Table 6:

Supported commands

 

 

 

 

 

Command name

Command code

Supported

 

 

 

 

Verify (10)

 

2Fh

Y

 

 

 

BYTCHK bit

 

Y

 

 

 

 

Verify (12)

 

AFh

N

 

 

 

 

Verify (16)

 

AFh

N

 

 

 

 

Verify (32)

 

7Fh/000Ah

N

 

 

 

 

Write (6)

 

0Ah

Y

 

 

 

 

Write (10)

 

2Ah

Y

 

 

 

 

DPO bit

 

 

Y

 

 

 

 

FUA bit

 

 

Y

 

 

 

 

Write (12)

 

AAh

N

 

 

 

 

Write (16)

 

8Ah

N

 

 

 

 

Write (32)

 

7Fh/000Bh

N

 

 

 

Write and Verify (10)

2Eh

Y

 

 

 

 

DPO bit

 

 

Y

 

 

 

Write and Verify (12)

AEh

N

 

 

 

Write and Verify (16)

8Eh

N

 

 

 

Write and Verify (32)

7Fh/000Ch

N

 

 

 

Write Buffer (modes 0, 2, supported)

3Bh

Y (non-SED drives only)

 

 

 

 

Write Buffer

 

3Bh

 

 

 

 

Firmware Download option (modes 5, 7, Ah and Bh) [3]

 

Y (non-SED drives only)

 

 

 

Firmware Download option (modes 4, 5, 7)

 

Y (SED drives only)

 

 

 

Write Long (10)

3Fh

Y

 

 

 

Write Long (16)

9Fh/11h

N

 

 

 

Write Same (10)

41h

Y

 

 

 

 

PBdata

 

 

N

 

 

 

 

LBdata

 

 

N

 

 

 

Write Same (16)

93h

N

 

 

 

Write Same (32)

7Fh/000Dh

N

 

 

 

 

XDRead

 

52h

N

 

 

 

 

XDWrite

 

50h

N

 

 

 

 

XPWrite

 

51h

N

 

 

 

 

[1]Constellation drives can format to 512, 520 or 528 bytes per logical block.

[2]Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.

[3]Reference Mode Sense command 1Ah for mode pages supported.

[4]Y = Yes. Command is supported.

N = No. Command is not supported.

A = Support is available on special request.

Constellation SAS Product Manual, Rev. E

51

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Seagate ST9500431SS, ST9500430SS, ST9500432SS manual Supported commands