PRODUCT OVERVIEW
Copyright 2017
2-10
FibreXtreme Hardware Reference
2.5.4 Single Master Ring
This is one of the most useful topologies for the SL240 card. This topology allows a single
transmitter to send data to a group of destinations with flow control from all of the
destinations. This flow control is a single flag to the master—it can send or it cannot send
data. This means that if one destination has a failure and stops removing data from its
receive FIFO, it should be switched out to avoid bringing down the loop. A switch suitable
for this purpose is the LinkXchange GLX4000 Physical Layer Switch, available from
Curtiss-Wright Controls, Inc. Software controls mastership switching of the ring. There are
rules associated with master switching listed in the “Programming Interface” section. The
flow control used in this case is similar to a multi-drop FPDP bus, where any receiver can
back the transmitter off.
This is the typical configuration for record-playback systems, where you have multiple
signal processors and data storage elements present on the network and there is only one
node (the data source or the recorder playing the data back) transmitting at a time.
RX
TX
RX
TX
RX
TX
RX
TX
SL240 Card
(Destination)
SL240 Card
(Destination)
SL240 Card
(Destination)
SL240 Card
(Master)
Figure 2-12 Single Master Ring
Summary of Contents for FHF5-PC4MWB04-00
Page 2: ......
Page 8: ...Copyright 2017 iv FibreXtreme Hardware Reference ...
Page 26: ......
Page 40: ......
Page 48: ...SPECIFICATIONS Copyright 2017 5 8 FibreXtreme Hardware Reference ...
Page 50: ......
Page 68: ......
Page 74: ......
Page 76: ......
Page 78: ......
Page 84: ......
Page 86: ......
Page 96: ......