RE: about nrf51 Gazell timeslot period

Sigurd — Wed, 11 Jan 2017 09:22:49 GMT

Yes, that is correct.

RE: about nrf51 Gazell timeslot period

OPQ — Wed, 11 Jan 2017 03:07:18 GMT

I test the VDD_PA pin.

RE: about nrf51 Gazell timeslot period

OPQ — Wed, 11 Jan 2017 01:16:43 GMT

Hi Siguard, Thanks. So,the some 600us transfer interval is the retransmision?

RE: about nrf51 Gazell timeslot period

Sigurd — Tue, 10 Jan 2017 14:44:25 GMT

Hi,

Gazell can only send a new payload every 2 timeslots. So the transfer interval will be 1200us, resulting in a maximum data rate of 213 kbps in each direction.

The reason for this is the way the Gazell device synchronizes with the host. The host will stay on each frequency for 2 timeslot periods. When the device gets an ACK from the host it know that it is synchronized to the host, but it doesn't know whether the host is on the first or second timeslot for that specific channel. The only way the device can be sure that it will stay synchronized with the host is to update the RF frequency and add a new payload on every other timeslot, at the same rate that the host is changing frequency.