• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 102 subscribers
  • Views 737 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.

66AK2L06: What are the fastest sample rates supported by RFSDK for single antenna receiver application

DocT
Intellectual 270 points
Part Number: 66AK2L06
Other Parts Discussed in Thread: RFSDK, ADC12J4000

We have a wideband receiver application that we are currently running on a C6678 with an expensive FPGA doing DDC and tuning at 200 MSPS (I/Q).  We are considering using the 66AK2L06 with ADC12J4000  with a single antenna instead.   I can work with the supported rates of the RFSDK.  I am unclear of what the limitations of data throughput are when using the DFE in a single antenna receiver application.

Using the supported rate of 368.64 in bypass mode, does this mean I can get packet DMA of 368.64 MSPS  (16 bit I/Q) data direct to one of the C66x cores?  If using a single DDUC, what is the max rate? 

Thanks,

Dan

  • 0
    TI__Guru**** 161600 points
    Hi Dan,

    I've notified the RFSDK team.

    Best Regards,
    Yordan
  • 0
    TI__Mastermind 37500 points

    Hello,

    The fastest IQ single antenna, single channel IQ example for the RFSDK is Adjacent Market Design 2.

    This is either 245.76Msps real, or 122.88Msps complex as a single channel with bypass of other DFE functions.   

    Adjacent Market design 1 uses a complex receive architecture, and Adjacent market design 4 uses a complex receive architecture.

    The DFE bypass is limited to the IQN rates that can be supported at the baseband interface of DFE to the ingress/egress of IQN.

    Regards,

    Joe Quintal

  • 0 in reply to Radio-Joe
    Intellectual 270 points

    Thanks Joe.  If I use 2 DDCs, does that affect the output rate through the IQN or is there something else more limiting?  If I use two input antenna channels in DFE bypass, does that cut the rates in half?  This didn't seem clear to me when I read the SPRUHX8a document?  Is this the same for TCI6630K2L06? 

    Also, can I double my output rates if I setup the BBRx Formatter for 8 bit IQ format?

  • 0 in reply to DocT
    TI__Mastermind 37500 points
    The 2 stream to 2 Rx channel outputs, reduces the stream and baseband IQ to 92.16Msps.

    The 8bit IO does not increase the output rate, it is using the top 8bits of I and Q instead of the top 16 I and Q.

    Regards,
    Joe Quintal