Re: 80 MHz clock for uC5282 Coldfire Module

[Eric Norum <norume@aps.anl.gov>]

You would have to use the linker flags to define _CPUClockSpeed as  
80000000 when linking your application, but other than that I think  
that everything would be o.k.
Make sure that any devices you have hooked to the external bus still  
meet the TA* setup time -- the 64 MHz version of the MCF5282 requires  
Tsetup to be at least 10ns -- so external devices have only 5.625 ns  
from CLK till they have to have TA* asserted.  This was a real pain to  
deal with in my ColdFire/FPGA applications.

On May 5, 2008, at 6:53 PM, K.M Ha wrote:

> Hello,
>
> Recently the Arcturus company relesed new uC5282 model.
> The difference is coldfire CPU clock 80 MHz(previous model clock is  
> 64 MHz).
>
> Model : uC5282-16E16C80-XR
>
> Somebody use this model for embedded m68k-RTEMS IOC applications ?
> If i choson this model, all of BSP is compatible in recent m68k- 
> RTEMS BSP ?
>
>
> Thanks.
> Kiman Ha,
> Pohang Light Source

--
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
Argonne National Laboratory
(630) 252-4793