JVC KD-S733R Service Manual page 28

KD-S733R/KD-S731R
SAA6579T-X (IC71) : RDS
1.Pin layout
QUAL RDCL
1 16
RDDA T57
2 15
Vref OSCO
3
14
MUX OSCI
4
13
V V
5 12
ODA 0DD
V V
SSA 6 11 SSD
CIN TEST
7 10
SCOUT MODE
8
9
3.Pin function
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1-28
2.Block diagram
ANTI-
4
ALIASING
FILTER
8
7
CLOCKED
COMPARATOR
5
VP1
3
REFERENCE
VOLTAGE
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
OSCO Oscillator output
T57 57 kHz clock signal output
RDCL RDS clock output
57 kHz
RECONSTRUCTION
BANDPASS
FILTER
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXED DIVIDER
CLOCK
TEST LOGIC AND OUTPUT
REGERATION
SELECTOR SWITCH
AND SYNC
Function
13 14 12
OSCILATOR
QUALITY BIT
AND
GENERATOR
DIVIDER
BIPHASE
DIFFERENTIAL
SYMBOL
DECODER
DECODER
9 10 11
1
2
15
15