Microprocessor Pin Function Tables; Camera Microprocessor - Hitachi VK-S274R Service Manual

Description of Operation > Microprocessor Pin Function Table
3-2 Microprocessor Pin Function Table
3-2-1 Camera microprocessor (IC1201: Camera µP)
Pin Active
I/O
No. Level
1 O (Pulse) LD-DSP
2 O (Pulse) CS-DAC
3 O (Pulse) CS-VAP
4 O Hi GYRO-RST
5 ----- CEON
6 ----- CHARGE
7 O (Pulse) RDOEB
8 O (Pulse) ZDOEB
9 O (Pulse) RDCK
10 O (Pulse) ZDCK
11 O (Pulse) IRDCK
12 ----- ----- VCC1
13 I Hi/Lo LINE-SW
14 ----- ----- GND1
15 O Hi/Lo IRDCW
16 O (Pulse) IROREB
17 O Hi IR-RESET
18 I (Pulse) IR-SENS
19 O ----- IR-LED
20 ----- ----- NC1
21 ----- ----- TST-PIN1
22 I 0V-3V H-VAP
23 ----- ---- TST-PIN0
24 I 0V-3V V-VAP
25 ----- ----- CHECK8
26 O Hi ZD-RESET
27 O Hi RD-RESET
28 O (Pulse) IRIS-PWM
29 ----- ----- LD-JIG
30 O (Pulse) ZOOM-LED
31 ----- ----- TXD2
32 ----- ----- RXD2
33 O (Pulse) FCUS-LED
34 O Hi/Lo ZDCW
35 O (Pulse) RDCW
36 O (Pulse) ZD-PWMA
37 O ----- RD-PWMA
Abbreviation
Activates data communication with IC1121 (CAMERA DSP).
Not used. Open.
Activates focus drive data communications with IC1302 (FOCUS
MOTOR DRIVE).
Activates zoom drive data communications with IC1301 (ZOOM
MOTOR DRIVE).
Outputs focus motor drive signal to IC1302 (FOCUS MOTOR DRIVE).
Outputs zoom motor drive signal to IC1301 (ZOOM MOTOR DRIVE).
Not used. Open.
3V power input.
External sync detection input. When "Hi" is input, the unit will be
driven in the external sync mode; when "Lo" is input, it will be driven
in the internal sync mode.
Ground.
Not used. Open.
Not used. Open.
Resets IC1301 (ZOOM MOTOR DRIVE).
Resets IC1302 (FOCUS MOTOR DRIVE).
Iris motor drive output .
Not used. Open.
Output pulses to drive the ZOOM LED in the lens block via Q1201
(LED DRIVE).
Not used.
Output pulses to drive the FOCUS LED in the lens block via Q1201
(LED DRIVE).
Issues a command which determines with IC1301 (ZOOM MOTOR
DRIVE).
Issues a command which determines with IC1302 (FOCUS MOTOR
DRIVE).
Not used. Open.
Function
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