SX1232
WIRELESS & SENSING
DATASHEET
Unwanted Signal
Wrong
Word
Preamble ( Preamble + Sync = T2 )
Payload
Crc
Idle
Receive
Timer2
Idle
Receive
Idle
Timer2
Timer1
RxTimeout
Timer1
Timer1
RxTimeout
Preamble
Detect
Figure 48. Listen Mode with Preamble Received and no SyncAddress
But if a valid Sync Word is detected, a SyncAddress interrupt is fired, the Sequencer is switched off and the circuit stays in
Receive mode as long as the user doesn't switch modes.
Wanted Signal
Sync
Word
Preamble ( Preamble + Sync = T2 )
Payload
Crc
Idle
Receive
Timer2
Timer1
RxTimeout
Preamble
Detect
Sync
Address
Fifo
Level
Figure 49. Listen Mode with Preamble Received & Valid SyncAddress
7.4.2.2. Sequencer Configuration
The following graph shows Listen mode - Wake on SyncAddress state machine:
Rev 3 - August 2012
Page 88
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