Preliminary Technical Data
rate of the FOT Receive Data signal driven by the FOT is
typically very slow and further degradation of the edge rate
is not desirable.
• The transmit data trace connecting the ADSP-
BF539/ADSP-BF539F MTX output pin to the FOT Trans-
mit Data input pin should have a 27 Ohm series
termination resistor placed close to the ADSP-
BF539/ADSP-BF539F MTX pin.
• The receive data trace and the transmit data trace between
the ADSP-BF539/ADSP-BF539F and the FOT should not
be routed close to each other in parallel over long distances
to avoid crosstalk.
ADSP-BF539/ADSP-BF539F
Rev. PrF | Page 21 of 68 | September 2006