the TRF7970A does not require the clock polarity change like the TRF7960, -61, -62A, and -63A devices. Most likely this is your issue.
Please see figure 5-17 here ==> http://www.ti.com/lit/gpn/trf7970a
the TRF7970A does not require the clock polarity change like the TRF7960, -61, -62A, and -63A devices. Most likely this is your issue.
Please see figure 5-17 here ==> http://www.ti.com/lit/gpn/trf7970a