Dear myan, 1. First check for any protection devices in the transmiting path... If its there try sending packets after removing that.. Once i received errors when i assembled some ESD protection devices .. 2. Also whether u hv put the right termination for the ethernet lines.. 3. Make sure that u hv a valid ethernet packet. Check for the size of packet. 4. Regarding the transformer u can chck with the datasheet.. hope this helps... Rgrds jozef ----- Original Message ----- From: <myan@xxxxxxxxxxxxxx> To: <si-list@xxxxxxxxxxxxx> Sent: Tuesday, November 23, 2004 7:06 PM Subject: [SI-LIST] gigabit port > > > I design a board . There are 6 Gigabit ports (1000base-T) on it. And = > there is no problem to send packets to smartbits . But when smartbit = > sends packets to these Gigabit ports, there are a lot of error packets = > received by these ports . Could anyone give me some help ? =20 > > And I want to know if Pulse transformer 5054 is for 10/100/1000 base-T = > ? =20 > =20 > Thanks! > > ------------------------------------------------------------------ > To unsubscribe from si-list: > si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field > > or to administer your membership from a web page, go to: > //www.freelists.org/webpage/si-list > > For help: > si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > > List FAQ wiki page is located at: > http://si-list.org/wiki/wiki.pl?Si-List_FAQ > > List technical documents are available at: > http://www.si-list.org > > List archives are viewable at: > //www.freelists.org/archives/si-list > or at our remote archives: > http://groups.yahoo.com/group/si-list/messages > Old (prior to June 6, 2001) list archives are viewable at: > http://www.qsl.net/wb6tpu > > > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu