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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.
See next page
Pin
Signal
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
24
26
27
28
29
30
31
32
33
34
35
36
37
39
41
38
40
BAT_OFF
SW3.2ON
PLLEN
WON
NOT USED
RESET
XCOUT
XCIN
IC (FLMD0)
XIN
REGC
VSS
EVSS
VDD
EVDD
MAIN_RESET
NOT USED
NOT USED
SELF_LED
S2
SCAN IN 3
SCAN IN 2
SCAN IN 1
SCAN IN 0
P ON
COMREQ
NOT USED
BACKUP CTL
SCAN OUT 0
SCAN OUT 1
SCAN OUT 2
NAND RESET
SREQ
TSEN_PULSE
LCD PWM
BL ON
I/O
I
O
O
O
O
I
O
I
-
O
-
-
-
-
-
O
O
O
O
I
I
I
I
I
I
I/O
O
O
O
O
O
O
I
O
O
O
Outline
Battery OFF detection signal input
SW 3.2 V system ON/OFF signal
System ASIC PLL circuit enable signal
-
-
Microprocessor reset input
Clock oscillation terminal for clock (32.768 kHz)
Clock oscillation terminal for clock (32.768 kHz)
Program writing control signal, mode lead-in
-
Regulator output for internal operation
GND
GND
Power terminal
Power terminal
System reset (MRST)
-
-
Shutter S2 input
Keymatrix input
Keymatrix input
Keymatrix input
Keymatrix input
D/D converter (digital system) ON/OFF signal
Command request input (combined with BOOT output)
-
Backup battery charge control (L= charge)
Keymatrix output
Keymatrix output
Keymatrix output
One NAND memory reset (L= RESET)
Serial communication request signal
Clock output for touch sensor (approx. 30 kHz)
LCD backlight dimmer control signal
LCD backlight ON/OFF signal
Self-timer LED (L= lighting)
10
XOUT
I
8-bit microprocessor clock input when writing (EXCLK)
21
NOT USED
O
-
22
USB_CONNECT
I
USB enable insertion detection (L= insertion)
23
POWER KEY
I
Power key input
25
SCAN IN 4
I
Keymatrix input