Hi I am doing GMII timing analysis between Dual processor (BCM12500) and Gigabit Ethernet Transceiver (BCM5421). It is source synchronous at 125MHz frequency. 1) I want to know what are the timing quations and timing parameters i have to consider. Is their any application note on this. 2) If i match the length between Transmit clock(GTXCLK) and Transmit data(TXD) by considering the package length in the processor(BCM12500) and making all the signals to route in the same layer,then no need to do any timing analysis. Am i correct? Thanks & Regards Ramesh ------------------------------------------------------------------ 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 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