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1-5. SYA CIRCUIT DESCRIPTION
1. Configuration and Functions
For the overall configuration of the SYA block diagram, refer to the block diagram. The SYA block centers around a 8-bit micropro-
cessor (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
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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
41~44
45
38
40
SCK
CARD
BACKUP_CTL
DC_IN
NOT USED
AV JACK
NOT USED
NOT USED
VDD2
VF. LED (R)
SELF LED
CLKSEL0
LCD ON 2
BL ON
PA ON2
MAIN RESET
VF. LED (G)
P ON
PA ON
ASIC TEST
NOT USED
ENA/DATA1
AVREF ON
NOT USED
NOT USED
NOT USED
SCAN IN2
SCAN IN1
SCAN IN0
VSS3
VDD3
RDSEL
CLK (SFW)
DATA0 (SFW)
NOT USED
SCAN OUT3~0
COMREQ_BOOT
I/O
O
I
O
I
-
I
-
-
-
O
O
O
O
O
O
O
O
O
O
O
-
I
O
-
-
-
I
I
I
-
-
I
O
O
-
O
-
Outline
Serial clock output
Memory card detection
Backup battery charge control (L= charge)
DC JACK detection
-
AV JACK detection
-
-
VDD
VF. LED (Red) (L= lighting)
Self-timer LED (L= lighting)
ARM system clock ON/OFF
D/D converter (LCD system) ON/OFF signal 2
LCD backlight ON/OFF signal
D/D converter (analog system) ON/OFF signal 2
System reset (MRST)
VF. LED (green) (L= lighting)
D/D converter (digital system) ON/OFF signal
ASIC control signal (ZTEST)
-
Select terminal for flash rewrite
AD VREF ON/OFF signal
-
-
-
Keymatrix input
Keymatrix input
Keymatrix input
GND
VDD
Select terminal for on chip debugger
Flash rewrite (combined with ROM debugger)
Flash rewrite (combined with ROM debugger)
-
Keymatrix output
Command request input (combined with BOOT output)
D/D converter (analog system) ON/OFF signal
10
VSS2
-
GND
21
LCD ON
O
D/D converter (LCD system) ON/OFF signal
22
USB CONNECT
I
USB power detection terminal (L= detection)
23
PLLEN
O
PLL oscillation ON/OFF
25
CHG ON
O
Strobo charging control
