AnsweredAssumed Answered

CW1 change in AD9959

Question asked by kotoo@fujiele.co.jp on Mar 7, 2016
Latest reply on Mar 17, 2016 by LouijieC

Please teach me AD9959.

 

To change the settings in the state in which to operate the DDS in Phase Sweep mode.
Fixed a profile pin to L of state (CPOW0 selection)

==setting A==

CFR of 0xc04321
CPOW0 of 0x1FFF of (≒ 180 °)
ACR unset
LSRR0x0101
Of RDW 0x000029f1
Of FDW 0x000029f1
CFTW00x08ADAB9F
CW10xFFFC0000 (≒ 360 °)


==setting B==

CFR of 0xc04321
CPOW0 of 0x1FFF of (≒ 180 °)
ACR unset
LSRR0x0101
Of RDW 0x000029f1
Of FDW 0x000029f1
CFTW00x08ADAB9F
CW1 of 0x00000000 of (≒ 0 °)

When setting change from A to B, the profile pin despite L fixed,
Output from the 180 ° from the DDS, they will be changed to 0 ° is the phase setting of the output of CW1 side.

Q1.
I do not know the above-mentioned phenomenon reason.
Do you have limittation for setting the 'CW1 and CPOW1'?

Q2.
Please advice operation method in the case of shifting the position of CW1 in 0 ° from 360 °.

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