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FX3 without extern CLKIN32 ?? | Cypress Semiconductor

FX3 without extern CLKIN32 ??

Summary: 2 Replies, Latest post by bluebird2011 on 26 Aug 2011 05:14 PM PDT
Verified Answers: 1
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bluebird2011's picture
6 posts

 My FX3 only enumerate on USB Bus with external 32Khz Clock. Without Clock.. Nothing happens !?

PS: I build my own Testboard and all Pins are connected.



aasi's picture
Cypress Employee
1166 posts


Which version of the SDK are you using? The Beta2 firmwares should work irrespective of the watchdog timer.

Please check on this.



bluebird2011's picture
6 posts

Hi and thanks for answer  !

I have checked my PCB and all is fine. So I think, without CLKIN32, there is no way to enumerate on USB 2.0 Bus.
BEFORE i uploaded a RAM File to FX3 and first connect to Bus !  After this, i can configure it, but the first time ?
(I don't want to use a external 32Khz Clock ! )

With Clk32 all Applications works fine.

Best Regards


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