DDC264 Cascading multiple converters

Ron Ying

Other Parts Discussed in Thread: DDC264

Hello Bob or someone else,

I have a question regarding the daisy-chained connection of DDC264, regarding Figure 28 and Figure 29 in the DDC264 spec (SBAS368C –MAY 2006–REVISED JULY 2011) in page 17. In Figure 29, there is a DVALID signal, and in Figure 28, there are four DVALID pins from four connected converters; which DVALID pin (out of four) of Figure 28 does the DVALID signal in Figure 29 refer to?

How do I use these four DVALID pins correctly in the daisy-chain connection?

Thank you,

Ron

over 14 years ago

Chen Kung over 14 years ago

TI__Genius 12025 points

1374.DDC264 Quad Board Schematic.pdf

Hello Ron,

Please look at the attached file with the boad schematic.

On the page #3, it shows only DVALID pin of the left DDC264 is connected to Xilinx Spartan

(called DAVLIDn1).

Other DVALID pins of other DDC264s are floating.

Thank you,

From Chen

Ron Ying over 14 years ago in reply to Chen Kung

Intellectual 285 points

Hello Chen,

Thank you for the reply.

Best regards,

Ron

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DDC264 Cascading multiple converters