WD Green MB500M-6Gb
AT Command Set
2679-771422-A00
RELEASED 5/2/13 (WD CONFIDENTIAL)
29
75
Queue Depth
Bit 15-5: Reserved
Bit 4-0: Maximum queue depth - 1
001Fh
76
Serial ATA Capabilities
Bit 15: If set, Supports Read Log DMA Ext
Bit 14: If set, Supports Device Automatic Partial to Slumber
transitions
Bit 13: If set, Supports Host Automatic Partial to Slumber
transitions
Bit 12: Supports Native Command Queuing priority
information
Bit 11: Supports Unload while NCQ commands
outstanding
Bit 10: Supports Phy event counters
Bit 9: Supports receipt of host-initiated interface power
management requests
Bit 8: Supports Native Command Queuing (NCQ)
Bit 7-3: Reserved for future Serial ATA signaling speed
grades
Bit 2: 1= Supports Serial ATA Gen2 signaling speed
(3 Gb/s)
Bit 1: 1= Supports Serial ATA Gen1 signaling speed
(1.5 Gb/s)
Bit 0: Shall be cleared to zero
1111 1111 0000 0110b
FF06h
77
Serial ATA Additional Capabilities
Bit 15 - 7: Reserved
Bit 6: If set, Supports Receive and Send FPDMA Queued
Commands
Bit 5: If set, Supports NCQ Queue Management Command
Bit 4: If set, Supports NCQ Streaming
Bit 3 - 1: Coded value indicating negotiated Serial ATA
signal Speed
Bit 0: Shall be cleared to zero
000Xh
78
Serial ATA Features Supported
Bit 15-8: Reserved for Serial ATA
Bit 7: If set, device supports NCQ Autosense
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 zero
0000 0000 0100 1100b
004Ch
79
Serial ATA Features Enabled
Bits 15-7: Reserved for Serial ATA
Bit 6: If set, software settings preservation enabled
Bit 5: Reserved for Serial ATA
Bit 4: If set, In-order data delivery enabled
Bit 3: If set, device initiated power management enabled
Bit 2: If set, DMA Setup Auto-activation enabled
Bit 1: If set, non-zero buffer offsets enabled
Bit 0: Cleared to zero
0000 0000 0X00 XX00b
80
Major Version Number
Bit 15-10: Reserved
Bit 9: if set, supports ACS-2
Bit 8: if set, supports ATA8-ACS
Bit 7: if set, supports ATA/ATAPI-7
Bit 6: if set, supports ATA/ATAPI-6
Bit 5: if set, supports ATA/ATAPI-5
Bit 4 –1: Obsolete
Bit 0: Reserved
03FEh
81
Minor Version Number
0000h
