# \#gcdrc

**URL:** https://forums.digi.com/tag/gcdrc/2491.md

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## [How to permanently set the clock speed or GCDR so that 6700 boots at 12MHz?](https://forums.digi.com/t/how-to-permanently-set-the-clock-speed-or-gcdr-so-that-6700-boots-at-12mhz/15817)

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**Author:** [@rjsdotorg](https://forums.digi.com/u/rjsdotorg)\
**Replies:** 1\
**Last updated:** [November 23, 2015, 10:36am UTC](https://forums.digi.com/t/how-to-permanently-set-the-clock-speed-or-gcdr-so-that-6700-boots-at-12mhz/15817 "2015-11-23T10:36:35Z")

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I would really like to know where we (users) can permanently set the main clock multiplier GCDR so that it boots and runs at 12MHz. I see the register settings in the doc, but that implies an already running Rabbit - th…