On Friday 01 June 2012 21:21:19 Adam Okon wrote:
> 
> ------ Wiadomość oryginalna ------
> Temat: Re: [Emc-developers] RTnet HAL with ENC624J600

Apropos ENC624J600:

See page 148 of data sheet for max spi clock: 14Mhz.

I have measured response time of ENC28J60
from avr-net-io board with a spi clk of 4Mhz: 0,77ms
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?AVR-Net-IO

From this I expect 0.22ms for the  ENC624J600. 
-> max 4kHz

Faster may be the PSP port of ENC624J600.
See page 53.

My suggestion is to use a fpga and udp:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?FPGA
4. Non-realtime communication via ethernet
10Mbit design: udp_tx_rx_vhdl.tar.gz

Joachim 


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