Western Digital caviar blue xl500s Technical Reference Manual page 42

ATA Command Set
WORD
53
54-58
59
60-61
62
63
64
65
66
67
68
69-70
71-74
75
76
77
78
34
FIELD DESCRIPTION
Additional Words Valid
Bit 15-8: Free-fall Control Sensitivity
00h = Vendor's recommended setting
01h-FFh = Sensitivity level. A larger number is a more sensitive
setting.
Bit 7-3: Reserved
Bit 2: 1 = the fields reported in word 88 are valid
0 = the fields reported in word 88 are not valid
Bit 1: 1 = the fields reported in words (64-70) are valid
0 = the fields reported in words (64-70) are not valid
Bit 0: Obsolete
Obsolete
Current Blocking Factor
Bit 15-9: Reserved
Bit 8: If set, Multiple sector setting is valid
Bit 7-0: Current setting for number of logical sectors that shall
be transferred per DRQ data block on READ/WRITE Multiple
commands
Total number of user addressable logical sectors (Dword)
Obsolete
Multi-Word DMA Transfer Mode Supported
Bit 15-11: Reserved
Bit 10: If set, Multiword DMA mode 2 is selected
Bit 9: If set, Multiword DMA mode 1 is selected
Bit 8: If set, Multiword DMA mode 0 is selected
Bits 0-7: Multiword DMA mode 2 and below are supported
Advanced PIO Modes Supported
Bit 15-8: Reserved
Bits 7-0: PIO Modes supported
Min. Multi-Word DMA Transfer Cycle Time per word (ns)
Manufacturer Recommended Multi-Word DMA Cycle Time (ns)
Min. PIO Transfer Cycle Time without flow control (ns)
Min. PIO Transfer Cycle Time with flow control (ns)
Reserved
Reserved for the IDENTIFY PACKET DEVICE command.
Queue Depth
Bit 15-5: Reserved
Bit 4-0: Maximum queue depth - 1
Serial ATA Capabilities
Bit 15-11: Reserved for Serial ATA
Bit 10: If set, supports Phy event counters
Bit 9: If set, supports receipt of host initiated
powermanagement requests
Bit 8: If set, supports native command queuing (NCQ)
Bit 7-3: Reserved for future SATA signaling speed grades
Bit 2: If set, supports Serial ATA Gen-2 signaling speed (300
MB/s)
Bit 1: If set, supports Serial ATA Gen-1 signaling speed (150
MB/s)
Bit 0: Cleared to 0
Reserved for Serial ATA
Serial ATA Features Supported
Bit 15-7: Reserved for Serial ATA
Bit 6: If set, device supports software settings preservation
Bit 5: Reserved for Serial ATA
Bit 4: If set, device supports in-order data delivery
Bit 3: If set, device supports initiating power management.
Bit 2: If set, device supports DMA Setup auto-activation
Bit 1: If set, device supports non-zero buffer offsets
Bit 0: Cleared to 0
RELEASED 10/21/10 (WD CONFIDENTIAL)
XL500S
VALUE
0007h
0
01XXh
XXXXh
0
XX07h
0003h
120
120
120
120
0
0
001F
0001111100000110b
0
0000000001000100b
2679-701211-A06