Pioneer SX-SW404 Service Manual page 68

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QQ
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LC72725M (MAIN ASSY : IC5701)
A
• RDS Decorder IC
Pin Arrangement (Top view)
RDS-ID/READY
RDDA
VREF
MPXIN
Vdda
Vssa
FLOUT
B
CIN
Block Diagram
Vdda
REFERENCE
C
VOLTAGE
Vssa
ANTIALIASING
MPXIN
TE
L 13942296513 FILTER
TEST TEST
D
Pin Function
No. Pin Name
1 RDS-ID/READY
2 RDDA
3 VREF
E
4 MPXIN
5 Vdda
6 Vssa
7 FLOUT
8 CIN
9 TEST
10 MODE
www
11 Vssd
12 Vddd
13 XIN
14 XOUT
15 RST
F
16 RDCL
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1 16 RDCL
2 45 RST
3 14 XOUT
4 13 XIN
5 12 Vddd
6 11 Vssd
7 10 MODE
8 9 TEST
VREF FLOUT CIN
57KHz
BPF
SMOOTHING
(SCF)
FILTER
CLK(4.332MHz)
OSC
XIN XOUT
I/O
O RDS-ID/READY output (positive polarity) (LC72723 : negative polarity)
O RDS data output
O Reference voltage ouput (Vdda/2)
I Baseband (multiplexed) signal input
−
Analog power supply
−
Analog ground
Ο
Subcarrier output (filter output)
Ι
Subcarrier input (comparator input)
I Test Input
I Read mode setting(0:master, 1:slave)
−
Digital ground
−
Digital power supply(+3V)
x ao
y
I Crystal oscillator input (external reference signal input)
O Crystal oscillator output (4.332MHz)
. i
I RDS-ID/RAM reset (positive polarity)
I/O RDS clock output (master mode) / RDS clock input (slave mode)
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8
+
PLL
(57KHz)
-
Q Q
3 6 7
Pin Function
u163
SX-SW404
3
4
2 9 9 4
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
1 3 1 5 0 5 8 2 9
RAM
(128bit)
RDS-ID
DETECT
m
co
.
4
2 8
9 9
Vddd
Vssd
RDDA
RDCL
9 4 2 8 9 9
MODE
RST
RDS-ID/
READY