Seagate ST340014A Barracuda 7200.7 PATA Product Manual - Page 33
ATA interface
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4.0 ATA interface These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports ATA programmed input/output (PIO) modes 0-4; multiword DMA modes 0-2, and Ultra DMA modes 0-5. The drive also supports the use of the IORDY signal to provide reliable high-speed data transfers. You can use a daisy-chain cable to connect two drives to a single AT host bus. For detailed information about the ATA interface, refer to the draft of AT Attachment with Packet Interface Extension (ATA/ATAPI-6), NCITS T13 1410D, subsequently referred to as the Draft ATA-6 Standard. 4.1 ATA interface signals and connector pins Figure 1 on page 26 summarizes the signals on the ATA interface connector that the drive supports. For a detailed description of these signals, refer to the Draft ATA-6 Standard. Barracuda 7200.7 Product Manual, Rev. N 25