ATA 50 to 40 pin (notebook CD-ROM)

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ATA (40) Pin	CD-ROM (50) Pin	Name	Description
	1	Audio Left	audio left
	2	Audio Right	audio right
	3	Audio ground	audio ground
2	4	GND	Ground
1	5	/RESET	Reset
4	6	DD8	Data 8
3	7	DD7	Data 7
6	8	DD9	Data 9
5	9	DD6	Data 6
8	10	DD10	Data 10
7	11	DD5	Data 5
10	12	DD11	Data 11
9	13	DD4	Data 4
12	14	DD12	Data 12
11	15	DD3	Data 3
14	16	DD13	Data 13
13	17	DD2	Data 2
16	18	DD14	Data 14
15	19	DD1	Data 1
18	20	DD15	Data 15
17	21	DD0	Data 0
21	22	DMARQ	DMA Request
19	23	GND	Ground
25	24	/DIOR	Read Strobe
23	25	/DIOW	Write Strobe
22	26	GND	Ground
27	27	IORDY	I/O Ready
29	28	/DMACK	DMA Acknowledge
31	29	INTRQ	Interrupt Request
32	30	/IOCS16	IO ChipSelect 16
33	31	DA1	Address 1
34	32	PDIAG	Passed Diagnostics
35	33	DA0	Address 0
36	34	DA2	Address 2
37	35	/IDE_CS0	(1F0-1F7)
38	36	/IDE_CS1	(3F6-3F7)
39	37	/ACTIVE - /DASI - DASP	Led driver
+5V	38	+5V	+ 5 volts power
+5V	39	+5V	+ 5 volts power
+5V	40	+5V	+ 5 volts power
+5V	41	+5V	+ 5 volts power
+5V	42	+5V	+ 5 volts power
24	43	GND	Ground
26	44	GND	Ground
30	45	GND	Ground
40	46	GND	Ground
28	47	Device Cfg	Spindle Sync or Cable Select
GROUND	48	GND	Ground
	49	reserved	Vendor Unique
	50	reserved	Vendor Unique

UNKNOWN connector
to the CD-ROM

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Last updated at Sat Jun 25 2005 (�� )	�� ?