[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-arm
Subject:    Re: Question on Versatile AHB M1 bus
From:       "Jason Chang" <jchang () inchipcomm ! com>
Date:       2005-11-21 19:51:27
Message-ID: 02aa01c5eed4$f6c1f170$1200a8c0 () poweredgesc420
[Download RAW message or body]

Hi Catalin;

I'm sorry to catch your meaning by "transparent".
Based on the AMBA doc., shouldn't one program the BURST and SIZE and etc...
to use the AHB bus ?. For my case, I'd like to burst read 8, 16 bits
registers, how can
I do it from ARM926EJ-S's AHB DATA bus ? Or I have to read 16 bits register
with LDR one at a time ?

Thanks

Jason Chang
----- Original Message ----- 
From: "Catalin Marinas" <catalin.marinas@arm.com>
To: "Jason Chang" <jchang@inchipcomm.com>
Cc: <linux-arm@lists.arm.linux.org.uk>
Sent: Monday, November 21, 2005 6:20 AM
Subject: Re: Question on Versatile AHB M1 bus


> "Jason Chang" <jchang@inchipcomm.com> wrote:
> > I understand that ARM926EJ-S has AHB DATA bus with limited AHB
> > capabilities, which I intend to use for read/write access of these
> > registers. But, I couldn't find the document describe the programing
> > the AHB bus interface of ARM926EJ-S core.
>
> AFAIK, accessing your peripheral via the AHB bus should be transparent
> to the software. I'm not aware of any way of programming the AHB
> bus. There is a document, http://www.arm.com/pdfs/AppNote119.zip, but
> it is only for hardware design.
>
> -- 
> Catalin
>
>


-------------------------------------------------------------------
List admin: http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm
FAQ:        http://www.arm.linux.org.uk/mailinglists/faq.php
Etiquette:  http://www.arm.linux.org.uk/mailinglists/etiquette.php
[prev in list] [next in list] [prev in thread] [next in thread]