Interfacing Ethernet Module

[vru]

Hi All,

I am using Atmega128RFA1 and its evaluation kit STK 600 and trying to interface it to wiz811MJ ethernet network module which include w5100 ethernet controller.

I have to configure Atmega as master and the ethernet controller module as slave using SPI interface .

My doubts:
How to I power Up the ethernet module ?? is 3.6 v battery fine?? or i need to connect an external volatage regulator of 3.3 v ??

Anything else i need to check ?? or external components ??

after this is done I wil program intiialize the w5100 chip and its registers.

 

[nikhilele]

How to I power Up the ethernet module ?? is 3.6 v battery fine?? or i need to connect an external volatage regulator of 3.3 v ??

better use one diode to drop 0.3V and u get 3.3V