JVC KD-LH7R Service Manual page 37

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3 7 63 1515 0
SAA6579T-X(IC71):RDS detecter
1.Pin layout
QUAL
DATA
Vref
MUX
V
dd
GND
CIN
SCOUT
2.Block diagram
4
8
7
5
3
TE
L 13942296513
3.Pin function
Pin No.
10
11
12
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13
14
.
15
16
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CLK
1 16
T57
2
15
OSCO
3
14
OSCI
4
13
5 V
12 dd
GND
6 11
TEST
7 10
MODE
8 9
ANTI-
57 kHz
ALIASING
BANDPASS
FILTER (8th ORDER)
COSTAS LOOP
CLOCKED
VARIABLE AND
COMPARATOR
FIXED DIVIDER
VP1
CLOCK
REFERENCE
REGERATION
VOLTAGE
AND SYNC
6
Symbol
1 QUAL Quality indication output
2 DATA RDS data output
3 Vref Reference voltage output (0.5VDDA)
4 MUX Multiolex signal input
5 Vdd +5V supply voltage for analog part
6 GND Ground for analog part (0V)
7 CIN Subcarrier input to comparator
8 SCOUT Subcarrier output of reconstruction filter
9 MODE Oscllator mode / test control input
TEST Test enable input
GND Ground for digital part (0V)
Vdd +5V supply voltage for digital part
OSCI Oscillator input
x ao
y
OSCO Oscillator output
i
T57 57 kHz clock signal output
CLK RDS clock output
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8
13 14
OSCILATOR
RECONSTRUCTION
AND
FILTER
DIVIDER
BIPHASE
SYMBOL
DECODER
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
Q Q
3 6 7 1 3
9 10
Description
u163
.
2 9 9 4 2 8
12
1
QUALITY BIT
GENERATOR
2
DIFFERENTIAL
DECODER
15
15
1 5 0 5 8 2 9 9 4
11
m
co
KD-LH7R
9 9
2 8 9 9
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