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Re: [microblaze-uclinux] SMSC 91c111 with microblaze over EMC
Hi Matthias, and the rest
When I interfaced a lan91c111-device recently I just created a very
simple VHDL-interface (instead of using the EMC) since I'm working on
our own custom board. The module consists of a FSM which is working
according to the timing spec on page 114 in the data sheet. Have you
made sure that the LCLK signal is pulled high during your asynchronous
transactions to the chip?
The reset-signal is active high. I'm not using that pin to reset the
chip though since there is no EEPROM on my board. I'm resetting the chip
through the driver instead.
So far, I've just been working with 16-bit transactions since I have a
dedicated Microblaze running the TCP/IP-stack at 67 MHz.
/Johan
-----------------------------------------------
Johan Bernspång, xjohbex@xxxxxxxx
Research engineer
Swedish Defence Research Agency - FOI
Division of Command & Control Systems
Department of Electronic Warfare Systems
www.foi.se
Please remove the x's in the email address if
replying to me personally.
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Matthias Heise wrote:
Hi George,
I'd like to use a direct (async) interface, if possible 32 bit (I heard
about problems with the 32bit mode)
Matthias
George Smith schrieb:
I'm using the 91C111 on several of my devices. Which interface mode are
you using? ISA (async) 16 or VESA (sync) 32 or the direct 32 mode?
gesmith
On Wed, 2006-01-04 at 04:39, Matthias Heise wrote:
Hi ,
I connected the smsc macphy chip over emc to my microblaze system and
can write out addresses and data on the correct lines (tested them
all with oszilloscope :-( ) . Then I try to write and read the
registers just as described in the smsc application note 9.6. But
obviously the data isn't taken in by the chip as I only read the same
values, no matter what I write. There is activity on the read and
write enables. A classic would be the reset line, can anyone confirm
that it is (most unusual) high-active ? I couldn't find any
information saying that it is low though. Anyway I'm stuck. Any
helpful ideas ?
Thank you,
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