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4.0 Register/Command Reference
Values
S244 Channel Request Mode
0
Channel Request
1
TDMA Mode (Standard)
Channel Request Mode ‘on’ (default), allows a Remote modem which
has data to send to request from the Master permission to do so.
When granted, the Remote will be allowed to transmit all of its data (no
other Remotes may transmit during this period), upon completion of
which it will release the channel. This feature eliminates collisions
which would otherwise occur if a number of Remotes were all trying to
transmit at the same time.
TDMA mode is discussed in detail in previous sections. It relates to
Channel Requests in that, in TDMA mode, the Master does not allow
such requests from Remotes; the Master sequences through a list of
Remotes, giving each one in turn an opportunity to transmit.
Values
S248 Sync Timeout
1-65534
512
This register defines how many hop intervals where the slave does not
receive a synchronization packet from the master, before it will
become unsynchronized and begins to search for a master.
Values
S251 Master Hop Allocation Timeout
hops
1-254
10
In TDMA mode (see S244
)
this register determines how long, in hop
intervals, the Master will wait for a Remote to either (a) begin to send
data or (b) indicate that it has completed sending all of its data, prior to
the Master sequencing to the next Remote to be given permission to
transmit.
