TX-SR701/E
IC BLOCK DIAGRAMS AND DESCRIPTIONS
LC72723M(RDS demodulator)
PIN ARRANGEMENT
BLOCK DIAGRAM
REFERENCE
VOLTAGE
ANTIALIASING
FILTER
SMOOTHING
FILTER
57kHz
BPF
(SCF)
TEST
PLL
(57kHz)
VREF
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
RAM
(128-bit)
RDS-ID
DETECT
OSC
CLK(4.332MHz)
+5V
+5V
Vdda
Vssa
MPXIN
TEST
XIN
XOUT
RDS-ID/
READY
RST
MODE
RDCL
RDDA
Vssd
Vddd
CIN
FLOUT
VREF
1
VREF
16
2
MPXIN
15 RDCL
RDS-ID/READY
3
Vdda
14 RDDA
4
Vssa
13 RST
5
FLOUT
12 MODE
6
CIN
11 Vddd
7
TEST
10 Vssd
8
XOUT
9 XIN
LC72723
LC72723M
Top view
+
Pin No.
Terminal
Function
1
VREF
Reference voltage output
2
MPXIN
Multiplex signal input
5
FLOUT
Sub-carrier output (Filter output)
6
CIN
Sub-carrier input(Comparator output)
3
Vdda
Analog power source (+5V)
4
Vssa
Analog grpund
8
XOUT
4.332MHz Crystal connection pin
9
XIN
Crystal or external reference signal input
7
TEST
12
MODE
Read mode setting
13
RST
RDS-ID/RAM reset
14
RDDA
RDS data output
15
RDCL
RDS clock output (Master mode)/input
16
RDS-ID/
READY
RDS-ID/READY output
11
Vddd
10
Vssd
Digital ground
Test input
Slave mode)
Digital power supply
MM1512(Y-C mixer circuit)
6
1
2
3
4
5
Bias
Clamp
-6dB
DRV
12dB
SAG
OUT
Vcc
YIN
GND
CIN
V+
SW2
SW1
SW5
Vout1
Vout2
Vout3
SW3
SW4
GND
V-
Vin1
Vin2
Vin3
Vin4
Vin5
20k
20k
20k
20k
S2
S3
S4
20k
20k
20k
6dB
Amp
75Ohm
Driver
6dB
Amp
75Ohm
Driver
6dB
Amp
75Ohm
Driver
S5
S7
S6
S1
5
6
7
8
1
2
3
4
9
16
10
11
15
12
13
14
NJM2595M(5-Input, 3-Output Video Switch)
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