JVC KD-S821R Service Manual page 25

SAA6579T-X(IC71):RDS detecter
1.Pin layout
QUAL
1
DATA
2
Vref
3
MUX
4
vdd
5
GND
6
CIN
7
SCOUT
8
2.Block diagram
ANTI-
4
ALIASING
FILTER
8
7
CLOCKED
COMPARATOR
5
3
REFERENCE
VOLTAGE
6
3.Pin function
Symbol
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CLK
16
T57
15
OSCO
14
OSCI
13
vdd
12
GND
11
TEST
10
MODE
9
57 kHz
RECONSTRUCTION
BAND PASS
FILTER
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXED DIVIDER
VP1
CLOCK
REGERATION
AND SYNC
QUAL Quality indication output
DATA RDS data output
Vref Reference voltage output (0.5VDDA)
MUX Multiplex signal input
vdd +5V supply voltage for analog part
GND Ground for analog part (0V)
CIN Sub carrier input to comparator
SCOUT Sub carrier output of reconstruction filter
MODE Oscillator mode / test control input
TEST Test enable input
GND Ground for digital part (0V)
vdd +5V supply voltage for digital part
OSCI Oscillator input
OSCO Oscillator output
T57 57 kHz clock signal output
CLK RDS clock output
13 14
OSCILLATOR
QUALITY BIT
AND
GENERATOR
DIVIDER
BIPHASE
DIFFERENTIAL
SYMBOL
DECODER
DECODER
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
9 10 11
Description
KD-S821R
12
1
2
15
15
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