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Description of major ICs
SAA6588 (IC191) : RDS detector
1.Terminal Layout
MRO
1
20
NC
2
19
GND
3
18
OSCO
4
17
OSCI
5
16
VSSD
6
15
VDDD
7
14
DAVN
8
13
SDA
9
12
SCL
10
11
3.Block Diagram
SCOUT
57 kHz
MPX
16
8th ORDER
BAND-PASS
13
AFIN
PAUSE
DETECTOR
LVIN
20
POWER
VDDA
14
SUPPLY
AND RESET
15
VSSA
2.Pin Function
Pin
Symbol
No.
NC
1
MRO
2
NC
CIN
3
GND
SCOUT
4
OSCO
Vref
5
OSCI
6
MPX
VSSD
7
VDDD
VSSA
8
DAVN
VDDA
9
SDA
NC
10
SCL
11
NC
GND
12
GND
NC
13
NC
14
VDDA
15
VSSA
16
MPX
17
Vref
18
SCOUT
19
CIN
20
NC
CIN
19
18
CLOCK
COMPARATOR
MULTI-PATH
DETECTOR
TEST
CONTROL
17
3
Vref
TCON
I/O
O
Multi-path rectifier output
-
Non connect
I
Test control input pin
O
Oscillator output
I
Oscillator input
-
Digital ground (0V)
-
Digital power supply (5V)
O
Data available output (active LOW)
I/O
IC-bus serial data I/O
I
IC-bus serial clock input
-
Non connect
-
Connect to ground
-
Non connect
-
Analog power supply (5V)
-
Connect to ground
I
Multiplex input signal
O
Reference voltage output
O
Band-pass filter output
O
Comparator output
I
Level input
RDS/RDBS
DEMODULATOR
SIGNAL QUALITY
DETECTOR
OSCILLATOR
IC-BUS SLAVE
AND CLOCK
TRANSCEIVER
1
4
5
MRO
OSCI
OSCO
RX-7010RBK/RX-7012RSL
Function
VDDD
7
DAVN
8
RDS/RDBS
DECODER
PSWN
11
2
MPTH
INTERFACE
REGISTER
9
SDA
10
SCL
12
6
VSSD
MAD
1-9
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