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AHB frequency

vignesharm vignesharm
Note: This was originally posted on 6th January 2009 at http://forums.arm.com

Hi Friends,

   My doubt is : what is the maximum AHB clock frequency ?

Regards,
P.Vignesh Prabhu
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  • 0 Arm Employee Badge
    Note: This was originally posted on 6th January 2009 at http://forums.arm.com

    Are you using an existing chip? If so, the maximum frequency will be determined by the implementation. For example, I know that at least some of the LPC devices have an AHB bus which can clock at least as fast as the processor itself, so you don't need to divide the system clock for the bus. These devices clock at 60-70MHz. Others may be different.

    If you're trying to implement an AHB bus and don't have the relevant documentation, then I probably can't help you as I'm not that familiar with the workings of it. The AMBA specification doesn't seem to list approximate frequencies, though I must admit that I haven't looked very hard.
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  • 0 Arm Employee Badge
    Note: This was originally posted on 6th January 2009 at http://forums.arm.com

    Are you using an existing chip? If so, the maximum frequency will be determined by the implementation. For example, I know that at least some of the LPC devices have an AHB bus which can clock at least as fast as the processor itself, so you don't need to divide the system clock for the bus. These devices clock at 60-70MHz. Others may be different.

    If you're trying to implement an AHB bus and don't have the relevant documentation, then I probably can't help you as I'm not that familiar with the workings of it. The AMBA specification doesn't seem to list approximate frequencies, though I must admit that I haven't looked very hard.
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