SX1232
WIRELESS & SENSING
DATASHEET
4.5.3. Timers
Two timers (Timer1 and Timer2) are also available in order to define periodic sequences. These timers are used to
generate interrupts, which can trigger transitions of the Sequencer.
T1 interrupt is generated (Timer1Resolution * Timer1Coefficient) after T2 interrupt or SequencerStart. command.
T2 interrupt is generated (Timer2Resolution * Timer2Coefficient) after T1 interrupt.
The timers’ mechanism is summarized on the following diagram.
Sequencer Start
T2
interrupt
Timer2
Timer1
T1
interrupt
Figure 21. Timer1 and Timer2 Mechanism
Note The timer sequence is completed independently of the actual Sequencer state. Thus, both timers need to be on to
achieve a periodic cycling.
Table 25 Sequencer Timer Settings
Variable
Timer1Resolution
Description
Resolution of Timer1
00: disabled
01: 64 us
10: 4.1 ms
11: 262 ms
Timer2Resolution
Resolution of Timer2
00: disabled
01: 64 us
10: 4.1 ms
11: 262 ms
Timer1Coefficient
Timer2Coefficient
Multiplying coefficient for Timer1
Multiplying coefficient for Timer2
Rev 3 - August 2012
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