Kenwood RXD-M65V-H Service Manual page 12

RXD-M65V-H/M65V-N
6-4 PB/REC Equalizer System IC : HA12230NT (X28, IC1)
Pin No. Pin Name
1 VREF
2 GND
3 BINR
4 AINR
5 PBNFR
6 PBEQR
7 EQOR
8 TAIR
9 PBOOR
10 MAOUT
11 MAI
12 IREF
13 RECIR
14 RIP
15 RECOR
16 RECOL
17 VCC
18 RECIL
19 MUTE
20 A120/70
21 A/B
22 B 1/11
23 PBOL
24 TAIL
25 EQOL
26 PBEQL
27 PBNFL
28 AINL
29 BINL
30 RECRET
6-5 PLL Frequency Synthesizer LSI : LC72131M(Tuner Assy IC2)
Pin No. Pin Name
1 X IN
2 CE
3 DI
4 CL
5 DO
6 B01
7 B02
8 B03
9 B04
10,12 I01, I02
11 IF IN
13 AM IN
14 FM IN
15 VDD
16 PD
AIN
17, 18
AOUT
19 VSS
20 X OUT
12
CIRCUIT DESCRIPTION
I/O
- Reference voltage.
- Ground pin.
I PB B deck right channel input.
I PB A deck right channel input.
- PB EQ. feed back.
O Equalizer right channel output (70u).
O Equalizer right channel output (120u).
I Tape right channel input.
O PB right channel output.
O MS amplifier output (unused).
I MS amplifier input (unused).
I Equalizer reference current input.
I Rec equalizer right channel input.
O NAB output.
O Rec equalizer right channel output.
O Rec equalizer left channel output.
- Power supply.
I Rec equalizer left channel input.
I Mode control input.
I Mode control input (connected to GND).
I Mode control input.
I Mode control input (connected to GND).
O PB left channel output.
I Tape left channel input.
O Equalizer left channel output (120u).
O Equalizer left channel output (70u).
- PB EQ. feed back.
I PB A deck left channel input.
I PB B deck left channel input.
- Rec return.
I/O
I Crystal resonator connection.
I Chip enable.
I Input serial data.
Used as the synchronization clock when serial data is input to the DI(pin 3), or
I
when serial data is output DO(pin 5).
O Outputs serial data.
• Dedicated output pins.
• The output states are determined by B01 to B04 in the serial data.
O
"Data" = 0 : Open "Data" = 1 : Low
• These pins go to the open state after the power-on reset.
Pins used for both input and output.
I/O The input or output state is determined by bits I0C1and I0C2 in the serial data.
Data = 0 : Open, Data = 1: Low
I IF count input.
I Local oscillator signal input.
I Local oscillator signal input.
- Power supply.
O PLL charge pump output.
I
The MOS transistor used for the PLL active low-pass filter.
O
- Ground.
O Crystal resonator connection.
Pin Description
Pin Description