Specifications

Figures
Figure 1. Pin assignments for the 40-pin male ATA interface connec-
tor used on 5.25- and 3.5-inch drives . . . . . . . . . . . 3
Figure 2. 40-pin male ATA interface connector for 5.25- and 3.5-inch
drives . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 3. 40-pin female ATA interface connector for cables attached
to 5.25- and 3.5-inch drives . . . . . . . . . . . . . . . . 4
Figure 4. Pin assignments for the 50-pin male ATA interface connec-
tor used on 2.5- and 1.8-inch drives . . . . . . . . . . . . 5
Figure 5. 50-pin male ATA interface connector for 2.5-inch drives . 6
Figure 6. Master and slave drives attached to ATA connector embed-
ded in system board . . . . . . . . . . . . . . . . . . . . 7
Figure 7. Master and slave drives attached to ATA host adapter . . 7
Figure 8. ATA Interface signals and signal pins (power pins not
shown) . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9. Power mode transition diagram . . . . . . . . . . . . . 57
Figure 10. Alternate power mode transition diagram . . . . . . . 61
Figure 11. Timing diagram signal conventions . . . . . . . . . . 65
Figure 12. PIO data transfer timing (to and from drive) . . . . . . 66
Figure 13. I/O Ready (IORDY) timing . . . . . . . . . . . . . . . 67
Figure 14. Single-word DMA transfer timing . . . . . . . . . . . . 68
Figure 15. Multiword DMA transfer timing . . . . . . . . . . . . . 69
Figure 16. System power-on and reset timing . . . . . . . . . . . 70
vi ATA Interface Reference Manual, Rev. C