RE: Some clarity on Gazell packet rates needed

Pete W — Mon, 16 Sep 2019 16:45:49 GMT

Thanks for the reply Kenneth. I missed the bit in the user guide where it says that the timeslot counter resets to 0 when the Ack is received, and an attempt to send the next new packet is only made when the counter rolls back to 0, which makes sense.

Regards

Pete

RE: Some clarity on Gazell packet rates needed

Kenneth — Mon, 16 Sep 2019 16:09:34 GMT

Hi,

There is drift between device and host and there is no time information in any of the packets. So the device simply synchronize to the last successful transmit acknowledgement. This successful exchange may have happened at any time with the 600us * 2 "window" (2 is required to ensure that independent of packets size in either direction 1 complete transmit + ack is guaranteed to get through on the channel, even due to drift in clocks between the two peers). So it is not designed to do more than 1 packet in each 1.2ms window in best case.

Best regards,
Kenneth