-
9
-
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, ASIC and SPARC lite circuits.
Table 5-1. 8-bit Microprocessor Port Specification
-
ZAVJACK
AV JACK connection detection for three value detection
VSS1
UNREG SY
Power supply voltage measurement of 1/2UNREGSY
NOT USED
-
VDD1
-
KEY_2ND
L: InterruptKey. Key detection shutter
ZUSBDET
USB detection (L= detection)
RESET
SBM reset (L= reset)
XCIN
32K oscillation input terminal
XCOUT
32K oscillation output terminal
NOT USED
-
8-bit
Microprocessor
ASIC
SREQ
ASIC SO
ASIC SI
SCK
MRST
ZBAT_OFF
CL
NOT USED
NOT USED
AD INPUT OK
-
-
L: Interruption. From power supply watch IC
L: Interruption. Correspondence from ASIC
SREQ
HINGE
LCD panel rotation detection (L= panel inversion)
ZCARD
Card detection (L= detection)
TH_TEMP
Camera temperature detection
ASIC_SDI
Data output toASIC
ASIC_SDO
Data input from ASIC
PLLEN
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
O
I
I
O
-
-
I
I
I
I
I
I
O
-
-
-
-
I
I
I
O
I
PLLEN
EV3X PLLEN
