– 9 –
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
ZDOCK_AV
NOT USED
CTRL
RESET
XCOUT
XCIN
FLMD0
XIN
REGC
VSS
EVSS
VDD
EVDD
MRST
TRST
FET_G1
SELF_LED
PLLEN
SCAN IN 3
SCAN IN 2
SCAN IN 1
SCAN IN 0
P ON
NAND_RESET
USB CONNECT
2nd
SCAN OUT 0
SCAN OUT 1
SCAN OUT 2
DOCK USB
SREQ
TSEN_PULSE
LCD PWM
BL ON
I/O
I
O
I
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
-
ASIC PLL ON/OFF
Keymatrix input
Keymatrix input
Keymatrix input
Keymatrix input
D/D converter (digital system) ON/OFF
Flash memory reset (L= reset)
USB insertion detection from CN110
Shutter 2nd detection
Keymatrix output
Keymatrix output
Keymatrix output
-
Communication request signal from ASIC
Touch sensor pulse output (33 kHz)
LCD backlight dimmer control signal
LCD backlight ON/OFF signal
Self LED ON
10
XOUT
O
Main clock oscillation terminal (4 MHz)
21
OP SERIAL
I
-
22
COMREQ
I
Communication signal to ASIC
23
CHG_SEL
O
Strobo control signal
25
SCAN IN 4
I
Keymatrix input
