Re: [HRI-devel] JTAG & RTL-8181

[NOVAK, P. <pe...@do...>]

Hi Marcelo,

I was using this device in several projects, but without the JTAG connection,
only using the console. I think the EJTAG description is part of the MIPS
original documentation and it might be possible that the chip does not support
a regular boundary scan, but only the MIPS proprietary EJTAG functionality.
However, things like Flash programming can be achieved with EJTAG as well,
actually easier than with a boundary scan. Besides, as there is no reals MIPS
core in the RTL8181 but the Lexra MIPS clone, so the EJTAG the manuals might
not reflect the real implementation on the RTL8181.

However, the RTl8181 based devices are more and more rare and most
manufacturers (Edimax, JAHT, ...) have replaced the RTL8181 based designs with
Infineon / ADMTek ADM5120 based designs. For more information, please see
http://www.linux-mips.org/wiki/ADMtek . As this chip has a real MIPS core, the
EJTAG manual will be 100% reliable here.

On Mon, 25 Jul 2005 18:44:28 -0300, Marcelo Costa wrote
> Hi,
> 
> I am playing with jtag on an  Ovislink Air Live wireless access 
> point. everything if fine, but the BSDL file of the RTL8181. Does 
> anyone has it?
> 
> I will send all the informations about jtag and ovislink after I 
> make it work.
> 
> Regards,
> Marcelo Costa
> 
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Petr Novak
pe...@do...
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