Hitachi VK-U174 Service Manual page 19

Description of Operation > Microprocessor Pin Function Table
Pin
Abbreviation I/O
No.
81 NC16 -----
82 NC17 -----
83 SDO O
84 SDI I
85 SCLK O
86 NC18 -----
87 NC19 -----
88 NC20 -----
89 NC21 -----
90 NC22 -----
91 NC23 -----
92 NC24 -----
93 NC25 -----
94 SYS-RST -----
95 STBY-5V O
96 CK-CDS O
97 SDO-CDS O
98 CS-CDS O
99 CS-EE1 O
100 CS-EE2 O
Active
Level
----- Not used. Open.
-----
Pulse For data communications with IC2052 (CAMERA DSP), IC2303
Pulse (EEPROM1), IC2304 (EEPROM2).
Pulse
----- Not used. Open.
-----
-----
-----
-----
-----
-----
-----
-----
Hi/Lo Power circuit control output. Controls the IC3001 (PWM).
Pulse Transfer data to IC2001 (CDS/AGC & A/D CONV. ).
Pulse
Pulse Activates data communications with IC2001 (CDS/AGC & A/D
CONV. ).
Pulse Activates data communications with IC2303 (EEPROM1).
Pulse Activates data communications with IC2304 (EEPROM2).
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Function