JVC KS-LH4R Service Manual page 28

KS-LH4R
QQ
3 7 63 1515 0
SAA6579T-X (IC51) : RDS
1.Pin layout
QUAL
1
RDDA
2
Vref 3
MUX
4
V
ODA 5
V
SSA 6
CIN
7
SCOUT
8
2.Block diagram
ANTI-
4
ALIASING
FILTER
8
7
CLOCKED
COMPARATOR
5
3
REFERENCE
VOLTAGE
TE
L 13942296513
3.Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
www
13
14
15
16
1-28
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RDCL
16
T57
15
OSCO
14
OSCI
13
V
12 0DD
V
11 SSD
TEST
10
MODE
9
57 kHz
RECONSTRUCTION
BANDPASS
FILTER
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXED DIVIDER
VP1
CLOCK
REGERATION
AND SYNC
6
Symbol
QUAL Quality indication output
RDDA RDS data output
Vref Reference voltage output (0.5VDDA)
MUX Multiolex signal input
VDDA +5V supply voltage for analog part
VSSA Ground for analog part (0V)
CIN Subcarrier input to comparator
SCOUT Subcarrier output of reconstruction filter
MODE Oscllator mode / test control input
TEST Test enable input
VSSD Ground for digital part (0V)
VDDD +5V supply voltage for digital part
OSCI Oscillator input
x ao
y
OSCO Oscillator output
. i
T57 57 kHz clock signal output
RDCL RDS clock output
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8
13 14
OSCILATOR
QUALITY BIT
AND
GENERATOR
DIVIDER
BIPHASE
DIFFERENTIAL
SYMBOL
DECODER
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
2
15
15
1 5 0 5 8 2 9 9 4
11
m
co
9 9
2 8 9 9