JVC MX-GT91R Service Manual page 39

LC72723 (IC3) : RDS demodulation
1. Pin Assignment
VREF
1
MPXIN 2
Vdda
3
Vssa
4
FLOUT 5
CIN
6
TBS
7
XOUT
8
2.Block diagram
VREF
Vdda
REFERENCE
VOLTAGE
Vssa
ANTIALIASING
MPXIN
FILTER
TEST
TEST
3. Pin functions
Pin
Symbol I/O
No.
1
O
VREF
MPXIN I
2
Vdda
3
Vssa
4
O
5
FLOUT
6 CIN I
TEST I
7
8 XOUT O
9 I
XIN
Vssd
10
11 Vddd
I
12 MODE
13 I
RST
14 RDDA O
RDCL I/O
15
RDS-ID/READY output (negative polarity)
RDS-ID
16
O
READY
RDS-ID/READY
16
RDCL
15
14 RDDA
RST
13
MODE
12
Vddd
11
Vssd
10
XIN
9
Top View
FLOUT CIN
VREF
57kHz
BPF
SMOOTHING
(SCF)
FILTER
CLK(4.332MHz)
OSC
XIN
XDUT
Reference voltage output (Vdda/2)
Baseband (multiplexed) signal input
Analog power supply (+5V)
Analog ground
Sub carrier input (filter output)
Subcarrier input (comparator input)
Test input
Crystal oscillator output (4.332MHz)
Crystal oscillator input (external reference input)
Digital ground
Digital power supply
Read mode setting (0:master,1:slave)
RDS-ID/RAM reset (positive polarity)
RDS data output
RDS clock output (master mode)/RDS clock input (slave mode)
CLOCK
PLL
RECOVERY
(57kHz)
(1187.5kHz)
DATA
DECODER
RAM
(128-bits)
RDS-ID
DETECT
Function
MX-GT91R
Vddd
Vssd
RDDA
RDCL
MDDE
RST
RDS-ID/
READY
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