• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 114 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.

TM4C1294NCPDT: QSSI advanced mode

can altineller
Expert 1630 points
Part Number: TM4C1294NCPDT

Tool/software:

Hello,

In the datasheet of TM4C1294NCPDT, Section 17, Page 1227:

There is a mention of SSInXDAT2 and SSInXDAT3 lines, for the advanced mode of SSI controller.

I would like review the possibility of connecting as many as possible SPI sensors, acceletometers to be exact, each connected to its own SPI bus as possible using the TM4C1294, for reading at the same time.

Can I take advantage of these extra lines, to read / write to 2 sensors using one spi bus, using the advanced mode. The two sensors can have the same chipselect and clk, but different data lines?

Secondly, is there any example code or usage illustration for these advanced modes.

Best Regards,

C.

  • +1
    TI__Guru**** 180736 points
    can altineller said:
    Can I take advantage of these extra lines, to read / write to 2 sensors using one spi bus, using the advanced mode

    Hi Can,

      No, you cannot use the advance mode to read two or more sensor. The parallel SPI data lines are meant to increase throughput for SPI devices that supports this feature. For example, some serial flash memories support SPI bus with multiple data lines. You cannot use this feature to access different sensors at the same time.