IDE & ATA interface definition

IDE & ATA interface definition IDE is the abbreviation of integrated drive electronics, developed by Compaq and Western Digital companies. The new IDE is named ata as at bus attachment, the IDE interface looks like a 40-pin on the device and motherboard side. Pin name dir description
1/Reset
2 Gnd ground
3 dd7 data 7
4 dd8 data 8
5 DD6 data 6
6 dd9 data 9
7 dd5 data 5
8 dd10 data 10
9 DD4 data 4
10 dd11 Data 11
11 DD3 data 3
12 dd12 data 12
13 dd2 data 2
14 dd13 data 13
15 DD1 data 1
16 dd14 data 14
17 dd0 DATA 0
18 dd15 data 15
19 Gnd ground
20 key-key
21 N/C-not connected
22 Gnd ground
23/Iow write strobe
24 Gnd ground
25/ior read strobe
26 Gnd ground
27 io_ch_rdy
28 ale address latch enable
29 N/C-not connected
30 Gnd ground
31 irqr interrupt request
32/iocs16? Io chipselect 16
33 da1 address 1
34 N/C-not connected
35 da0 address 0
36 da2 address 2
37/ide_cs0 (1f0-1f7)
38/ide_cs1 (3f6-3f7)
39/active LED driver
40 Gnd ground ATA, short for at bus attachment, is a new IDE interface developed by Conner, Seagate, and Western Digital. the ATA interface looks like a 40 pin on the device and motherboard. Pin name dir description
1/Reset
2 Gnd ground
3 dd7 data 7
4 dd8 data 8
5 DD6 data 6
6 dd9 data 9
7 dd5 data 5
8 dd10 data 10
9 DD4 data 4
10 dd11 Data 11
11 DD3 data 3
12 dd12 data 12
13 dd2 data 2
14 dd13 data 13
15 DD1 data 1
16 dd14 data 14
17 dd0 DATA 0
18 dd15 data 15
19 Gnd ground
20 key-key (PIN missing)
21 dmarq? DMA request
22 Gnd ground
23/diow write strobe
24 Gnd ground
25/Dior read strobe
26 Gnd ground
27 iordy I/O ready
28 spsync: csel? Spindle sync or cable select
29/dmack? DMA acknowledge
30 Gnd ground
31 intrq interrupt request
32/iocs16? Io chipselect 16
33 da1 address 1
34 pdiag? Passed diagnostics
35 da0 address 0
36 da2 address 2
37/ide_cs0 (1f0-1f7)
38/ide_cs1 (3f6-3f7)
39/active LED driver
40 Gnd ground ATA 44 interface ATA is the abbreviation of at bus attachment, developed by Conner, Seagate and Western Digital. It is the new IDE interface, and Ata 44 interface is the ATA interface plus power supply, etc, it is mainly used for portable computers with a 2.5 "hard drive. The appearance on the device and motherboard side is 44 pin. Pin-defined ata 44 interface 1-40 is the same as ATA, 41-44 is defined as: PIN name dir description
41 + 5vl + 5 VDC (logic)
42 + 5 VM + 5 VDC (motor)
43 Gnd ground
44/type (0 = ATA)