Where is SWRA159

Jianyi Bao

Other Parts Discussed in Thread: CC110L

The linke "http://www.ti.com/lit/pdf/SWRA159" seems not avalible.

According to CC110L user's guide "SWRS109B", Chapter "5.15.1 Frequency Offset Compensation":

If the FOCCFG.FOC_BS_CS_GATE bit is set, the offset compensator will freeze until carrier sense
asserts. This may be useful when the radio is in RX for long periods with no traffic, since the algorithm
may drift to the boundaries when trying to track noise.

Does this mean that if Rx is turned on for long time but there is no other device transmitting during this period of time, is it possible that it will fail to receive any more?

I did find sometimes on my boards the receiver will fail to receive anymore when the Rx is turned on for long time (about 4 minutes). In this case, shall I set FOCCFG.FOC_BS_CS_GATE?

Thanks

over 9 years ago

0 TER over 9 years ago

TI__Guru**** 317180 points

DN015 could be found in this thread: http://e2e.ti.com/support/wireless_connectivity/f/155/t/207281.aspx

- The VCO may start to drift over time if you don't calibrate. Try to have the device in cont Tx and see if the center frequency change when sending a CW for a few minutes.

- Have you tested is you are able to receive something if you increase the Rx bandwidth? (test to account for drift)

- If your tests show that the frequeny drift is not the issue, try FOCCFG.FOC_BS_CS_GATE

0 Jianyi Bao over 9 years ago in reply to TER

Expert 2220 points

Thank you for your answers. I will try your suggestions when I have time.

Sub-1 GHz

Sub-1 GHz forum

Where is SWRA159