• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 54 subscribers
  • Views 551 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Channel Switching time on CC1101

Jeff Yu
Expert 2110 points

i am switching on 5 channel (changing CHANNR <2M) on the 868-869MHz, i find that my RX/TX need around 10ms to stabilize after  switching the channel which in data sheet is stated about 75ns....

and i don't  apply SCAL after each switching as(<2M)...

but i retained AUTOCAL after each idle to TX/RX

is it normal ?

however, 10ms time is too costly for my application

  • 0
    Expert 2110 points

    Hi all,

    i have checked the datasheet P.54 & Section 28.2 of Frequency Hopping and Multi-Channel Systems

    for the solution one , 1) Frequency hopping with calibration for each
    hop. The PLL calibration time is 712/724 μs
    (26 MHz crystal and TEST0 = 0x09/0B, see
    Table 35). The blanking interval between each
    frequency hop is then 787/799 μs.

    Frequency hopping with calibration for each
    hop.  that mean i need to apply strobe(SCAL) for new frequency ?

    Thanks

  • 0 in reply to Jeff Yu
    TI__Mastermind 27145 points

    Hi Jeff,

     

    It seems it is better to use STX and SRX commands. Please see pages 28 and 67.

    Thanks,

    PM

  • 0 in reply to PM
    Expert 2110 points

    Sorry i dont understand,,,

    are you mean that after switching new channel, i need to strobe(SRX or STX) ?

    how about SCAL ?

    thanks