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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
SCK
2
CARD
BACKUP_CTL
3
4
CHG_DONE
5
HOT LINE
6
TEST_MODE
NOT USED
7
8
NOT USED
9
VDD2
10
VSS2
VF_LED (R)
11
12
VF_LED (G)
13
NAND RESET
14
NOT USED
15
BL ON
16
LENS_4M
17
MAIN RESET
18
NOT USED
19
TXD
20
MR_PANEL_OPEN
21
USB_DET
22
NOT USED
23
TRST
KEY_1st
24
25
ST_CHG
26
BOOT_COMREQ
27
KEY_PLAY
28
SW3.2 ON
29
KEY_UP/TELE
30
KEY_DOWN/WIDE
31
KEY_LEFT
32
KEY_RIGHT
33
KEY_SET
34
KEY_VREC
35
VSS3
36
VDD3
37
RDSEL
38
CLK (SFW)
39
DATA0 (SFW)
40
P ON
41
NOT USED
42
NOT USED
I/O
O
Serial data clock output
SD card detection (L= SD card)
I
O
Backup battery charge control (L= charge)
Strobo condensor charge done detection (H → L= charge done)
I
I
Hot line request from ASIC
I
Test mode terminal (L= starting up test mode)
O
-
O
-
-
VDD
-
GND
O
Red LED (H= lighting)
O
Green LED (H= lighting)
O
OneNAND flash reset (L= reset)
-
O
O
LCD backlight ON/OFF single (H= backlight ON)
Lens driver IC standard clock output
O
System reset (MRST)
O
O
-
O
UART sending (combine with debugger terminal)
I
LCD panel open/close detection (H= panel open)
USB connection detection (L= connection)
I
-
O
JTAG reset (L= reset)
O
I
Key input 1st SHUTTER (L= input)
O
Strobo charge control (H= charge)
I
Command request input (combine with BOOT output)
Key input PLAY (L= input)
I
SW 3.2 power ON/OFF signal (L= ON)
O
I
Key input UP/TELE (L= input)
I
Key input DOWN/WIDE (L= input)
I
Key input LEFT (L= input)
Keyscan RIGHT (L= input)
I
Key input SET (L= input)
I
I
Keyscan VREC (L= input)
GND
-
VDD
-
I/O
Debugger terminal
I/O
Debugger terminal
Debugger terminal
I/O
O
D/D converter ON/OFF signal (H= ON)
O
-
O
-
– 9 –
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