# pullup resistors on BE0-BE3

**URL:** <https://forums.digi.com/t/pullup-resistors-on-be0-be3/4678>\
**Category:** NET+OS\
**Created:** [June 16, 2004, 11:15pm UTC](https://forums.digi.com/t/pullup-resistors-on-be0-be3/4678 "2004-06-16T23:15:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![paulbeaty](https://avatars.discourse-cdn.com/v4/letter/p/e36b37/32.png) [@paulbeaty](https://forums.digi.com/u/paulbeaty)\
**Post date:** [June 16, 2004, 11:15pm UTC](https://forums.digi.com/t/pullup-resistors-on-be0-be3/4678/1 "2004-06-16T23:15:06Z")

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One of the application schematics for the NET+50 has 2.4k pullup resistors on the 4 signals BE0-BE3. Does anyone know why these resistors were used? Are they needed on the NS7520? And finally, is the value of these resistors important? Thanks in advance.

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**Author:** ![waster](https://avatars.discourse-cdn.com/v4/letter/w/90db22/32.png) [@waster](https://forums.digi.com/u/waster)\
**Post date:** [June 19, 2004, 12:36pm UTC](https://forums.digi.com/t/pullup-resistors-on-be0-be3/4678/2 "2004-06-19T12:36:50Z")

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As far as I can see (checked the errata 90000283F and minimal HW config) for the NET+50 and far as I can see these pull-ups are not specifically required on that device… so probably are not on the NS7520 either… I suspect that designer was worried about them being in a known state at reset… The design didn’t use the signals for bus buffering control did it? Regards Dave