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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
BATT_OFF
SW_3.2 V ON
NOT USED
NOT USED
CTRL
RESET
XCOUT
XCIN
FLMD0
XIN
REGC
VSS
EVSS
VDD
EVDD
MRST
TRST
T SEN LED
SELF_LED
PLLEN
SCAN IN 3
SCAN IN 2
SCAN IN 1
SCAN IN 0
P ON
NAND_RESET
USB CONNECT
NOT USED
SCAN OUT 0
SCAN OUT 1
SCAN OUT 2
DOCK USB
ZSREQ
TSEN_PULSE
LCD PWM
BL ON
I/O
I
O
O
O
I
I
O
I
-
I
-
-
-
-
-
O
O
O
O
O
I
I
I
I
I
O
I
I
O
O
O
I
I
O
O
O
Outline
Battery OFF detection
SW 3.2 V line ON
-
Always low output
Lens power PFM/PWM mode switching (L= PFM, H= PWM)
Microprocessor reset terminal
Clock oscillation terminal for clock
Clock oscillation terminal for clock
Program writing control signal, mode lead-in
Main clock oscillation terminal (4 MHz)
Regulator output for internal operation
GND
GND
Power terminal
Power terminal
System reset (ASIC reset)
JTAG relation reset
Touch sensor sensing LED ON
ASIC PLL ON/OFF
Keymatrix input
Keymatrix input
Keymatrix input
Keymatrix input
D/D converter (digital system) ON/OFF
One NAND memory reset (L= reset)
USB insertion detection from CN110
Always input mode
Keymatrix output
Keymatrix output
Keymatrix output
USB insertion detection from printer dock
Communication request signal from ASIC
Clock output for touch sensor (approx. 30 kHz)
LCD backlight dimmer control signal
LCD backlight ON/OFF signal
Self LED ON
10
XOUT
O
Main clock oscillation terminal (4 MHz)
21
NOT USED
I
-
22
COMREQ
I
Communication signal to ASIC
23
HOT LINE
O
Not used. Always low output
25
SCAN IN 4
I
Keymatrix input
