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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. Battery charge control (USB
charge).
Pin
Signal
1
SCK
2
CARD
KEY MENU
3
4
CHG_DONE
5
HOT LINE
6
BAT_CHGERR
NOT USED
7
8
BAT_CHGOFF
9
VDD2
10
VSS2
11
VF_LED (R)
12
VF_LED (G)
13
USB_SUSPWR
14
USB_HPWR
15
NOT USED
16
LENS_4M
17
NAND RESET
MAIN RESET
18
19
HSC ON
20
UTX
21
BACKUP CTL
22
USB_DET1
23
PLLEN
24
TRST
25
KEY_1st
26
MROUT
27
BOOT_COMREQ
28
NOT USED
29
SW3.2 ON
30
ST_CHG
31
NOT USED
32
SCAN IN3
33
SCAN IN2
34
KEY_PLAY
35
SCAN IN1
36
SCAN IN0
37
VSS3
VDD3
38
39
RDSEL
40
CLK (SFW)
41
DATA0 (SFW)
42
P ON
I/O
O
Serial data clock output
SD card detection (L= SD card)
I
I
Key input/MENU
Strobo condensor charge done detection (H → L= charge done)
I
I
Hot line request from ASIC
I
Battery charge status (H= charge error or full charge/L= charging)
O
-
O
Battery charge ON/OFF control (H= CHG OFF or BAT OFF (USB insertion))
-
VDD
-
GND
O
Red LED (H= lighting)
O
Green LED (H= lighting)
O
Power supply ON/OFF from USB (H= USB bus power ON/L= OFF)
O
USB high power/low power switching (H= high power/L= low power)
O
-
Lens driver IC standard clock output
O
OneNAND flash reset (L= reset)
O
System reset (MRST)
O
O
Gyro sensor quick charge (rising) property control (H= quick/L= normal)
UART sending
I
O
Backup battery charge control (H= charge)
I
USB connection detection (L= connection)
ASIC PLL oscillation ON/OFF (H= ON)
O
JTAG reset (L= reset)
O
Key input/1st SHUTTER (L= input)
I
I
LCD panel open/close detection (MR sensor detection) (H= panel open)
Command request input (combine with BOOT output)
I
-
O
O
SW3.2 power ON/OFF signal (L= ON)
O
Strobo charge control (H= charge)
O
-
I
Keyscan input 3 (L= input)
I
Keyscan input 2 (L= input)
I
Key input PLAY (L= input)
I
Keyscan input 1 (L= input)
I
Keyscan input 0 (L= input)
-
GND
VDD
-
I/O
Debugger terminal
Debugger terminal
I/O
Debugger terminal
I/O
O
D/D converter ON/OFF signal
– 9 –
Outline
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