- Mack User's Guide USB U2781A

Features and Functions 3
U2781A User’s Guide 31
Trigger Bus [0...7]
Trigger Bus [0...7] is an 8- bit digital bus connected from slot 1
to slot 6 to synchronize different USB modules. This trigger bus
enables the USB modules of passing trigger signals to one
another.
To have one of the modules to control the operation of the other
modules, set the particular module as MASTER and the rest as
SLAVE (refer to “Simultaneous Synchronization (SSI)” on page
39 for more details). The control signal is sent from the Master
module to the SLAVE modules through this trigger bus. See
Figure 3- 3 for the bus architecture.
Figure3-3 Block diagram of Trigger Bus[0...7] and Trigger Out
In addition, the trigger bus can also be used to carry out the
pre- configuration of the chassis and modules before any
triggering activities. Refer to “Identifying Modules Location” on
page 38 for more information,