JVC UX-M3R Service Manual page 26

UX-M3R
TA2104AN (IC101) : 1chip AM/FM, MPX tuner system
1. Terminal layout
RFGND 1 24 FMRF OUT
FMRF IN 2 23 RF VCC
AM 3 22 AMRF IN
MIX OUT 4 21 FM OSC
VCC 5 20 AM OSC
AMIF IN 6 19 OSC OUT
FMIF IN 7 18 ST LED
GND 8 17 IF REQ
AGC 9 16 DET OUT
QUAD 10 15 MPX IN
R OUT 11 14 LPF1
L OUT 12 13 LPF2
3. Block diagram
FM RF AM
RF OUT VCC RF IN
24 23 22
AM
MIX
FMRF
1 2 3
RF FM AM
GND RF IN
TC9257F (IC102) : PLL frequency synthesizer
1. Terminal layout
XT 1 20 FM VT
XT 2 19 AM VT
PRD 3 18 B1
CLK 4 17 B0
DATA 5 16 IF
N.C 6 15 GND
TUNER 7 14 FM OSC
CD 8 13 AM OSC
AUX 9 12 VDD
ST MONO 10 11 EE
3. Block diagram
FM L
AMP
14
FM OSC 1/2
FM H HF
13
AM OSC
2
XT
OSC
CIRCUIT
1
XT
5
DATA
4
CLK
3
PRD
1-26
2. Pin function
PIN
No. Symbol I/O
1 RFGND -
2 FMRF IN I
3 AM I
4 MIX OUT O
5 VCC -
6 AMIF IN I
7 FMIF IN I
8 GND -
9 AGC I
10 QUAD I
11 R OUT O
12 L OUT O
FM AM OSC ST IF DET
OSC OSC OUT LED REQ OUT
21 20 19 18 17 16
AM
IF
OSC
REQ
ST SW
AF
FM
BUFF
OSC
FMRF
IF
BUFF
LEVEL
FMRF
1/8
DET
AM
DET
AGC
FM
MIX
AMIF FMIF
4 5 6 7 8 9
MIX VCC AM FM GND AGC
OUT IF IN IF IN
2. Pin function
PIN
No. Symbol I/O
1 XT I
2 XT O
3 PRD I
4 CLK I
5 DATA I/O
6 N.C O
7 TUNER O
8 CD O
9 AUX O
10 ST MONO I/O
VDD
12
PSC
2 MODULUS 4bit SWALLOW POWER ON
PRESCALER COUNTER
RESET
12bit PROGRAMMABLE COUNTER
FM MODE LF
12
4
REFERENCE COUNTER MAX
15
OSC
4
1ms
24bit REGISTER
24bit SHIFT REGISTER
4
TEST
5
ADDRESS
24 22
DECODER
10
24bit REGISTER
4 4
20bit BINARY COUNTER
OUTPUT PORT
UNIVERSAL COUNTER CONTROL
OT-4
XT 1ms
6 7 8 9
N.C CD
TUNER AUX
PIN
Function
No.
Ground terminal for RF 13
Input of FMRF signal 14
AM low frequency cut 15
Output of FM/AM RF mix 16
Power supply terminal 17
Input of AMIF signal 18
Input of FMIF signal 19
Ground terminal 20
AGC voltage input terminal 21
OSC terminal for FM DET. 22
Output R-channel 23
Output L-channel 24
MIX
LPF1 LPF2
IN
15 14 13
AF
VCD
DECODE
DIVIDE
ST/MO
FM
FM/AM
DET
MUTE
10 11 12
QUAD R-OUT L-OUT
Function
Crystal oscillator pins
Crystal oscillator pins
Period signal input
Clock signal input
Serial data input/output
General-purpose output port
General-purpose output port
General-purpose output port
General-purpose output port
General-purpose I/O port
GND
15
RESET
TRI-STATE
19
AM VT
BUFFER
TRI-STATE
20
FM VT
BUFFER
OT4
UNLOCK
10
ST MONO
5
11
EE
16
IF
AMP
17
B0
AMP
GATE
18
B1
Symbol I/O Function
LPF2 I FM/AM switch
LPF1 I Stereo/monoral switch
MPX IN I Multiplex signal input
DET OUT O AM/FM detection output
IF REQ O IF out/REQ out
ST LED O Stereo indicator output
OSC OUT O PLL data bus for FM or AM
AM OSC - AM local oscillation circuit
FM OSC - FM local oscillation circuit
AMRF IN I Input of AMRF signal
RF VCC - Power supply terminal for RF
FMRF OUT O Output of FMRF signal
PIN
Symbol I/O Function
No.
11 EE I/O General-purpose I/O port
12 VDD - Power supply pin
13 AM OSC I Programmable counter input
14 FM OSC I Programmable counter input
GND Ground pin
15 -
IF General-purpose I/O port
16 I/O
B0 General-purpose I/O port
17 I/O
B1 General-purpose I/O port
18 I/O
AM VT Phase comparator output
19 O
FM VT Phase comparator output
20 O