Brian Kennedy

Baud Rate and the MC9S080G8 uCtrl

Discussion created by Brian Kennedy on Jun 6, 2006
Latest reply on Jun 8, 2006 by David Payne
Im using the internal 16MHZ osc with the default ICS settings. 
My question is: "What speed does the BUSS run @ when using the Default 16Mhz clock?"
 
When looking thru the datasheet of the subject controller it shows three different things:
a) The internal frequency settings is nominally 16Mhz and will provide a 4Mhz BUSS out of a RESET.  (section 2.2.2, Oscilator section of datasheet)
 
b) The BUSS frequency will be 1/2 of the ICSOUT frequency (section 10.1, of datasheet)
 
c) The diagram shown in Figure 10.2 shows the ICSOUT signal being fed ny a 2^n divider, not a divide by two.
 
Can anyone help clear up my discrepencies,
 
Thanks
Brian

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