Seagate ST800FM0012 Pulsar Serial ATA Product Manual - Page 36

Description if bit is set to 1, Word 49, Word 50, Word 69, Word 76, Word 78

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Note. See the bit descriptions below for words 49, 50, 69, 76, 78, 82-86, 119 and 119-120 of the Identify Drive data. Description (if bit is set to 1) Bit Word 49 8 DMA Supported 9 Shall be set to 1 10 IORDY May be disabled 11 IORDY supported 13 Standby Timer Values supported Bit Word 50 14 Shall be set to 1 Bit Word 69 5 Shall be set to 1 6 Optional ATA 28-bit commands supported 8 Download Microcode DMA supported 9 Set Max Password DMA and Set Max Unlock DMA supported 10 Write Buffer DMA Supported 11 Read Buffer DMA Supported 12 DEVICE CONFIGURATION IDENTIFY DMA and DEVICE CONFIGURATION SET DMA are supported 13 Long Physical Sector Alignment Error Reporting Control is supported 14 Deterministic read after Trim is supported Bit Word 76 0 Shall be cleared to zero 1 Supports SATA Gen1 Signaling Speed (1.5Gb/s) 2 Supports SATA Gen2 Signaling Speed (3.0Gb/s) 3-7 Reserved for Serial ATA 8 Supports the NCQ feature set 9 Supports receipt of host initiated power management requests 10 Supports Phy Event Counters 11 Supports Unload while NCQ commands are outstanding 12 Supports NCQ priority information 13-15 Reserved for Serial ATA Bit Word 78 0 Shall be cleared to zero 1 Device supports non-zero buffer offsets 2 Device supports DMA Setup auto-activation 3 Device supports initiating power management 4 Device supports in-order data delivery 5 Reserved for Serial ATA 30 Pulsar Product Manual, Rev. A

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30
Pulsar Product Manual, Rev. A
Note.
See the bit descriptions below for words 49, 50, 69, 76, 78, 82-86, 119 and 119-120 of the Identify Drive data.
Description (if bit is set to 1)
Bit
Word 49
8
DMA Supported
9
Shall be set to 1
10
IORDY May be disabled
11
IORDY supported
13
Standby Timer Values supported
Bit
Word 50
14
Shall be set to 1
Bit
Word 69
5
Shall be set to 1
6
Optional ATA 28-bit commands supported
8
Download Microcode DMA supported
9
Set Max Password DMA and Set Max Unlock DMA supported
10
Write Buffer DMA Supported
11
Read Buffer DMA Supported
12
DEVICE CONFIGURATION IDENTIFY DMA and
DEVICE CONFIGURATION SET DMA are supported
13
Long Physical Sector Alignment Error Reporting Control is supported
14
Deterministic read after Trim is supported
Bit
Word 76
0
Shall be cleared to zero
1
Supports SATA Gen1 Signaling Speed (1.5Gb/s)
2
Supports SATA Gen2 Signaling Speed (3.0Gb/s)
3-7
Reserved for Serial ATA
8
Supports the NCQ feature set
9
Supports receipt of host initiated power management requests
10
Supports Phy Event Counters
11
Supports Unload while NCQ commands are outstanding
12
Supports NCQ priority information
13-15
Reserved for Serial ATA
Bit
Word 78
0
Shall be cleared to zero
1
Device supports non-zero buffer offsets
2
Device supports DMA Setup auto-activation
3
Device supports initiating power management
4
Device supports in-order data delivery
5
Reserved for Serial ATA