MX-K1
1-26
Pin
No.
Symbol
Function
I/O
Pin
No.
Symbol
Function
I/O
3. Pin function
TA8189N (IC401) : REC/PB amp.
1. Terminal layout
2. Block diagram
1
CH1_A
I
Input for playback amp. (Ch1): A cassette
(PB)
2
CH1_B
I
Input for playback amp. (Ch1): B cassette
(REC/PB)
3
NF1
I
NF terminal for playback amp.
4
EQ1
O
Metal output for playback amp.
5
PREOUT1
O
Output terminal for playback amp.
6
MIX_OUT
O
Mixing output
7
GND1
-
Ground
8
EQSW
I
Metal/Normal mode select switch
9
REC_OUT1
O
Output for recording amp.
10
REC_NF1
I
NF terminal for recording amp.
11
REC_IN1
I
Input for recording amp.
12
GND1
-
Ground terminal
13
ALC
I
ALC filter terminal
14
REC_IN2
I
Input for recording amp.
15
REC_NF2
I
NF terminal for recording amp.
16
REC_OUT2
O
Output for recording amp.
17
CG
O
Charge detection terminal
18
VCC
-
Power supply terminal
19
A/B_SW
I
REC amp. Select switch (A cassette/B
cassette)
20
PREOUT2
O
Output terminal for playback amp.
21
EQ2
O
Metal output for playback amp.
22
NF2
I
NF terminal for playback amp.
23
CH2_B
I
Input for playback amp. (Ch2): B cassette
(REC/PB)
24
CH2_A
I
Input for playback amp. (Ch2): A cassette
(PB)
1
2
3
4
5
6
7
8
9
10
11
12
CH1_A
CH1_B
NF1
EQ1
PREOUT1
MIX_OUT
GND1
EQSW
REC_OUT1
REC_NF1
REC_IN1
GND
24
23
22
21
20
19
18
17
16
15
14
13
CH2_A
CH2_B
NF2
EQ2
PREOUT2
A/B_SW
VCC
CG
REC_OUT2
REC_NF2
REC_IN2
ALC
22
23
CH2_B
24
CH2_A
1
CH1_A
2
CH1_B
20
21
19
A/B
M/N
ALC
V
ref1
18
I ref
17
V
ref2
-
+
Ch2
+
-
Ch1
-
+
Ch2
+
-
Ch1
NF2
EQ2
PREOUT2
A/B_SW
VCC
CG
3
5
4
6
7
8
NF1
EQ1
PREOUT1
MIX_OUT
GND1
EQSW
16
REC_OUT2
15
14 REC_IN2
13 ALC
12 GND
11 REC_IN1
REC_NF2
9
REC_OUT1
10
REC_NF1