Aiwa NSX-S50 Service Manual page 27

Tuner stereo detected input/CD SQ CLOCK output.
RDS data input/CD data output.
Pin Name
I-STEREO/O-SQCLK
I-RDS-DATA/O-DATA|
O-CDCE
O-CDCLK
Pin No.
97
CD CE output.
CD CLOCK output.
IC, LC72131
Pin No.
A crystal oscillator (7.2MHz) is connected between these pins.
Pin Name
Vo
X
XOUT
nc | -
G
te
oe
po |
bBSo
Not used.
To enable the IC. Active "H".
Digital data input from CPU (LC866548V-5E54) when relevant key is operated.
Active "H",
To clock in the data DI.
Digital data output to CPU (LC866548V-5E54).
IN
Cc
CE
CL
T-BASE Outputs a reference clock signal (8Hz) for the clock.
MONO / BEAT Outputs "H" when MONO / BEAT is switched.
Output "L" or "H" as follows:
= 2 BAND 3 BAND
FM /SW ,
MW/SW
IF-MUTE
IF-IN
To control internal counter.
General purpose counter input.
Receives "L" when station is tuned.
PLL charge pump output.
J
Cc
AZ
tI
_ wa
AM-IN
FM-IN
a
o
—
wile
Ss z 5
A-IN
The MOS transistor for PLL active low pass filter.
A-OUT
N -
N
< " "
—34-