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Original question:

LM8335EVM: Compatible to control MIPI RFFE 2.1?

LM8335EVM: Re: LM8335EVM: Compatible to control MIPI RFFE 2.1?

Martin Maurer
Prodigy 20 points
Part Number: LM8335EVM
Other Parts Discussed in Thread: LM8335

Tool/software:

There was question

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1406525/lm8335evm-compatible-to-control-mipi-rffe-2-1

by https://e2e.ti.com/members/6695532

Answer by https://e2e.ti.com/members/6813244

As far as I know the LM8335EVM is an eval board which has a controller (MSP430) and target (LM8335) on board. Is this correct?

So answer "you can't use the LM8335 to control the Qorvo QM13344 RF switch" is in my opinion wrong.

Question is: Can the on board MSP430 (perhaps with newer firmware) talk to Qorvo QM13344 RF switch?

And can the MSP430 (perhaps with newer firmware) talk RFFE 2.1, even when LM8335 can only understand RFFE 1.10?

  • 0
    TI__Mastermind 48158 points

    Hi Martin,

    Martin Maurer said:
    As far as I know the LM8335EVM is an eval board which has a controller (MSP430) and target (LM8335) on board. Is this correct?

    This is correct. 

    Martin Maurer said:
    So answer "you can't use the LM8335 to control the Qorvo QM13344 RF switch" is in my opinion wrong.

    THe actual device LM8335 is a target device. It's an RFFE to IO expander. 

    The LM8335EVM w/ MSP430 could probably be used to talk to a Qorvo QM13344 RF switch, but I think the firmware for the MSP430 would need to be adjusted. I am not too familiar with this EVM GUI nor the RFFE protocol. I am sure MSP430 could be programmed to follow the RFFE protocol and read/write from/to the RF switch.  

    The LM8335 can support MIPI RFFE version 1.10. 

    As for version 2.1, we might need to use a different microcontroller / processor. Not sure of the differences between V1.1 and V2.1

    Here is the table of the list of microcontrollers and processors TI current sells. 

    Microcontrollers (MCUs) & processors | TI.com

    Please let me know if you have any more questions. 

    Regards,

    Tyler