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pinout (распиновка)

ATA/IDE Internal connector

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ATA=AT bus Attachment.. Developed by Western Digital, Conner & Seagate


40 pin IDC MALE connector  at the controller & peripherals
Pin Name Dir Description
1 /RESET --> 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

Nominally called the IDE (Integrated Drive Electronics) bus; how ever it"s more correctly known as the ATA (Advanced Technology Attachment) [Parallel bus] specification [ATA Bus]. The IDE bus is used in Personal Computers [PCs] as a hard-drive or peripheral bus to interconnect the PC mother board and a hard drive. With the introduction of Serial ATA [SATA], Parallel ATA is now being called PATA. The specification has been up-graded a number of times each building on the past specification. ATA-1 and 2 were single documents, but like SCSI, after ATA-2 the specification was divided into a number of different documents. Data is passed Single-Ended. Only the 40 pin connectors are referenced below, which are used on 3.5-inch drives, but there is also a 50 pin connector used on 2.5-inch drives. The 50 pin connector adds the power and Master/Slave functions. PCMCIA uses a 68 pin connector. Most maintain backward compatibility, keeping in mind the cable changed. A graph showing the difference between ATA and Ultra ATA timing is shown on the Strobe page. The IDE, ATA connector pinout is listed in the table below. There are a number of versions: [Serial ATA: is listed on its own page.]

ATA-1 (IDE), [Obsolete] 8.3MBytes/sec, 8 or 16 bit data width, 40 pin data ribbon cable/connector. With a maximum of 2 devices on the bus. Using PIO Modes 0, 1 or 2. Preformed no bus error correction.

ATA-2 (EIDE, or Fast ATA), [Obsolete] 16.6MBytes/sec, 8 or 16 bit data width, 40 pin data ribbon cable/connector. With a maximum of 4 devices on the bus. Using PIO Modes 0, 1, 2, 3, or 4

ATA-3, 16MBytes/sec, 16 bit data width, 40 pin data ribbon cable/connector. Using PIO Modes 0, 1, 2, 3, or 4 and Multiword DMA modes 1 and 2. Runs with 120nS Strobes (rising edge to rising edge). Includes CRC.
ATAPI (ATA Packet Interface)is the CD-ROM side of the interface. It uses the same connector as ATA, and adds 1 for analog and 1 for digital audio.

ATA-4 Ultra-ATA/33, 33MBytes/sec, 16 bit data width, 40 pin data ribbon cable/connector. Using PIO Modes 0, 1, 2, 3, or 4 and Multiword DMA modes 1 and 2 and Ultra DMA modes 0, 1, and 2. Runs with 120nS Strobes (rising edge to rising edge), but used both edges of the Strobe producing an effective 60nS Strobe rate. 33MBps Transfer speed = [(1/120nS) x 2 bytes x 2]. Where 120nS cycle time is 4 clock periods at 30nS each. Added CRC checking.

ATA-5 Ultra-ATA/66, 66MBytes/sec, 16 bit data width 40 pin data connector/80 pin cable, with the additional 40 new pins being Ground. The new cable allows ATA/66 to run at a faster rate then ATA/33. Using PIO Modes 0, 1, 2, 3, or 4 and Multiword DMA modes 1 and 2 and Ultra DMA modes 0, 1, 2, 3 and 4. Runs with 60nS Strobes (rising edge to rising edge), but uses both edges of the Strobe producing an effective 30nS Strobe rate. 66MBps Transfer speed = [(1/60nS) x 2 bytes x 2]. Where 60nS cycle time is 2 clock periods at 30nS each.

ATA-6 Ultra-ATA/100, 100MBytes/sec,16 bit data width 40 pin data connector/80 pin cable, with the additional 40 new pins being Ground. Using PIO Modes 0, 1, 2, 3, or 4 and Multiword DMA modes 1 and 2 and Ultra DMA modes 0, 1, 2, 3, 4 and 5. 100MBps Transfer speed = [(1/40nS) x 2 bytes x 2]. Where 40nS cycle time is 2 clock periods at 20nS each

ATA-7 Ultra-ATA/133, 133MBytes/sec,16 bit data width 40 pin data connector/80 pin cable, with the additional 40 new pins being Ground. Using PIO Modes 0, 1, 2, 3, or 4 and Multiword DMA modes 0, 1 and 2 and Ultra DMA modes 0, 1, 2, 3, 4, 5 and 6. 133MBps Transfer speed = [(1/30nS) x 2 bytes x 2]. Where 30nS cycle time is 2 clock periods at 15nS each

Serial ATA: (Ver 1.0) High Speed Serialized AT Attachment
Serial version of the IDE [ATA] spec. Uses a 4 conductor cable with two differential pairs [Tx/Rx], plus an additional three grounds pins and a separate power pin. Data runs at 150MBps [1.5GHz] using 8B/10B encoding and 250mV signal swings.
ATA-# interface for disk drives; defines the Physical layer, Electrical layer and Signaling protocol. The speed of data transfer depends on the Transfer mode used. There are 3 main Transfer modes: PIO, Multiword DMA, and Ultra DMA. All transfer rates listed above are best case [Mulit-word/DMA transfers].

PIO Modes: 0 [3.3MB/s], 1 [5.2MB/s], 2 [8.3MB/s], 3 [11.1MB/s], 4 [16.7MB/s]
Multiword DMA Modes: 0 [4.2MB/s], 1 [13.3MB/s], 2 [16.7MB/s]
Ultra DMA Modes: 0 [16.7MB/s], 1 [25.0MB/s], 2 [33.3MB/s], 3 [44.4MB/s], 4 [66.7MB/s], 5 [100.0MB/s]

Power (+5 / +12volts) is supplied over a four pin connector (unless the 50-pin connector is used). There are a number of power (down) modes defined: Active, Idle, Standby, and Sleep.
Active: normal drive operation.
Idle: the electronics power down but still receives commands.
Standby: the drive spins down and the electronics power down.
Sleep: every thing is powered down, the electronics will not respond except for a power reset.

The early specifications defined the data cable as a normal 40 pin ribbon cable with a 40 pin IDC connector. The latest standard(s) define the same 40 pin connector, but have increased the ribbon to 80 pins - the additional 40 pins being dedicated to ground pins. Data transfers are made at either 8 or 16 bits.
The normal PC cables have three connectors, one for the mother board (at one end) and two for device attachment. One at the opposite end, the other about 6 inches away.


40 pin IDC FEMALE connector  at the cable

Note: Direction is Controller relative Devices (Harddisks).

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