[SI-LIST] Re: about XAUI error
- From: "Rotem Gazit" <rotemg@xxxxxxxxxxxx>
- To: <myan@xxxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Tue, 3 Aug 2004 00:02:20 +0300
Hi Myan,
XAUI is designed to work over a "compliance channel" that resembles 15"
FR4 backplane + 2 x Line connectors.
Your signal (15 mm !) is most probably over equalized and suffer from
huge reflections.
Look in the data sheet for the registers that change the transmitter
amplitude/pre-emphasis and receiver equalizer and try setting lower
values.
Good luck,=20
________________________________________
Rotem Gazit
Director of System & Product Engineering.
Mysticom Semiconductor Ltd.
Tel: +972 9 8636424
Fax: +972 9 8636466
1 Hazoran St, Netanya 42504, Israel.
www.mysticom.com
=20
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of myan@xxxxxxxxxxxxxx
Sent: Friday, July 30, 2004 5:08 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] about XAUI error=20
I use BCM8011 and BCM5690 . When BCM5690 is in phy remote lootback =3D
mode, I send 10G through 8011 to BCM5690 and get data from BCM5690 to =
=3D
8011 . When I send 1 million data packages ,I find 200 packages have =
=3D
frame crc error in received datas. XAUI track length is about 15mm on =
=3D
PCB.=3D20
Could anyone tell me some reasons and how to solve this problem ?
=3D20
Thanks=3D20
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=20
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