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5-2
CASSETTE
CASSETTE
TAPE
TAPE
PB
•
REC
•
Signal
Pin No.
I/O
EJECTED
LOADING
UNLOADING
THREAD-
UNTHREAD-
STOP
FF
REW
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
ING
ING
CAM
MA-377
O
Hi-Z
H
L
H
L
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
*
7
IC101
id
MODE 1
MA-377
IH
L
L
*
1
*
1
H
HHHH
HHH
L
H
H
IC101
if
MODE 2
MA-377
IH
L
L
*
1
*
1
H
H
H
LL
LLL
L
L
L
IC101
ig
MODE 3
MA-377
IL
L
L
*
1
*
1
H
LLLL
LLL
H
L
L
IC101
ih
MODE 4
MA-377
IL
H
H
*
1
*
1
L
H
H
LL
LLL
L
L
L
IC101
ij
REC PRF
MA-377
IH
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
*
2
IC101
tg
T REEL
MA-377
I
H
/L
H/L
H
/L
H/L
H
/L
H/L
*
3
*
3
*
3H
/L
*
3
*
3
*
3
*
3
*
3H
/L
IC101
ik
S REEL
MA-377
I
H
/L
H/L
H
/L
*
3
*
3H
/L
*
3
*
3
*
3H
/L
*
3
*
3
*
3
*
3
*
3H
/L
IC101
il
END-LED
MA-377
O
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC101
uf
(O.D)
CAP RVS
MA-377
I
L
H
L
H
/L
H
L
H
H
HHH
L
H
H
IC101
od
T SENS
MA-377
I
*
4
*
4
*
4
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
IC101
qs
S SENS
MA-377
I
*
4
*
4
*
4
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
IC101
qa
5-3.
SYSTEM CONTR
OL
–
MECHANISM BLOCK INTERF
A
CE (MA-377 BO
ARD IC101)
∗
1.
Uncer
tainty
.
∗
2.
“L
” when er
asing protection tab is bent,
“H
” when not bent.
∗
3.
Pulse of period in propor
tion to reel rotating speed.
∗
4.
Appro
x.
2 msec per
iod
“H
” pulse
.
∗
5.
Pulse at tape running.
∗
6.
Nor
mally
“L
”.
2 msec per
iod
“H
” pulse when tape top or tape end is detected.
∗
7.
When tr
ansition to UNLO
ADING direction:
L.
When tr
ansition to LO
ADING direction:
H.
When CAM motor is stopped: Hi-Z.
5-3
5-4.
SYSTEM CONTR
OL
–
A
U
DIO BLOCK INTERF
A
CE (MA-377 BO
ARD IC101)
STOP/
TAPE
TAPE
PB
•
REC
•
Signal
Pin No.
I/O
FF/
THREAD-
UNTHREAD-
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
REW
ING
ING
AU RF
MA-377
I
AF RF envelope signal input terminal for automatic tracking.
IC101
qf
A MUTE
MA-377
O
Hi-Z
Hi-Z
Hi-Z
Hi-Z
H
H
H
H
H
L
L
IC101
ul
(O.D)
AF SWP
MA-377
O
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
IC101
wd
FULL ERASE
MA-377
O
H
H
H
HHH
HH
H
L
H
IC101
oa
(O.D)
REC P
MA-377
O
L
L
L
LLL
LL
L
H
L
IC101
os
NAPB
MA-377
O
L
L
L
LLL
LL
L
H
L
IC101
wa
∗
1.
25 Hz (P
AL), 30 Hz (NTSC) 50% duty pulse appro
x.
5 msec dela
y
ed from RF SW P
.
5-4
5-5.
SER
V
O
/SYSTEM CONTR
OL,
OSD MICR
OPR
OCESSOR PIN FUNCTION (MA-377 BO
ARD IC101)
Pin No.
