Hitachi VK-S274R Service Manual page 14

Description of Operation > Microprocessor Pin Function Table
Pin Active
I/O Abbreviation
No. Level
79 ----- ----- NC9
80 ----- ----- NC10
81 ----- ----- NC11
82 ----- ----- NC12
83 O (Pulse) SDO
84 I (Pulse) SDI
85 O (Pulse) SCLK
86 ----- ----- DC-LIGHT
87 ----- ----- NC13[1]
88 I (Pulse) 4800SET
89 ----- ----- LIGHT-SW
90 I Hi/Lo COLOR/BW
91 ----- ----- NC13[2]
92 ----- ----- F-DIAL1
93 ----- ----- F-DIAL2
94 ----- ----- LIGHT-0
95 O Hi/Lo STBY_5V
96 O (Pulse) CLK-CDS
97 O (Pulse) SDO-CDS
98 O (Pulse) CS-CDS
99 O (Pulse) CS-EE[1]
100 O (Pulse) CS-EE[2]
Not used. Open.
For data communications with IC1121 (CAMERA DSP), IC1202
(EEPROM), IC1203 (EEPROM).
Not used. Open.
Not used.
Not used. Open.
Color model and B/W model select input. (Hi: Color model/Lo: B/W
model)
Not used. Open.
5V regulator control output. (Hi: On/Lo:Off)
Transfer data to IC1101 (CDS/AGC & A/D CONV. ).
Activates data communications with IC1101 (CDS/AGC & A/D
CONV. ).
Activates data communications with IC1202 (EEPROM).
Activates data communications with IC1203 (EEPROM).
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Function