– 10 –
Table 5-1. 8-bit Microprocessor Port Specification
54
I
Keymatrix output
44
SCAN OUT0
O
51
SREQ
RESET
I
Reset input
52
53
KEY_POWER
I
KEY_1st
I
1st switch input (using built-in pull-up)
45
ZBOOT_COMREQ
O
BOOT input or COMREQ output
47
CARD
I
Card detection (L= card detection)
48
AV JACK
I
AV jack detection (L= detection)
Power key detection (using built-in pull-up)
50
BAT_OFF
I
Battery OFF detection signal input
Serial communication request signal
46
CHG_DONE
I
Strobo condensor charge done (L= done)
55
XCIN
I
Clock oscillation terminal for clock (32.768 kHz)
56
XCOUT
O
Clock oscillation terminal for clock
57
VSS
-
GND
58
XIN
I
Clock oscillation terminal (connect to BACKUP 3.2 V)
59
XOUT
O
Clock oscillation terminal (NOT USED)
60
VDD1
I
Power
61
UNREG_SY
I
Battery voltage detection
62
TOUCH_IN
I
Touch sensor voltage input
63
BAT_T
I
T terminal voltage input
64
ASIC_SDI
O
Serial data output
ASIC_SDO
I
Serial data input
49
Fig. 5-1 Internal Bus Communication System
2. Internal Communication Bus
The SYA block carries out overall control of camera operation by detecting the input from the keyboard and the condition of the
camera circuits. The 8-bit microprocessor reads the signals from each sensor element as input data and outputs this data to the
camera circuits (ASIC) or to the LCD display device as operation mode setting data. Fig. 5-1 shows the internal communication
between the 8-bit microprocessor and ASIC.
8-bit micro processor
ASIC
MRST
PLLEN
ASIC_SDI
ASIC_SDO
SCK
SREQ
communi-
cation
COMREQ
setting of
external port
