Fujitsu MBA3147RC Arbitration Wait Time field, ∙ Connection Rate, ∙ Initiator Connection TAG

SAS Interface

The COMPATIBLE FEATURES field is set to zero. The destination device ignores the COMPATIBLE FEATURES field.

The PATHWAY BLOCKED COUNT field specifies the number of times the port has retried this connection request due to receiving OPEN_REJECT (PATHWAY BLOCKED). The port shall not increment the PATHWAY BLOCKED COUNT value past FFh. If the port changes connection requests, it shall use a PATHWAY BLOCKED COUNT of 00h.

The ARBITRATION WAIT TIME field specifies how long the port transmitting the OPEN address frame has been waiting for a connection request to be accepted or rejected. This time is maintained by the port layer in an Arbitration Wait Time timer. For values from 0000h to 7FFFh, the Arbitration Wait Time timer increments in one microsecond steps. For values from 8000h to FFFFh, the Arbitration Wait Time timer increments in one millisecond steps. The maximum value represents 32767 ms + 32768 μs. Table 1.24 describes several values of the ARBITRATION WAIT TIME field.

Table 1.24 ARBITRATION WAIT TIME field

Code	Description
0000h	0 μs
0001h	1 μs
...	...
7FFFh	32 767 μs
8000h	0 ms + 32 768 μs
8001h	1 ms + 32 768 μs
...	...
FFFFh	32 767 ms + 32 768 μs

The MORE COMPATIBLE FEATURES field shall be set to zero. The destination device shall ignore the MORE COMPATIBLE FEATURES field.

The contents of an OPEN address frame sent by a drive are as follows:

∙INITIATOR PORT bit: 0b

∙ PROTOCOL:001b

∙CONNECTION RATE:

The CONNECTION RATE value when an initiator makes a connection request

∙INITIATOR CONNECTION TAG:

The INITIATOR CONNECTION TAG value when an initiator makes a connection request

64 C141-C013