Re: PoR and AHB Configuration in WINCE

Software can't control POR hardware since it's not running when the POR
occurs! It is possible that software can have acces to the POR hardware
after the processor starts to execute instructions so it can read power
status and or manualy cuase a reset, etc...

Generally speaking, AHB is internal to the ARM core processor and not
something the software needs to deal with. Some processors do allow a level
of manipulation of things, mostly to enable or disable individual devices
and occasionally to set the processor permission level required to access
the device. You will need to read the documentation for the specific
processor you are using for more details.

--
Steve Maillet
EmbeddedFusion
smaillet@xxxxxxxxxxxxxxxxxx
<Gajanan.Agre@xxxxxxxxx> wrote in message
news:1179726312.693579.150270@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Hi all,

I need detail information on Por(Power on reset) and AHB
Configuration.As far my information The power-on reset (PoR) is an
electronic device incorporated into the integrated circuit that
detects the power applied to the chip and generates a reset impulse
that goes to the entire circuit placing it into a known state.
An AHB is a Advanced High-Performance Bus, System bus connecting ARM
cores to peripheral circuits , I/Os , memory and IPs.

All this is H/w related.Is there any software part or drivers attached
to POR or AHB?Do we need to wite any code for proper functiong of POR
and AHB?

Regards,
Gajanan



.

Relevant Pages

  • PoR and AHB Configuration in WINCE
    ... I need detail information on Por(Power on reset) and AHB ... that goes to the entire circuit placing it into a known state. ... An AHB is a Advanced High-Performance Bus, ... to POR or AHB?Do we need to wite any code for proper functiong of POR ...
    (microsoft.public.windowsce.platbuilder)
  • Re: Initializing a Flip-Flop on Power-up
    ... It's pathetic what young engineers consider a POR these days. ... Got enough honey-do projects so I am not going to fix their design. ... If there is a regulator I take it off before that and after, then issue the reset before it is too close to dropout. ... But a hysteresis is a good thing though I have to confess that I sometimes forego it, but only if there is enough margin between threshold and the circuit actually conking out. ...
    (sci.electronics.design)
  • Re: MPC5200 coming out of reset - does it actually work?
    ... not make it out of reset, the highest 3 address lines may be non-0 ... I made the POR longer; ... The PCI clock comes up at 33 MHz regardless of whether the CPU will ... as well as the suggested pulldowns on ...
    (comp.sys.powerpc.tech)
  • Re: 82C55A
    ... >>> You don't need a part that resets to zero. ... >>> part has to reset to zero. ... >> The o/p polarity at POR is not the whole problem Fred. ... >> Mode change then slapped all outputs to a logic 0. ...
    (sci.electronics.design)
  • Re: 82C55A
    ... >> You don't need a part that resets to zero. ... >> part has to reset to zero. ... > The o/p polarity at POR is not the whole problem Fred. ... > Mode change then slapped all outputs to a logic 0. ...
    (sci.electronics.design)
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