JVC KS-FX725R service manual SAA6579T-XIC761RDS Detector, Rdcl

KS-FX725R

SAA6579T-X(IC761):RDS Detector

1.Terminal Layout				2.Pin Function
				Pin	Symbol	I/O	Function
				No.
QUAL	1	16	RDCL	1	QUAL	-	Non connect
RDDA	2	15	T75
				2	RDDA	O	RDS data output
Vref	3	14	OSCO
				3	Vref	O	Reference voltage output
MUX	4	13	OSC1
				4	MUX	I	Multiplex signal input
VDDA	5	12	VDD
				5	VDDA	-	+5V Supply voltage for analog
GND	6	11	GND
				6	GND	-	Ground for analog part (0V)
CIN	7	10
			TEST
				7	CIN	I	Sub carrier output of reconstruction filter
SCOUT	8	9	MODE
				8	SCOUT	O	Ground for digital part (0V)
				9	MODE	-	Ground for digital part (0V)
				10	TEST	-	Ground for digital part (0V)
				11	GND	-	Ground for digital part (0V)
				12	VDD	-	+5V supply voltage for digital part
				13	OSC1	I	Oscillator input
				14	OSC0	O	Oscillator output
				15	T75	-	Non connect
				16	RDCL	O	RDS clock output

3.Block Diagram

						13	14	12
4	ANI-	5kHz	RECONSTRUCTION			OSCILLATOR		DUALITY BIT
	ALLUDING	BAND PASS					AND		1
				FILTER				GENERATOR
	FILTER	(8th ORDER)				DIVIDER
8
7	CLOCKED	COSTAS LOOP				BIPHASE		DIFFERENTIAL	2
		VARIABLE AND				SYMBOL
	COMPARATOR							DECODER
		FIXWD DIVIDER				DECODER
5									16
3	REFERENCE	CLOCK			TEST LOGIC AND OUTPUT				15
		REGENERATION
	VOLTAGE					SELECTOR SWITCH
		AND SYNC
	6					9	10	11

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