Ic Block Diagrams - Goodmans GMS880 Service Manual

TA2180FN
FM RF
RFout V
CC
24 23
FMRF
1 2
FM
RF FM
ANTENNA
GND RFin
BFP
IC BLOCK DIAGRAM
OSC BUFF OUT
AM FM AM
RFin OSC OSC
22 21 20
AM
OSC
FM
OSC
BUFF
1/1 or
1/16
BUFF
LEVEL
DET
AM
MIX
FM
MIX
3 4 5
AM
MIX V
CC
LOW
OUT
CUT
PSC SW
OPEN: 1/1
V : 1/16
CC
OSC ST
TEST
OUT LED
19 18 17
AF
BUFF
ST
AM
DET
AGC
AMIF FMIF
6 7 8
AM IF FM IF GND
IN IN
GND : MONO
OPEN: ST
DET MPX
OUT IN LPF1
16 15 14
AF
VCO
DECODE
DIVIDE
FM
SM/MO
DET
FM/AM
MUTE
9 10 11
AGC QUAD R-OUT
R-OUT L-OUT
GND : AM
OPEN : FM
V
CC
LPF2
13
12
L-OUT
17