HGST Ultrastar 7K4000 (SAS) Hard Disk Drive Specification
55
• Requested Inside ZPSDS: set to 0b since this is an "End Device"
• Inside ZPSDS Persistent: set to 0b since this is an "End Device"
Table 30: Reason field
17.6.1.2 OPEN Address Frame
The OPEN address frame format is used for the identification sequence. The OPEN address frame is sent after the phy reset
sequence completes. The OPEN Address Frame format is defined as follows:
• Initiator Port: This bit is set to zero when the Drive is the source port acting as a SAS target.
• Protocol: this field is set to 001b to indicate SSP Protocol.
• Features: this field is set to zero and ignored by the Drive per SAS 1.1.
• Connection Rate: field should be set to 8h (1.5Gbps) or 9h (3Gbps), depending on requested link rate. Rate matching is
supported by the Drive, therefore if the Link to the drive is 3.0Gbps, and the Connection Rate is 1.5Gbps, the Drive will
insert ALIGNs between DWords, to match the Connection Rate.
• Initiator Connection Tag: The Drive will set this value to the last value received from this Initiator.
• Destination SAS Address: field contains the port identifier of the SAS port to which a connection is being requested.
• Source SAS Address: field contains the port identifier on the port that originated this frame (i.e. the drive’s port address).
• Source Zone Group: This field is set to zero and ignored by the Drive per SAS 2.
Value Address Frame Type Description
00b Power on
01b OPEN: Connection Request
02b Hard Reset (received a Hard Reset during hard reset sequence)
04b Loss of dword synchronization
07b Break timeout timer expired
08b Phy test function stopped
Others RESERVED
Byte Bit
76543210
0 Initiator
P o r t = 0
Protocol = 1 Address Frame Type = 1
1 Features = 0 Connection Rate = 8h or 9h or Ah
2-3 Initiator Connection Tag
4-11 Destination SAS Address
12-19 Source SAS Address
20 Source Zone Group
21 Pathway Blocked Count
22-23 Arbitration Wait Time
24-27 More Compatible Features
28-31 CRC
To Next Page
Loading...
Need help?
General
