Table of Contents
Advertisement
Serial Attached SCSI (SAS) Interface
Such encoding also greatly increases the likelihood of detecting any single or
multiple bit errors that may occur during transmission and reception of
information. In addition, some of the control characters of the transmission code
contain a distinct and easily recognizable bit pattern called a comma pattern
which assists a receiver in achieving character and dword alignment on the
incoming bit stream.
1.3.2 Link reset sequence
The link reset sequence consists of the phy reset sequence and the identification
sequence. The phy reset sequence consists of the out of band (OOB) sequence
and speed negotiation sequence. The hard reset sequence is performed only when
the HARD_RESET primitive is detected after the completion of the speed
negotiation. The HARD_RESET primitive detected at any time later than the
identification sequence is invalid. The hard reset sequence corresponds to the
reset condition of pSCSI.
1-12
Figure 1.7 Reset-related terminology
C141-C009
Advertisement
Table of Contents
