RFM68CW Datasheet, PDF (16/20 Pages) List of Unclassifed Manufacturers – Low Cost ISM Transmitter Module

RFM68CW
RFM68CW
5.6. Recovery Command
In the event of spurious activity (less than 24 clock cycles received) on the CTRL pin, control over the TWI interface can be
recovered in two possible ways:
t2
Recovery Command
DATA
CTRL
1st rising
edge on CTRL
24th rising
edge on CTRL
Figure 9. Quick Recovery Command
DATA
t1
t0
CTRL
1st rising edge
24th rising edge
Figure 10. Pulsed Recovery Command
Notes - If t2 < 5 us, the RFM68CW will not turn into Tx mode during the recovery command (if not previously in Tx mode)
- If t1 < 5 us, with t0 > 5 us, the RFM68CW will not turn into Tx mode in the second scenario of recovery command
- During the Pulsed recovery command, t0 timing does not have any upper limit
- If t1 or t2 exceeds 5us, the recovery command will still be successful, but the transmitter will momentarily turn on
16
Tel: [phone] Fax: [phone] E-mail: [e-mail] http:/ / www.hoperf.com