RXD-790/V860/V890
11
CIRCUIT DESCRIPTION
Pin No.
Name
I/O
Description
1
BEAT-C
O
Beat cancel
H=ON
L=OFF
2
R/P
O
REC/PLAY changeover
H=REC
L=PLAY
3
RMUTE
O
REC MUTE
H=OFF
L=ON
4
A/B
O
A/B play changeover
H=B
L=A
5
VSS
GND
6
BIAS
O
BIAS changeover
H=ON
L=OFF
7
NR
O
Noise redaction changeover (DOLBY)
H=ON
L=OFF
8
D-R/P
O
Dolby REC/PLAY changeover
H=REC
L=PLAY
9
LMUTE
O
LINE MUTE
H=OFF
L=ON
10
SO
O
Shift resister data output
11
DATA
I
Data input
12
CLK
I
Clock
13
STB
I
Strobe
14
CLR
I
Data clear
15
VSS
GND
16
A-SOL
O
A deck solenoid control
H=ON
L=OFF
17
A-CPM
O
A deck motor control
H=ON
L=OFF
18
B-SOL
O
B deck solenoid control
H=ON
L=OFF
19
B-CPM
O
B deck motor control
H=ON
L=OFF
20
VDD
Power supply(5V)
Pin No.
Name
I/O
Description
1
SRS_LED
O
SRS LED
H=ON
L=OFF
2
3ST_LED
O
3STEREO LED
H=ON
L=OFF
3
PRO_LED
O
PRO LOGIC LED
H=ON
L=OFF
4
H.TAP
O
HIGH TAP control
H=ON
L=OFF
5
VSS
GND
6
DC_OFF
O
CD DSP power supply
H=OFF
L=ON
7
DOLBY
O
DOLBY ON/OFF (LOW TAP)
H=ON
L=OFF
8
SP RELAY
O
SP relay control
H=ON
L=OFF
9
CS RELAY
O
CS SP relay control
H=ON
L=OFF
10
SO
O
Shift resister data output
11
DATA
I
Data input
12
CLK
I
Lock
13
STB
I
Strobe
14
CLR
I
Data clear
15
VSS
GND
16
EMPHASIS
O
FM emphasis changeover
H=100k
L=50kHz
17
ECHO A
O
ECHO Control
H=ON
L=OFF
18
ECHO B
O
ECHO Control
H=ON
L=OFF
19
POWER
O
Power supply control
H=ON
L=OFF
20
VDD
Power supply (5V)
7-2 Expander IC port description
7-2-1 Display section NJU7314(X14 : IC5)
7-2-2 DECK section NJU7314(X28:IC6)
RXD-790/V860(k)
COVER(
97.11.28
3:55
AM
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