ADF7021: 4FSK mode bug

Document created by analog-archivist Employee on Feb 23, 2016Last modified by analog-archivist Employee on Aug 10, 2016
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I am testing ADF7021 and I want to use the 4FSK modulation scheme in our
application. Some detail requirements are 3k deviation, 9.6k data rate and RF
frequency 869.5MHz.
We can generate the register data with the evaluation software and modify it
for the ADIismLINK Host as shown in the attachment. Now we have two EVBs of
ADF7021, one is the EP board, the other is the BS board. But it seems that they
can not communicate with each other. The SWD LED of the BS board is always on.
I don't know why and what we should pay attention to when using the 4FSK mode?


4FSK Modulation is not compatible with the ADIismLINK. It is not built into the
uC code.
Secondly there is a slight bug in that the SWD does not function in 4FSK.
This is shown in the attached anomaly sheet.
The ADF7021-N has the SWD bug in 4FSK mode fixed if this is of any help however
this will also not function with ADIismLINK.