Seagate DiamondMax 21 Manual download pdf (Page 40)

34 DiamondMax 21 PATA Product Manual, Rev. B

Note. Advanced Power Management (APM) and Automatic Acoustic Management (AAM) features are not supported

Note. See the bit descriptions below for words 63, 88, and 93 of the Identify Drive data:

129–159 Seagate-reserved xxxx

160–254 ATA-reserved 0000

255 Integrity word xxA5

Description (if bit is set to 1)

Bit Word 63

0 Multiword DMA mode 0 is supported.

1 Multiword DMA mode 1 is supported.

2 Multiword DMA mode 2 is supported.

8 Multiword DMA mode 0 is currently active.

9 Multiword DMA mode 1 is currently active.

10 Multiword DMA mode 2 is currently active.

Bit Word 88

0 Ultra DMA mode 0 is supported.

1 Ultra DMA mode 1 is supported.

2 Ultra DMA mode 2 is supported.

3 Ultra DMA mode 3 is supported.

4 Ultra DMA mode 4 is supported.

5 Ultra DMA mode 5 is supported.

8 Ultra DMA mode 0 is currently active.

9 Ultra DMA mode 1 is currently active.

10 Ultra DMA mode 2 is currently active.

11 Ultra DMA mode 3 is currently active.

12 Ultra DMA mode 4 is currently active.

13 Ultra DMA mode 5 is currently active.

Bit Word 93

13 1 = 80-conductor cable detected, CBLID above VIH

0 = 40-conductor cable detected, CBLID below VIL

Word Description Value

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 49 50

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Seagate DiamondMax 21 Manual Page 40