Is Tx side a PRBS checker (verse a PRBS generator on the RX)? That's the way I've typicaly seen it on many devices (incl ours). - Jim Antonellis janton@xxxxxxxxxxxxx Sandburst Corp www.sandburst.com Office: 978.689.1669 Cell: 978.618.4745 This message and any attachments are Confidential and may be Legally Privileged. It is intended solely for the addressee. If you are not the intended recipient, please delete this message from your system and notify us immediately. Any dis-closure, copying, distribution or action taken or omitted to be taken by an unintended recipient in reliance on this message is prohibited and may be unlawful. -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Roy Messinger Sent: Monday, June 20, 2005 9:46 AM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] why do one need PRBS Rx AND Tx? Hi, I'm looking at some data sheet of a cross point switch (of Mindspeed) which i need for something i'm working on and there's a fucntion called PRBS Tx/Rx. Now, I'm a newbie in this busyness, so I've tried to look at the net, finding some material about this PRBS. I did find an exact definition at * www.wikipedia.com* <http://gmail.google.com/gmail/www.wikipedia.com> and at this link *//www.freelists.org/archives/si-list/03-2004/msg00289.html*<http://www .freelists.org/archives/si-list/03-2004/msg00289.html> But my component has 2 PRBS built inside. One for Rx and one for Tx. I don't understand why I need 2 components. The goal is to check the crosspoint and so we need a PRBS to make a random pattern of signals, which get inside the cross point switch to check its functionality (am i right here?). But why should I need receive PRBS and transmit? any ideas? Thanks! Roy ------------------------------------------------------------------ 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