saa6579t-v1 NXP Semiconductors, saa6579t-v1 Datasheet - Page 3

• Manufacturer Part Number: saa6579t-v1
• Description: Radio Data System Rds Demodulator
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
2001 Sep 25
handbook, full pagewidth
Radio Data System (RDS) demodulator
Via pin MODE two different crystal frequencies can be used.
LOW
HIGH
MODE
signal
MPX
2.2 F
5 V
560 pF
330 pF
0.1 F
SCOUT
V DDA
MUX
V ref
CIN
CRYSTAL CLOCK
4.332 MHz
8.664 MHz
7
4
8
5
3
COMPARATOR
REFERENCE
ALIASING
VOLTAGE
CLOCKED
FILTER
ANTI-
6
V SSA
V
P1
Fig.1 Block diagram and application circuit.
REGENERATION
(8th ORDER)
COSTAS LOOP
VARIABLE AND
FIXED DIVIDER
BANDPASS
AND SYNC
57 kHz
CLOCK
RECONSTRUCTION
SAA6579
3
FILTER
4.332/8.664 MHz
TEST LOGIC AND OUTPUT
47 pF
SELECTOR SWITCH
MODE
9
DECODER
BIPHASE
SYMBOL
OSCILLATOR
13
DIVIDER
OSCI
AND
10
TEST
14
OSCO
2.2 k
82 pF
DIFFERENTIAL
GENERATOR
QUALITY BIT
DECODER
+5 V
11
V SSD
V
12
DDD
Product specification
0.1 F
SAA6579
16
15
2
1
QUAL
RDDA
RDCL
MEH162
T57