Sony MDS-JE630 service manual MAIN BOARD IC501 M30624MG-223FPSYSTEM CONTROLLER

•MAIN BOARD IC501 M30624MG-223FP (SYSTEM CONTROLLER)

Pin No.		Pin Name	I/O			Description
1, 2		NC	O	Not used (open)
3		C1	O	Monitor output terminal for the test		C1 error rate is output when test mode
4		ADER	O	Monitor output terminal for the test		ADER is output when test mode
5		SQSY	I	Subcode Q sync (SCOR) input from the CXD2656R (IC121)
				“L” is input every 13.3 msec	Almost all, “H” is input
6		RMC	I	Remote control signal input from the remote control receiver (IC761)
7		A1 IN	I	Sircs remote control signal input of the CONTROL A1II
8		BYTE	I	External data bus line byte selection signal input			“L”: 16 bit, “H”: 8 bit (fixed at “L”)
9		CNVSS	—	Ground terminal
10		XT-IN	I	Sub system clock input terminal (32.768 kHz)			Not used (open)
11		XT-OUT	O	Sub system clock output terminal (32.768 kHz)			Not used (open)
12		S.RST	I	System reset signal input from the LA5632 (IC431) and RESET switch (S401) “L”: reset
				For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
13		XOUT	O	Main system clock output terminal (10 MHz)
14		GND	—	Ground terminal
15		XIN	I	Main system clock input terminal (10 MHz)
16		+3.3V	—	Power supply terminal (+3.3V)
17		NMI	I	Non-maskable interrupt input terminal (fixed at “H” in this set)
18		DQSY	I	Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2656R (IC121)
				“L” is input every 13.3 msec	Almost all, “H” is input
19		P.DOWN	I	Power down detection signal input terminal “L”: power down, normally: “H”
20	KEYBOARD CLK		I	Keyboard serial clock signal input terminal
21	KEYBOARD DATA		I	Keyboard serial data input terminal
22		NC	O	Not used (open)
23		XINT	I	Interrupt status input from the CXD2656R (IC121)
24 to 26		NC	O	Not used (open)
27	KEYBOARD CONT		O	Keyboard control signal output terminal “H”: off
28 to 30		NC	O	Not used (open)
31		SWDT	O	Writing data output to the CXD2656R (IC121) and A/D, D/A converter (IC321)
32		SRDT	I	Reading data input from the CXD2656R (IC121)
33		SCLK	O	Serial clock signal output to the CXD2656R (IC121) and A/D, D/A converter (IC321)
34		FLCS	O	Chip select signal output to the FL/LED driver (IC771)
35		FLDATA	O	Serial data output to the FL/LED driver (IC771)
36		NC	O	Not used (open)
37		FLCLK	O	Serial data transfer clock signal output to the FL/LED driver (IC771)
38, 39		NC	O	Not used (open)
40	ADA LATCH		O	Serial data latch pulse signal output to the A/D, D/A converter (IC321)
41		NC	I	Not used (fixed at “L”)
42		JOG1	I	Jog dial pulse input from the rotary encoder (S713 - AMS ±) (B phase input)
43		JOG0	I	Jog dial pulse input from the rotary encoder (S713 - AMS ±) (A phase input)
44		NC	O	Not used (open)
45		A1 OUT	O	Sircs remote control signal output of the CONTROL A1ΙΙ
46		NC	I	Not used (fixed at “H”)
47		NC	O	Not used (open)
48		DA RST	O	Reset signal output to the A/D, D/A converter (IC321)				“L”: reset
49		MUTE	O	Audio line muting on/off control signal output terminal				“L”: line muting on

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