Pin Name
I/O
Function
1
SW1
O
T
uner system control-1 signal output
2
AN GND
–
Analog g
round
3
APC ERR
OR
I
APC error v
oltage signal input
4
ETR1
I
Easy timer knob pulse1 signal input
5
FUNC
. KEY2
I
Function k
e
y analog v
oltage signal input
6
TU AFT
I
A
uto fine tuning signal input
7
FUNC
. KEY1
I
Function k
e
y analog v
oltage signal input
8
P
O
W
ER F
AIL
I
P
o
w
er f
ailure detect signal input
9
ETR2
I
Easy timer knob pulse2 signal input
10
DEST
I
Destination set signal input
11
S SENS
I
Supply end sensor signal input
12
T SENS
I
T
ak
e up end sensor signal input
13
VIDEO RF
I
Video RF en
velop signal input
14
A
U
RF
I
Hi-Fi audio en
v
elop signal input
15
UN 5V
–
P
o
w
er supply analog 5V
16
RESET
I
Reset signal input
17
SW 2
O
T
uner system control 2 signal output
18
P
A
L
O
“H
”:
P
AL (video b
loc
k control signal output)
19
OSD MIX
O
“H
”: MESECAM mode set
20
SP
–
Not used
21
NAPB
O
Nor
mal audio PB signal output
22
VCC
–
P
o
w
er supply uns
witch 5V
23
AF SWP
O
AF s
witching pulse signal output
24
RF SWP
O
RF s
witching pulse signal output
25
CAP
VS
O
Capstan error signal output
26
DR
UM
VS
O
D
rum motor error signal output
27
QVD
O
Quasi
VD pulse signal output
28
C R
O
T
A
R
Y
–
Not used
29
H.AMPSW
O
“H
”:
A-DUB mode (CTL amp
. gain control signal output)
30
COMP
–
Not used
31
CTL (+)
I/O
CTL head signal input/output (REC mode)
32
CTL (-)
I/O
CTL head signal input/output (REC mode)
33
VSS (SER
V
O
)
–
Ser
v
o
g
round
34
CTL-AMP1
I
CTL amp
. control signal input (gain set)
35
CTL-AMP2
I
CTL amp
. control signal input (gain set)
36
CTL-AMP3
I
CTL amp
. control signal input (gain set)
37
CTL-AMP OUT
O
CTL amp
. control signal output (f
or chec
k)
38
DR
UM FG
I
D
rum FG schmitt amp
. input
39
DR
UM PG
I
D
rum PG schmitt amp
. input
40
CAP FG
I
Capstan FG schmitt input
41
VCC (SER
V
O
)
–
P
o
w
er supply uns
witch 5V
42
VCC (OSD)
–
P
o
w
er supply OSD 5V
43
VIDEO IN
I
Composite video signal input
44
VREF
I
Ref
erence bias and clamp bias po
w
er signal input
45
VIDEO OUT
O
Composite video signal output
46
CHAR BIAS
–
Not used
47
AFC LPF
I
AFC LPF signal input
48
AFC OSC
I
AFC oscillation signal input
49
VSS (OSD)
–
OSD g
round
50
DOSC IN
I
OSC dot cloc
k oscillator signal input
Pin No.
Pin Name
I/O
Function
51
DOSC OUT
O
OSC dot cloc
k oscillator signal output
52
4FSC OUT
O
OSC 4fsc oscillator ter
minal signal output
53
4FSC IN
I
OSC 4fsc oscillator ter
minal signal input
54
CSYNC
I
Composite sync signal input
55
REC PRF
I
Erasing protection tab
. cassette in detection signal input
56
IIC D
A
T
A
O
EEP ROM, Hi-Fi IC
, RR IC
, tuner/ser
ial comm
unication data signal output
57
IIC CLOCK
O
EEP ROM, Hi-Fi IC
, RR IC
, tuner/ser
ial comm
unication cloc
k signal output
58
DRUM QR
O
Drum motor step driving signal output
59
PB
–
Not used
60
AF REC P
O
“L
”:
output when Hi-Fi audio REC pause (Not used)
61
TV/VTR
–
Not used
62
IIC CLOCK (VIDEO)
O
Video
, video amp
. ser
ial comm
unication cloc
k signal output
63
IIC
D
A
T
A
(VIDEO)
O
Video
, video amp
. ser
ial communication data signal output
64
BLUE BACK
O
O
SD block control signal output
65
APC PWM
O
APC PWM signal output
66
CAP
