[En-Nut-Discussion] Ethernut2 w/realtek

Matt Bell mtbell at micropede.com
Sun Jul 18 21:38:35 CEST 2004


Hi,

I built my own ethernut2 board with a realtek ethernet controller
(EDTP's Packet Whacker) instead of the smcs controller. The following
pin mappings shown below is how i wired the controller to the ethernut2
board.


Ethernut2 board			Realtek controller
-------------------------------------------------------
latched address bus A[0-4]	-> A[0-4]
data bus D[0-7]			-> D[0-7]
RESET				-> ~RESET
NIC_EN | WR			-> IOWB
NIC_EN | RD			-> IORB
VDD				-> JD
VDD				-> VDD
GND				-> GND
ATMELM128 INT5/PE5		-> INT0

Changed NIC_BASE to 0xC000

Since im only wiring address lines A[0-4] to the address bus and ORing
WR and RD with NIC_EN as the chip select, does anyone see any potential
reasons why a configuration like this might not work? 

-Matt








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