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Re: AD9915 Sync_out generation

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Hi,

Thanks for this inquiry. You are indeed right. There seems to be a conflict with the information in the datasheet.

 

To clear things, kindly refer to the truth table provided below for the correct bit assignment and corresponding SYNC_OUT pin output:

 

Sync_out enable bit

CFR2[9]

Sync out/in mux enable bit

CFR2[8]

SYNC_OUT pin output

WITH SYNC_IN input

WITHOUT SYNC_IN input

0

0

Output is taken from signal at SYNC_IN pin

                     3.3V DC

0

1

Output is taken from signal at SYNC_IN pin

                     3.3V DC

1

0

No output

No output

1

1

Output is taken from SYNC_OUT generator

SYNC_OUT = SYSCLK/384

Output is taken from SYNC_OUT generator

SYNC_OUT = SYSCLK/384


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