JVC KD-SH9101 Service Manual page 49

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