• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 41 subscribers
  • Views 293 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

CC3235MODASF: CC3235 Disable 5GHz

Stuart Baker
Genius 10280 points
Part Number: CC3235MODASF
Other Parts Discussed in Thread: UNIFLASH

I'm working with a customer that is presently using the CC3220MODASF, but is considering a move to the CC3235MODASF in order to get the Soft Roaming feature. They have zero interest in 5GHz support, and are concerned about the added regulatory certification costs of testing for 5GHz.

The product is a handheld product, requiring SAR testing. They are testing for FCC, ISED, CE, and Australia/New Zealand regions. Though they are getting a quote from their test house for the extra 5GHz testing, the expectation is that it will add undesirable cost.

Given that the customer does not need 5GHz support, can 5GHz be permanently disabled at all times, including during calibration? We have noticed that there is a 5GHz disable option in the Uniflash serial programming interface. Does this disable all 5GHz output at all times, including during calibration?

Thanks,

Stuart

  • 0
    TI__Mastermind 34890 points

    Hi Stuart,

    Yes, using the 5GHz disable option in Uniflash will disable all 5GHz channels which will reduce scanning time and power consumption. 

    Do note that this does not permanently disable 5GHz functionality - you will still be able to use the sl_WlanSet() API to re-enable 5GHz if desired at runtime.

    BR,

    Seong

  • 0 in reply to Seong Kim
    TI__Genius 10280 points

    Seong,

    I understand that the NWP interface also provides an API for disable and enable of 5GHz. My concern is that the NWP User's Guide states that this setting only takes effect in Station mode. The product will operate in both Station and AP mode, and must not EVER transmit in 5GHz mode. Not in Station mode or AP mode and not during calibration. If it EVER transmits in 5GHz mode, then the device needs to be tested for the 5GHz frequency band.

    Can you assure the customer that as long as they keep the 5GHz setting disabled (Uniflash and/or NWP API), it will NEVER transmit in the 5GHz band?

    Thanks,

    Stuart

  • 0 in reply to Stuart Baker
    TI__Mastermind 34890 points

    HI Stuart,

    Let me double check and get back to you on this to be 100%.

    BR,

    Seong

  • 0 in reply to Stuart Baker
    TI__Mastermind 34890 points

    Hi Stuart,

    The device shouldn't use the 5GHz channels at all if the setting is disabled. 

    To be safe, the AP role settings should be configured to one of the 2.4GHz channels as well.

    BR,

    Seong