IC DESCRIPTION
♦
I601
- CX A2104S (US AUDIO M ULTIPLEXIN G D ECO DER )
1. PIN DESC RIPTIO N
SYM BOL
PIN
DESCRIPTION
R O U T
1
T V O U T right channel output pin.
L O U T
2
T V O U T left channel output pin.
S D A
3
S erial data I/O pin.
S C L
4
S erial clock I/O pin.
D .G N D
5
D igital block ground.
M AIN IN
6
Input the (L+R) signal from M A IN O U T (pin 7)
M AIN O U T
7
(L+ R ) sig n a l o u tp u t p in .
P C IN T 1
P C IN T 2
8
9
S tereo block P LL loop filter integrating pin.
P LIN T
10
P ilot cancel circuit loop filter integrating pin.
C O M P IN
11
A udio m ultiplexing signal input pin.
V G R
12
B and gap reference output pin.(connect a 10
µ
F capacitor betw een this pin and G N D .)
IR E F
13
S et the filter and V C O reference current.
G N D
14
A nalog block G N D .
S AP TC
15
S et the tim e constant for the S A P carrier detection circuit.
V cc
16
S upply voltage pin.
S U B O U T
17
(L-R ) signal output pin.
S TIN
18
Input the (L-R ) signal from S U B O U T (pin 17).
N O IS E T C
19
S et the tim e constant for the noise detection circuit.(connect a 47
µ
F C apacitor B etw een this pin and
G N D .)
S AP O U T
20
S A P FM detector output pin.
S AP IN
21
Input the (S AP ) signal from S A P O U T (pin 20).
V E
22
Variable de-em phasis integrating pin.(connect a 2700pF capacitor and a 3.3k
Ω
R esistor in series
betw een this pin and G N D .)
V EW G T
23
W eight the variable de-em phasis control effective value detection circuit.
V ET C
24
D eterm ine the restoration tim e constant of the variable de-em phasis control
E ffective value detection circuit.
V EO U T
25
Variable de-em phasis output pin.(connect a 4.7
µ
F non-polar capacitor betw een Pins 25 and 26.)
V C A IN
26
V C A input pin.
V C ATC
27
D eterm ine the restoration tim e constant of the VC A control effective value D etection circuit.
V C AW G T
28
W eight the V C A control effective value detection circuit.(connect a 1
µ
F capacitor A nd a 3.9k
Ω
resistor in series betw een this pin and G N D .)
N .C
29
N .C
S O U T
30
N .C
Summary of Contents for DTH-25G1FST/FSP/FS
Page 1: ......
Page 7: ...BLOCK DIAGRAM...
Page 25: ...TROUBLE SHOOTING CHARTS 1 NO POWER...
Page 61: ...EXPLODED VIEW DTH 29G3...
Page 62: ...EXPLODED VIEW DTH 29G5...
