No
. 96-1886-01E
Rev
.
1.1
GTECH Aircon Radio (Model GWT154)
PAGE
18
OF
72
transmits the ACK back to the Coordinator’s Host CPU.
Figure 9 - Typical Data Flow
3.9.1
Break
Processing
Legacy GTECH Peripherals recognize a UART Break condition on the GTECH485 bus as a hardware
reset. The Coordinator radio hardware does not include dedicated UART Break detect hardware, but
the Coordinator radio firmware will monitor the GTECH485 bus for a UART Break condition. In
addition, the Host CPU may issue a Break command packet to the Coordinator. In either event, the
Coordinator will broadcast a Break command packet to all the currently Associated End Devices in its
PAN. The End Device radios will software self-reset which, by virtue of the radio’s power-on
initialization sequence, will assert a Break on its wired 485 bus.
