5-7. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS (MA-405 BOARD IC160)

Pin No.

 

 

Pin Name

I/O

Function

 

 

 

 

 

 

1

 

DEST

I

Destination control input

 

 

 

 

 

 

2

 

MPX MODE

I

STEREO/MONO/SAP DETECTION

 

 

 

 

 

 

3

 

TU AFT

I

Tuner analog AFT input

 

 

 

 

 

 

4

 

FUNC KEY2

I

Key input

 

 

 

 

 

 

5

 

FUNC KEY1

I

Key input

 

 

 

 

 

 

6

 

S SENS

I

Tape end sensor input

 

 

 

 

 

 

7

 

T SENS

I

Tape top sensor input

 

 

 

 

 

 

8

 

V RF ENV

I

Video playback signal envelope input

 

 

 

 

 

 

9

 

AF ANV

I

Hi-Fi audio playback signal envelope input

 

 

 

 

 

 

10

 

CBC ON

O

Cable box control signal output

 

 

 

 

 

 

11

 

KKP+

I

ETR pulese signal input

 

 

 

 

 

 

12

 

KKP–

I

ETR pulese signal input

 

 

 

 

 

 

13

 

QVD

O

Quasi VD pulese output

 

 

 

 

 

 

14

 

REMOCON

I

Remote sires signal input

 

 

 

 

 

 

15

 

C ROT

O

Head AZ signal output

 

 

 

 

 

 

16

 

HA SWP

O

SP/EP changed head signal

 

 

 

 

 

 

17

 

ENV SW

I

SP/EP head output lebel ditaction signal

 

 

 

 

 

 

18

 

RF SWP

O

VIDEO RF switching pulse output.

 

 

 

 

 

 

19

 

AF SWP

O

AF switching pulse output.

 

 

 

 

 

 

20

 

END LED

O

END sensor LED output

 

 

 

 

 

 

21

 

ANT SEL

O

TV/VTR RF modulator control output

 

 

 

 

 

 

22

 

AF REC P

O

Hi-Fi record control pulse output.

 

 

 

 

 

 

23

 

FE ON

—

NC

 

 

 

 

 

 

24

 

CAP RVS

O

Capstan reverse control

 

 

 

 

 

 

25

 

SUR ON

—

NC

 

 

 

 

 

 

26

 

MODE4

I

Mechanism section CAM encoder input (data4)

 

 

 

 

 

 

27

 

MODE3

I

Mechanism section CAM encoder input (data3)

 

 

 

 

 

 

28

 

MODE2

I

Mechanism section CAM encoder input (data2)

 

 

 

 

 

 

29

 

MODE1

I

Mechanism section CAM encoder input (data1)

 

 

 

 

 

 

30

 

REC PRF

I

Erasing protection tab, cassette IN detection input

 

 

 

 

 

 

31

 

I2C CLK EEP

I/O

HC CLOCK line (EEPROM)

 

 

 

 

 

 

32

 

I2C DATA EEP

I/O

HC DATA line (EEPROM)

 

 

 

 

 

 

33

 

CAM

O

Cam motor control signal output

 

 

 

 

 

 

34

 

RESET

I

System reset input

 

 

 

 

 

 

35

 

32kHz (in)

I

Sub clock 32MHz

 

 

 

 

 

 

36

 

32kHz (out)

O

Sub clock 32MHz

 

 

 

 

 

 

37

 

Vcc

I

5V

 

 

 

 

 

 

38

 

4fsc (in)

I

Main clock input

 

 

 

 

 

 

39

 

4fsc (out)

O

Main clock output

 

 

 

 

 

 

40

 

Vss

—

Ground

 

 

 

 

 

 

41

 

ARC CLK

O

Realityregenarator (ARC) control clock signal

 

 

 

 

 

 

42

 

ARC DATA

O

Realityregenarator (ARC) control data signal

 

 

 

 

 

 

43

 

CLK SEL

I

CLOCK seleal “L” Sub clock, “H” main and sub clock.

 

 

 

 

 

 

44

 

OSC IN

I

OSD clock input

 

 

 

 

 

 

45

 

OSC OUT

O

OSD clock output

 

 

 

 

 

 

46

 

NUB

—

Ground

 

 

 

 

 

 

47

 

LPF

I/O

fsc filter

 

 

 

 

 

 

48

 

 

 

O

“L” output when SP mode.

 

SP

49

 

OSD GND

—

Ground

 

 

 

 

 

 

50

 

OSD V IN

I

OSD Video signal input.

 

 

 

 

 

 

5-3

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