JVC KS-LX200R service manual SAA6579T-X IC51 RDS demodulator, IC-PST600M/G/-W IC702 System reset

KS-LX200R

SAA6579T-X (IC51) : RDS demodulator

1. Pin layout

1

2

3

4

5

6

7

8

	2. Pin function
		NoPin.	Symbol	Function
16		1	QUAL	Quality indication output
		2	RDDA	RDS data output
15
		3	Vref	Reference voltage output (0.5VDDA)
14
		4	MUX	Multiplex signal input
13		5	VDDA	+5V supply voltage for analog part
12		6	VSSA	Ground for analog part (0V)
11		7	CIN	Sub carrier input to comparator
		8	SCOUT	Sub carrier output of reconstruction filter
10
		9	MODE	Oscillator mode / test control input
9
		10	TEST	Test enable input
		11	VSSD	Ground for digital part (0V)
		12	VDDD	+5V supply voltage for digital part
		13	OSCI	Oscillator input
		14	OSCO	Oscillator output
		15	T57	57kHz clock signal output
		16	RDCL	RDS clock output

3. Block diagram

OSCI OSCO VDDD

					13	14	12
	4	ANTI-	57kHz		OSCILLATOR		QUALITY BIT	1	QUAL
MUX		ALIASING	BAND PASS	RECONSTRUCTION
					AND
		FILTER	(8th ORDER)	FILTER	DIVIDER		GENERATOR
SCOUT	8
CIN	7	CLOCKED	COSTAR LOOP	BIPHASE			DIFFERENTIAL	2	RDDA
			VARIABLE AND	SYMBOL
		COMPARATOR	FIXED DIVIDER	DECODER			DECODER
VDDA	5	Vp1						16	RDCL
Vref	3	REFERENCE	CLOCK	TEST LOGIC AND OUTPUT				15
			REGENERATION						T57
		VOLTAGE		SELECTOR SWITCH
			AND SYNC
		6		9		10	11
		VSSA		MODE	TEST		VSDD
IC-PST600M/G/-W (IC702) : System reset

1 IN

Co1

OP1

3 Vout

2 OUT

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