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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
ASIC_SCK
PON2
CL
POW_TEST
HOT LINE
TEST
CL
LCDPWM
VDD2
ST_CHG
ZCHGDONE
ONENAND RESET
ZBACKUPCTL
KEY_PLAY
GREEN_LED
MRST
UTX
RTX
KEY_VREC
KEY_POWER
ZBOOT_COMREQ
NOT USED
NOT USED
NOT USED
VSS3
VDD3
RDSEL
CLK (SFW)
DATA0 (SFW)
P ON
I/O
Outline
TO Asic
Test mode
Correspondence from ASIC
Test mode
CL
-
Strobe charge control (H= charge)
Main condensor charge voltage detection
OneNAND flash reset
Backup circuit (L=ON)
L: Key detection PLAY
System reset (L=reset)
Battery residual quantity ICTXD: Debugger
Key detection VREC (L= detection)
L: InterruptKey. Key detection POWER
BOOT low output
-
-
-
-
-
Debugger terminal
Debugger terminal
Debugger terminal
PWA DIGITAL
Battery residual quantity ICRXD
VSS2
-
MR_OPEN
L: Panel close
KEY_MENU
Key detection MENU (L= detection)
LCD backlight brightness control
KEY_1st
L: InterruptKey. Key detection shutter
KEY_SET
Key detection SET (L= detection)
KEY_UP
Key detection UP (L= detection)
KEY_DOWN
Key detection DOWN (L= detection)
KEY_LEFT
Key detection LEFT (L= detection)
KEY_RIGHT
Key detection RIGHT (L= detection)
NOT USED
-
SW3.2ON
SW 3.2V supply (L= ON)
O
O
O
I
I
I
O
O
-
-
O
I
O
O
I
O
O
O
O
I
I
I
I
I
I
I/O
-
-
I
I
I
I
I
-
-
-
-
-
-
O
-
O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
PWA DIGITAL
CL
Green LED
RED_LED
SW unit LED (H= lighting)
