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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.
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
35
36
37
38
39
40
41
42
SCK
CARD
BACKUP CTL
CHG_DONE
HOT LINE
TEST_MODE
LCD_PWM
NOT USED
VDD2
VF_LED (R)
VF_LED (G)
NOT USED
NOT USED
BL ON
LENS_4M
MRST
NOT USED
USB_DET
MROUT
AV_JACK
BOOT_COMREQ
PRG ENA/DATA1
SW3.2ON
KEY_TELE
VSS3
VDD3
RDSEL
CLK
DATA0
P ON
KEY_DOWN
KEY_RIGHT
I/O
O
I
O
I
I
I
O
O
-
O
O
O
O
O
O
O
O
I
I
I
I
I
O
I
-
-
I
O
O
O
I
I
Outline
Serial data clock
SD card detection (L= detection)
Backup battery charge control (L= charge)
Strobo condensor charge done detection (L= detection)
Hot line request
Test mode (L= test mode)
-
VDD
Red LED (H= lighting)
Green LED (H= lighting)
-
-
LCD backlight control (H= ON)
Lens driver standard clock output
System reset output (L= reset)
-
USB detection (L= detection)
AV JACK detection (L= detection)
Command request input
Debugger terminal
SW 3.2 power control (L= ON)
Key input TELE (L= input)
GND
VDD
Debugger terminal
Debugger terminal
Debugger terminal
Digital power control (H=ON)
Key input DOWN (L= input)
Key input RIGHT (L= input)
Panel open detection (H= open)
10
VSS2
-
GND
21
KEY VREC
I
Key input VIDEO REC (L= input)
22
PLLEN
O
PLL control (H=ON)
23
TRST
O
T reset output (L= reset)
-
25
ST_CHG
O
Strobo charge control (H= charge)
30
KEY_WIDE
I
Key input WIDE (L= input)
31
KEY_PLAY
I
Key input PLAY (L= input)
32
KEY_SET
I
Key input SET (L= input)
33
KEY_UP
I
Key input UP (L= input)
34
KEY_LEFT
I
Key input LEFT (L= input)
