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rkris
rkris
Visitor II
October 17, 2018
Question

SPIRIT1 CSMA

  • October 17, 2018
  • 1 reply
  • 598 views

According to the description of CCA_PERIOD[ ] on page 41 of the ref manual (DocID 022758 Rev 10) , Tcca is the time between two successive CS samplings but the CSMA flow chart on page 40 indicates that CS sampling is done continuously for Tcca duration. I guess the flow chart is wrong. We urgently need to get SPSGRF-868 working for a European customer. Also please confirm that the Tbit is (1 / 34.7 kHz) = 28.818 micro-secs.

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1 reply

Roman Jasmann
Roman Jasmann
Associate II
October 31, 2018

Hi,

I've noticed this issue in the data sheet too. I'm pretty sure that the carrier sense sampling is performed contiously during the clear channel assessment period T_CCA. Moreover, T_bit depends on your data rate.

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