Kenwood RXD-M35 Service Manual page 12

RXD-M35
QQ
3 7 63 1515 0
6-5 RDS Demodulator IC : BU1923F (IC103)
Pin No. Pin Name
1 QUAL
2 RDS DATA
3 VREF
4 MUX
5 VDD1
6 VSS1
7 VSS3
8 CMP
9 T1
10 T2
11 VSS2
12 VDD2
13 XI
14 XO
15 N.C.
16 RDS CLK
6-6 Electronic Volume System IC : LC75342M (IC301)
Pin No. Pin Name
1 V.DATA
2 V.CE
3 VSS
4 TEST
TE
5 LOUT
L 13942296513
26 ROUT
6 , 7 LBASS2,LBASS1
24.25 RBASS1,RBASS2
8 LTRE
23 RTRE
9 LE IN
22 RE IN
10 LS OUT
21 RS OUT
11,12 L CD, L TUNER
13,14 L TAPE, L AUX
17,18 R AUX, R TAPE
19,20 R TUNER, R CD
15,16,27 N.C.
28 VREF
29 VDD
30 V.CLK
www
.
12
CIRCUIT DESCRIPTION
I/O
O Output for signal quality indication.
O Demodulation data output.
I Reference voltage input.
I Composite signal input.
- Analog power supply.
- Analog GND.
- Analog GND.
I Comparator.
I Test pin.
I Test pin.
- Digital GND.
- Digital power supply.
I Crystal oscillation circuit input.
O Crystal oscillation circuit output.
- Unused.
I/O Demodulation clock.
I/O
I Serial data input pin for control.
I Chip enable pin.
- Ground pin.
- Electronic volume control pin. (To be connected to the VSS.)
O Volume + equalizer output pins.
- Bass-band filter comprising capacitor and resistor connection pins.
- Capacitor connection pins comprising treble band filter.
I Volume + equalizer input pins.
O Input selector output pins.
I Input signal pins.
- To be open or connected to VSS.
- Reference voltage for analog ground.
- Power supply pin.
I Clock input pin for control.
x ao u163
y
i
2 9
8
Description
Description
Q Q
3 6 7 1 3 1 5
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9