Fujitsu MBA3300RC Benutzerhandbuch

 

C141-C013 

71 

In addition to aborting a connection request, BREAK may also be used to break a 
connection, in cases where CLOSE is not available.  After transmitting BREAK, 
the originating phy shall ignore all incoming dwords except for BREAKs.  

After transmitting BREAK, the source phy shall initialize a Break Timeout timer 
to 1 ms and start the Break Timeout timer.   Table 1.29 lists the responses to a 
BREAK being transmitted after a connection has been established.  

Response 

Description 

BREAK 

This confirms that the connection has been broken. 

Break Timeout 
timer expires 

The originating phy shall assume the connection has been 
broken. The originating phy may perform a link reset 
sequence. 

 

In addition to a BREAK, a connection is considered broken due to loss of dword 
synchronization.  

The following shall be the responses by an SSP phy to a broken connection:  

a)  Received frames having no CRC error may be considered valid regardless of 

whether an ACK has been transmitted in response to the frame prior to the 
broken connection; 

b)  Transmitted frames for which an ACK has been received prior to a broken 

connection shall be considered successfully transmitted; and  

c)  Transmitted frames for which an ACK or NAK has not been received prior to 

a broken connection shall be considered not successfully transmitted.  

In spite of the fact that the physical link is set to 3.0 Gbps, the connection rate 
(indicated in an OPEN address frame) may be 1.5 Gbps.  As shown in Table 1.30, 
if the transfer rate of the physical link is higher than the connection rate, ALIGN 
or NOTIFY primitives must be inserted between dwords for each phy of the 
pathway.