JVC KS-FX8R Service Manual page 22

KS-FX8R
SAA6579T-X(IC71):RDS detector
1.Terminal Layout
QUAL 1
RDDA 2
Vref 3
MUX 4
VDDA 5
GND 6
CIN 7
SCOUT 8
3.Block Diagram
ANI-
4
ALLUDING
FILTER
8
CLOCKED
7
COMPARATOR
5
REFERENCE
3
VOLTAGE
6
1-22
2.Pin Function
Pin
Symbol
No.
16
RDCL
1
15
T75
2
14
OSCO
3
13
OSC1
4
12
VDD
5
11
GND
6
10
TEST
7
9
MODE
8
SCOUT
9
10
11
12
13
14
15
16
5kHz
RECONSTRUCTION
BAND PASS
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXWD DIVIDER
CLOCK
REGENERATION
AND SYNC
I/O
Non connect
-
QUAL
RDS data output
O
RDDA
Reference voltage output
O
Vref
Multiplex signal input
I
MUX
+5V Supply voltage for analog
-
VDDA
Ground for analog part (0V)
-
GND
Sub carrier output of reconstruction filter
I
CIN
Ground for digital part (0V)
O
Ground for digital part (0V)
-
MODE
Ground for digital part (0V)
-
TEST
Ground for digital part (0V)
-
GND
+5V supply voltage for digital part
-
VDD
Oscillator input
I
OSC1
Oscillator output
O
OSC0
Non connect
-
T75
RDS clock output
O
RDCL
13
OSCILLATOR
FILTER
BIPHASE
SYMBOL
DECODER
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
9
Function
12
14
DUALITY BIT
AND
GENERATOR
DIVIDER
DIFFERENTIAL
DECODER
11
10
1
2
16
15