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From: | Graham Davies |
Subject: | Re: [avr-chat] XMEGA clocking questions |
Date: | Thu, 14 Mar 2013 13:52:32 -0400 |
Erik Walthinsen wrote:
In theory you can use the 48MHz clock divided by 2 to drive the CPU at 24Mhz, but there's no way to get 32Mhz out of the USB SOF+DFLL ;-(Also, the 2Mhz DFLL can *only* be driven from internal or external 32.768KHz, which means you can't use the SOF to calibrate the CPU clock as driven by the 2MHz * PLL.
OK, this doesn't contradict anything I wrote and I don't think the OP wanted the CPU clock synchronized to SoF, so I'm not sure where you're taking us with this additional information.
Graham.
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