Sony MDS-PC2 service manual IC501 System Control M30620MC-406FPMAIN board

• IC501 System Control (M30620MC-406FP) (MAIN board)

Pin No.	Pin Name	I/O	Function
1, 2	NC	O	Not used (Fixed at “L”)
3	C1ER	O	C1 error rate voltage output (Fixed at “L”) (Not used)
4	ADER	O	AD error rate voltage output (Fixed at “L”) (Not used)
5	SQSY	I	ADIP sync or subcode Q sync input from CXD2654R
6	RMC	I	Remote controls
7	A1 IN	I	A1 Control input (Fixed at “L”)
8	BYTE	I	Data bus changed input (Fixed at “L”)
9	CNVSS	—	Ground
10	XIN-T	O	Not used (Fixed at “L”)
11	XOUT-T	O	Not used (Fixed at “L”)
12	S.RST	I	System rest input
13	XOUT	O	Main clock output (7.0MHz)
14	GND	—	Ground
15	XIN	I	Main clock input (7.0MHz)
16	+3.3V	—	+3.3V power supply
17	NMI	I	(Fixed at “H”)
18	DQSY	I	Digital in sync input
19	P.DOWN	I	Power down detection input “L”: Power down
20	KEYBOARD CLK	O	Not used
21	KEYBOARD DATA	O	Not used
22	BEEP OUT	—	Not used
23	XINIT	I	Interrupt status input from CXD2654R
24 to 27	NC	O	Not used
28	L3 CLOCK	O	Serial clock signal output to IC301
29	NC	O	Not used
30	LC DATA	O	Serial data signal input to IC301
31	SWDT	O	Writing data signal output to the serial bus
32	SRDT	I	Reading data signal input from the serial bus
33	SCLK	O	Clock signal output to the serial bus
34	FLCS	O	Chip select signal output to the display driver
35	FLDATA	O	Serial data signal output to the display driver
36	NC	O	Not used (Fixed at “L”)
37	FLCLK	O	Serial clock signal output to the display driver
38 to 41	NC	O	Not used
42, 43	JOG1, JOG0	I	Not used
44	NC	O	Not used
45	A1 OUT	O	A1 output
46	NC	O	Not used
47	L3 MODE	O	Serial mode signal output to IC301
48	DA.RST	O	Not used Reset: “L”
49	MUTE	O	DA line out muting output Mute: “L”
50	STB	O	Strobe signal output to the power supply circuit Power supply ON: “H”, stand by: “L”
51	CHACK IN	I	Detection input from the chucking-in switch “L”: Chucking
52	NC	I	Not used (Fixed at “L”)
53	PACK-OUT	I	Detection input from the loading out switch. Loaded out position: “L”, Others: “H”
54	LDIN	I	Loading motor control input
55	LDOUT	O	Loading motor control output
56	LD-LOW	O	Loading motor voltage control output Low voltage: “H”
57, 58	NC	O	Not used (Fixed at “L”)
59	REC-P	I	Detection signal input from the recording position detection switch

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