[En-Nut-Discussion] starting with RTL8019AS

[James Mclellan]

Darek,

When developing with the RTL8019AS, have you had any problems with the NIC?

I'm trying to create a system with an RTL8019AS, and have a problem of
the Link LED not illuminating when the cable plugs in. I can receive
data when packets are sent less than 50 milliseconds apart.

The same software works fine when plugged into a dev kit board. It's
only when we plug it into the our prototypes that the problem occurs.
That being said, I've checked most of the connections by hand for
continuity and voltage.

Have you ever had a similar problem? Any suggestions? Are there chip
clips or other tools available to diagnose the RTL8019AS individually?

Thanks!

On 4/28/06, Harald Kipp <harald.kipp at egnite.de> wrote:
> Darek,
>
> At 01:13 28.04.2006 +0200, you wrote:
> >Hi,
> >
> >I'd like to ask if anybody has experience with connecting RTL8019AS to
> >ATMEGA 128 without memory mapping (external sdram)? I don't know if it is
> >possible?
>
> I'd suggest to have a look to app/basemon. It contains
> all required routines for accessing the RTL8019AS without
> using more complicated Nut/OS functions. Try to read the
> chip ID first. If that works, it shouldn't be too difficult
> to modify the Nut/OS driver for your specific hardware.
>
> But keep in mind: Ethernet may transmit up to 1500 bytes
> in one packet. The ATmega internal RAM will soon reach its
> limits.
>
> Harald
>
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