Fujitsu MBA3147RC Manuel D’Utilisation

 

C141-C013 

47 

Table 1.12 summarizes the types of primitive sequences. 

Primitive 

sequence type 

Number of times the transmitter 

transmits the primitive to transmit 

the primitive sequence 

Number of times the receiver 

receives the primitive to detect the 

primitive sequence 

Single 

1 

1 

Triple 

3 

3 

Redundant 

6 

3 

Any number of ALIGNs and NOTIFYs may be sent inside primitive sequences 
without affecting the count or breaking the consecutiveness requirements. Rate 
matching ALIGNs and NOTIFYs shall be sent inside primitive sequences inside 
of connections if rate matching is enabled. 

AIP is sent by an expander device after a connection request to specify that the 
connection request is being processed and specify the status of the connection 
request. 

A drive performs the following processing when an AIP primitive is received: 

1)  When the drive receives an AIP primitive after sending the OPEN frame, the 

drive initializes the open timer held in the drive, and restarts it. 

2)  When the drive receives an AIP primitive before sending the OPEN frame, 

the received AIP primitive is discarded. 

3)  In a case of OPEN cross (a case where both the drive and initiator send the 

OPEN frame), when the drive receives an AIP primitive after sending the 
OPEN frame and, then, receives the OPEN frame from the expander, the 
drive does not perform the arbitration fairness procedure.  Instead, the 
attempt from the drive is treated as unsuccessful, and the drive sends the 
OPEN_ACCEPT or an OPEN_REJECT primitive. 

ALIGNs are used for: 

a)  OOB signals; 

b)  character and dword alignment during the speed negotiation sequence; 

c)  clock skew management after the phy reset sequence; 

d)  rate matching during connections; and