I
-
I
I
I
I
O
Outline
Key matrix output
Digital power ON/OFF control
H : ON
Analog power ON/OFF control
H : ON
LCD power ON/OFF control
H : ON
ASIC/CF card power timing control
H : ON
GND
VDD
Stand-by LED (green) control
L : ON
A/D converter standard voltage control
L : ON
Receiving data (from ASIC)
Sending data (to ASIC)
Communication clock (to ASIC)
Flash memory write receiving data
Flash memory write sending data
Flash memory write communication clock
AV jack connection detection
H : AV JACK detection
-
Internal temperature detection input (analog input)
Storobe charge voltage detection (analog input)
Battery voltage detection (analog input)
Analog standard voltage input terminal
A/D converter analog power terminal
Reset input
Clock oscillation terminal (32.768 kHz)
Clock oscillation terminal
Flash memory writing voltage
Main clock oscillation terminal (4MHz)
Main clock oscillation terminal
GND
Battery OFF detection
Serial communication requirement (from ASIC)
Jog shuttle input 0
Key scan input 5
Jog shuttle input 1
-
Flash charge control
H : ON
13
STBY_LED (RED)
O
Stand-by LED (red) control
L : ON
24
VDD
-
VDD
25
AVSS
-
Analog GND
26~29
SCAN IN 3~0
I
Key scan input
Self-timer LED control
L : ON
31
DC IN
I
DC JACK/battery detection input (analog input)
