Messages in this thread | | | Date | Tue, 15 Feb 2005 07:19:01 -0500 (EST) | From | linux-os <> | Subject | Re: What is the purpose of GPIO pins. |
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On Tue, 15 Feb 2005, krishna wrote:
> Hi all, > > Can any one tell me the purpose GPIO pin serves. > How are GPIO pins better than dedicated pins, considering hardware design > view and for programming view. >
Do you mean General Purpose I/O bits on a chip? ^ ^ ^ ^ If so, it is intended to live in the lower 16 megabytes of an ix86 machine (higher addresses are not decoded), and at one time, went to the ISA bus, but is now usually a simple asynchronous bus off from some bridge.
From a hardware perspective, it's slow. From a programming perspective, you don't care where it is.
> Regards, > Krishna Chaitanya
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