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AD9643 User test mode control

Question asked by nikhil on Feb 28, 2013
Latest reply on Feb 28, 2013 by J.Harris

Hi,

 

In AD9643  datasheet the Test mode register 0x0D bits 7 and 6 are defined as Bit 7 = User test mode control 0 = continuous/ repeat pattern 1 = single pattern, then 0s and Bit 6 =Open.

  1. But in the Application note AN877 page 11 it is given that Bits 7 and 6 are used for sequencing the user pattern. So is the same true for this AD9643 also?
  2. In AD9643 there are 4 user test patterns so how the remaining two are selected.
  3. Is it something like two of the user test patterns are for I channel output and the remaining two are for Q channel ?

 

Regards,

Nikhil

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