– 10 –
Table 5-1. 8-bit Microprocessor Port Specification
43
PRG SO
O
Program writing sending data (UART)
44
NOT USED
-
-
42
PRG SI
I
Program writing reception data (UART)
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_SDO
ASIC_SDI
SCK
ZSREQ
communi-
cation
ZBOOT_COMREQ
setting of
external port
45
NOT USED
-
-
46
NOT USED
-
-
47
AVREF
I
Internal A/D standard potential
48
AVSS
-
Analog GND (A/D GND)
49
BATTERY
I
Battery potential detection (A/D)
50
ILLUMI
I
Illuminance sensor potential detection (A/D)
51
TOUCH_IN
I
Touch sensor input (A/D)
52
NOT USED
O
-
53
CARD SW
O
-
54
CARD
I
SD card insertion detection
55
AV JACK
I
AV cable insertion detection (L= detection)
56
ZCHG_DONE
I
Strobo charge done detection (L= charge done)
57
NOT USED
O
-
58
SCK
O
Serial clock output
59
SI
I
Serial data input
60
SO
O
Serial data output
61
ST_CHG ON
O
Strobo condensor charge starting
62
FLMD0_SY
O
8-bit microprocessor self programming port (H= microprocessor rewriting)
63
DC IN
I
DC jack detection
64
S1
I
Shutter S1 input
