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Command Specifications
3 - 8 C141-E167
k. Device Serial Number field
The value following byte 4 of the device serial number in the VPD information is indicated in
this field. Higher order digits which do not contain valid numbers are filled with ASCII code
spaces (X '20').
l. Clocking field
This field indicates the code which shows the clocking method. The definition of the code is as
shown below.
"Clocking" Bit 3 2 Description
0 0 Indicates the device server supports only ST
0 1 Indicates the device server supports only DT
10Reserved
1 1 Indicates the device server supports ST and DT
m. QAS (Quick Arbitrate Supported) bit
This bit of one indicates that the device server supports the quick arbitrate feature. A value of
zero indicates that the device server does not support the quick arbitrate feature.
n. IUS (Information unit supported) bit
This bit of one indicates that the device server supports information units. A value of zero
indicates that the device server does not support information units.
o. Version Descriptor field
This field is provided for identifying upto eight standards to which the Device claims
conformance.
The IDD shall be indicated as shown below.
BYTE Code Description
58 to 59 OX00, OX40 SAM2
60 to 61 OX0B, OX54 SPI4 T10/1356 rev07
62 to 63 OX01, 0X3C SPC ANSI X3.301: 1997
64 to 65 OXS01, OX9B SBC T10/0996 rev08C
66 to 67 OX00, OX00 -
68 to 69 OX00, OX00 -
70 to 71 OX00, OX00 -
72 to 73 OX00, OX00 -