Hi all
I want to confirm about the meaning of the word "Pull up" in Table 30-1 at following document.
http://cache.freescale.com/files/32bit/doc/ref_manual/iMX53RM.pdf?
In the Table 30-1, there is a column that named "Pull up".
What is this mean ?
Does the user should be pull up for each signals ?
However, in the schematics of SABRE Platform for Tablets Reference Design based on i.MX53, the SD1_DATA0, SD1_DATA1 and SD1_DATA2 signals are not pull-uped.
Because of those difference, I'm confusing.
So please let me know the meaning of the column.
Ko-hey
Solved! Go to Solution.
Hi ko-hey
yes pull-ups are needed, SD1_DATA have internal pull-ups,
if necessary external pull-ups may be added for improving signal integrity.
Best regards
igor
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Hi ko-hey
yes pull-ups are needed, SD1_DATA have internal pull-ups,
if necessary external pull-ups may be added for improving signal integrity.
Best regards
igor
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Igor
Thanks!
Ko-hey