Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
258
sense of Invalid Field in Parameter List.
- Phy Test Pattern SATA bit set to 0 indicates that the phy transmits the phy test pattern as a SAS phy. If this bit
is set to 1, Check Condition status will be returned with a sense key of Illegal Request and additional sense of
Invalid Field in Parameter List
- Phy Test Pattern SSC field specifies the SSC modulation type which the phy test pattern will be transmitted. If
an unsupported SSC modulation type is specified, Check Condition status will be returned with a sense key of
Illegal Request and additional sense of Invalid Field in Parameter List.
Table 239 Phy Test Pattern SSC Code
Phy Test Pattern
SSC Code
Description
00h
No SSC
01h
Center-spreading SSC (Not supported)
10h
Down-spreading SSC
11h
Reserved
- Phy Test Pattern Dwords Control controls whether the bytes in the Phy Test Pattern Dwords field are sent as
control characters or data characters.
Table 240 Phy Test Pattern Dwords Control
Phy Test Pattern
Dwords Control
Description
00h
Each byte in the Phy Test Pattern Dwords field shall be sent as a data character (i.e., Dxx.y)
without scrambling.
08h
The fifth byte in the Phy Test Pattern Dwords field shall be sent as a control character (i.e.,
Kxx.y). Each other byte shall be sent as a data character without scrambling.
80h
The first byte in the Phy Test Pattern Dwords field shall be sent as a control character. Each
other byte shall be sent as a data character without scrambling.
88h
The first and fifth bytes in the Phy Test Pattern Dwords field shall be sent as a control
character. Each other byte shall be sent as a data character without scrambling.
All others
Reserved
- Phy Test Pattern Dwords contains the two Dwords that are sent during a TWO_DWORDS test pattern.