TRQ PWM
O
Capstan
TRQ PWM signal output
67
SECAM ON
O
“L
”:
SECAM mode set dur
ing PB
68
TEST
I
Fixed to ground
69
32kHz (OUT)
O
Timer cloc
k ter
minal (32kHz) output
70
32kHz (IN)
I
Timer cloc
k ter
minal (32kHz) input
71
VSS
–
Ground
72
10MHz (IN)
I
System cloc
k ter
minal (10MHz) input
73
10MHz (OUT)
O
System cloc
k ter
minal (10MHz) output
74
END LED
O
T
op/end LED on/off control signal output
75
POWER CONT
O
Power supply control signal output
76
RR CLK
–
Not used
77
RR D
A
T
A
–
Not used
78
OSD SELECT
O
OSD X' tal select (P
AL/NTSC) signal output
79
A MUTE
O
“H
”: audio mute signal output
80
WRITE CONT
O
EEP ROM write timing control signal output
81
IN SEL
O
Line-input selection control signal output
82
REMOCON
I
Remote control (SIRCS) signal input
83
CAM
O
CAM motor control signal output
84
MODE1
I
M
echanism section CAM encoder data 1 input
85
MODE2
I
M
echanism section CAM encoder data 2 input
86
MODE3
I
Mechanism section CAM encoder data 3 input
87
MODE4
I
Mechanism section CAM encoder data 4 input
88
T
REEL
I
T
side reel FG input
89
S REEL
I
S
side reel FG input
90
FLD
CS
O
FIP driver chip select signal output
91
FULL
ERASE
O
Full erase head on/off control signal output
92
REC P
O
“L
”: output when REC pause
93
CAP
R
V
S
O
Capstan reverse control signal
“H
”: when reverse
94
CAP
QR
O
Capstan step driving signal output
95
S CLOCK
O
Serial communication clock signal output
96
S IN
I
Serial communication data signal input
97
S OUT
O
Serial communication data signal output
98
PLL
CLOCK
O
T
uner PLL cloc
k signal output
99
TU
ENABLE
O
T
uner PLL chip select signal output
100
PLL
D
A
T
A
O
T
uner PLL data signal output
5-5
5-5 E
5-6.
ZWEIT
ON PR
OCESSOR PIN FUNCTION (GK-12 BO
ARD IC001)
Pin. No.
Pin
Name
I/O
Function
1
OUT
L
O
Audio left signal output
2
O
UT
R
O
Audio right signal output
3
CDE1
–
De-emphasis 1 capacitor
4
N.C.
–
Not used
5
N.C.
–
Not used
6
CDE2
–
De-emphasis 2 capacitor
7
A
GND
–
Analog ground
8
AF1 I
I
Audio 1 signal input
9
N.C.
–
Not used
10
AF1 O
O
Audio 1 signal output
1
1
N.C.
–
Not used
12
N.C.
–
Not used
13
AFR
I
AF 1/2 signal return
14
LF1
–
Loop filter 1
15
X
T
A
L
I
4MHz reference input
16
N.C.
–
Not used
17
N.C.
–
Not used
18
LF2
–
Loop filter 2
19
N.C.
–
Not used
20
N.C.
–
Not used
21
MAD
I
Programmable address bit (module address)
22
N.C.
–
Not used
23
N.C.
–
Not used
24
CAF1
O
AF1 capacitor
25
IF INT
I
IF intercarrier input
26
CAF2
O
AF2 capacitor
27
D GND
–
Digital ground
28
VCC
–
Power supply 5V
29
SCL
I
Serial communication clock input
30
SDA
I/O
Serial communication data input and output
31
LPF
–
Pilot loop filter
32
AF2 O
O
Audio 2 signal output
33
AF2 I
I
Audio 2 signal input
34
CTR IG
–
T
rigger capacitor
3
5
CID
–
Identification capacitor
36
N.C.
–
Not used
37
P1
O
Output port 1
38
EXT
M
I
External audio input monaural channel
39
EXTI R
I
External audio input right channel
40
EXTI L
I
External audio input left channel
4
1
V
R
E
F
I
Analog reference voltage digital-to-analog converter and operational amplifiers
42
P2
O
Output port 2
43
OUT
M
O
Audio monaural signal output
44
N.C.
–
Not used
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