W5300 with external phy dosn't work

TCP/IP Chip W5300
1

Hi
I have W5300 with ATXmega32 MCU and I use External PHY (REALTEK)
Data transfering between Xmega and W5300 work well But when I plug in RJ45 cable ,system doesn’t recognize it and unplug cable message is show.and I can’t send or rcv any data!!
I change RJ45 jack but it doesn’t work.
I Really don’t know what the problem is!! Is it related on Rj45 or external phy??
Can u help me? If yes I will be very surprise!
Thanks

2

Hi,
Can you post your schematics? If no, You should compare yours from wiznet’s schematics.

WIZnet’s schematic can be downloaded from [url]http://www.wiznet.co.kr/UpLoad_Files/ReferenceFiles/W5300_ref_schematics(2010_2_12).zip[/url]

thanks.

3

Note that RJ45 refered to WIZnet’s schematics is MAC-JACK(RJ45 is integrated with Transformer).

4

thanks midnightcow
my shematic is as same as the shematic ,i maked it base on the above shematic.
but still it dosn’t work

5

Hi,
Are parts as same as wiznet?
Check the 25MHz clock feed in PHY, the power 3.3V and 1.8V(PWFBOUT net).
The PHY should be operated normally on power-up, regardless of W5300.
On powerup, PHY link led is on or blink when pluged cable but off when un-pluged cable.

If possible, you’d better post the schematic.