Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
71
Table 36 Reason Field
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
17.5.1.2
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:
Table 37 Open Address Frame Format
Byte
Bit
7
6
5
4
3
2
1
0
0
Initiator Port=0 Protocol = 1 Address Frame Type = 1
1
Features = 0 Connection Rate = 8h, 9h, Ah, or Bh
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
 Initiator Port is set to zero when the drive is the source port acting as a SAS target
 Protocol is set to 001b to indicate SSP Protocol
 Features is set to zero and ignored by the drive per SPL-3
 Connection Rate is set to 8h (1.5Gbps), 9h (3Gbps), Ah (6Gbs), or Bh (12Gbs), 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.