Olympus CAMEDIA C-7070 Wide Zoom, Руководство по ремонту

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H-9 Ver. 1
H. DESCRIPTION OF MECHANISM C-7070 Wide Zoom
87
88
89
90
91
92
93
XDCARD
SCAN OUT 4
SCAN OUT 5
SCAN IN 0/PRG SCK
SCAN IN 1/PRG SO
SCAN IN 2/PRG SI
SCK
I
O
I
I
I
I
O
xD card insertion detection L : Attachment
Key matrix output
Key matrix input/Flash rewrite serial communication data input
Key matrix input/Flash rewrite serial communication data output
Key matrix input/Flash rewrite serial communication clock output
Serial communication clock output
Key matrix output
Table 5-1. 8-bit Microprocessor Port Specification
83
BKUPCTL
O Backup battery charge control L : Charge
84
CF CARD I
81 O VF. LED (orange) L : Lighting
82 O A/D standard voltage ON/OFF signal L : ON AVREF ON
LED (ORANGE)
94
SO
O
Serial communication data output ( → ASIC)
95 SI
I
Serial communication data input (
←
ASIC)
96 AVSS -
GND
97~100 SCAN IN 6~3
I Key matrix input
Expansion memory card (CF) attachment detection signal L : Attachment
85
O
DC/DC converter ON/OFF signal H : ON
P ON
86
O
DC/DC converter (analog) ON/OFF signal H : ON PA ON
2. Setting of external port and communication
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.
Fig. 5-1 Internal Bus Communication System
8-bit micro processor ASIC
MRST
SI
SO
SCLK
SREQ
c o m m u -
nication
COMREQ
setting of
external port
80
79
CARD_LED
LED (GREEN)
O
O CARD LED L : Lighting
VF. LED (green) L : Lighting