Sony MZ-R37 specifications 22, • IC801 CXP740010 SYSTEM CONTROL

• IC801 CXP740010 (SYSTEM CONTROL)

Pin No.	Pin name	I/O	Pin Description
1	CLKCS	O	Not used (Chip select output to real time clock).
2	XRST	O	Reset output. L : Reset
3	WRPWR	O	Laser power switching signal output.
4	TX	O	Write data transfer timing output.
5	SDI2	I	Serial data input.
6	SDO2	O	Serial data output.
7	SCK2	O	Serial clock output.
8	RFSW	O	Power control output.
9	SSB	I/O	SSB data signal input and output.
10	SSB SCK	I/O	SSB clock signal input and output. (Not used (Open).)
11	DTCK	I/O	Remote control data signal input/output.
12	SPCK	—	Not used (Open).
13	WP	I	Wake-up signal input from remote control key and this unit key.
14	OPEN	I	Detecting switch for opening and closing of the upper cover. L : Close
15	CLOCK	I	Not used (CLOCK SET switch input).
16	NI MH CHG	O	NI MH charge control output.
17	SLEEP	O	Sleep signal output.
18	T.MARK	I	T.MARK (Track mark) switch input.
19	REC	I	Not used (REC switch input).
20	PROTECT	I	Disc write protect switch. H : Protect
21	HOLD	I	HOLD switch input (This unit). L : HOLD
22	SYNC REC	I	SYNCHRO REC switch input.
23	D. B. B	I	DIGITAL MEGA BASS slide switch input.
24	XLINEDET	I	LINE IN (OPTICAL) detection input. L : LINE IN
25	INMU1	O	INMU signal output.
26	XTEST	I	Test mode terminal. L : Test mode
27	XDCIN	I	Not used (Open). (DC input detect. L : DC IN)
28	KANA SE L	—	Not used (Open).
29	XPHOTO SW	O	ON/OFF control signal output of PHOTO circuit.
30	XP CONT	—	Not used (Open). (Power control output. L : ON)
31	X2VCONT	—	Not used (Open). (Outputs H while operating with a lithium battery. 2V power control
			signal output. L : ON)
32	XREC LED	—	Not used (Open). (REC LED control. L : ON)
33	MODE2	O	REC drive (IC901) control signal output.
34	MODE1	O
35	XNIMH CHG	—	Not used (Open). (Battery charger control signal output. L : Charge)
36	XLCD ON	O	LCD ON/OFF control. L : ON
37	INMU0	O	INMU signal output.
38	MRST	I	Microprocessor reset input.
39	VSS	—	Ground.
40	XTAL	—	System clock (12 MHz).
41	EXTAL	—	System clock (12 MHz).
42	LCD DS	O	LCD communication strobe signal output to LCD driver.
43	LCD XC D	O	Com/data select signal output.
44	LCD DATA	O	LCD data output.
45	LCD SCK	O	Serial clock output.
46	CHG MNT	I	Battery charge voltage minitor input.
47	INLS	I	Detecting switch for internal circuit of sleding. L : Internal circuit
48	HIDC MNT	I	Voltage monitor DC input.
49	KEY R	I	Remote control key input.

– 22 –