SATA Interfacewww.seagate.com
Word | Description | Value |
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48 | Reserved | 0000H |
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49 | Standard Standby timer, IORDY supported and may be dis- | 2F00H |
abled | ||
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50 | 0000H | |
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51 | PIO | 0200H |
52 | Retired | 0200H |
53 | Words | 0007H |
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54 | Number of current logical cylinders | xxxxH |
55 | Number of current logical heads | xxxxH |
56 | Number of current logical sectors per logical track | xxxxH |
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| Current capacity in sectors | xxxxH |
59 | Number of sectors transferred during a Read Multiple | xxxxH |
or Write Multiple command | ||
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| Total number of |
|
| (see Section 2.1 for related information) |
|
| *Note: The maximum value allowed in this field is: |
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0FFFFFFFh (268,435,455 sectors, 137Gb). Drives with | 0FFFFFFFh* | |
| capacities over 137Gb will have 0FFFFFFFh in this field and |
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| the actual number of |
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| words |
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| |
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62 | Retired | 0000H |
63 | Multiword DMA active and modes supported | xx07H |
(see note following this table) | ||
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64 | Advanced PIO modes supported (modes 3 and 4 sup- | 0003H |
ported) | ||
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65 | Minimum multiword DMA transfer cycle time per word (120 | 0078H |
nsec) | ||
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| Recommended multiword DMA transfer cycle time per |
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66 | word | 0078H |
| (120 nsec) |
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67 | Minimum PIO cycle time without IORDY flow control (240 | 00F0H |
nsec) | ||
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68 | Minimum PIO cycle time with IORDY flow control (120 nsec) | 0078H |
0000H | ||
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75 | Queue depth | 001FH |
76 | Serial ATA capabilities | xxxxH |
77 | Reserved for future Serial ATA definition | xxxxH |
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78 | Serial ATA features supported | xxxxH |
79 | Serial ATA features enabled | xxxxH |
32 | Barracuda XT SATA Product Manual, Rev. D |