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GO TOM! I missed what half of those words
meant but hey more power to you, actually in all good sense it does make sense
is this in only the older ones or the newer ones as well? From: Tom Haynes
[mailto:[EMAIL PROTECTED] I was researching componants on an older ABo and noticed
that the pins on the Media Access Controller that control speed,
duplex and negotiation were all unconnected. When these three
pins (11, 40 and 42) are low the MAC is forced in to 10Mb mode half duplex and
auto-negotiation advertisement is turned off. I would think that ANEG (pin 40)
should be tied high so that the device pluged in to it would not have to
rely on a fall back feature to guess at the speed? Should pins 11 an 42 be tied
low instead of being left open? I assume that being left open allows them to be
influenced by RF and IF noise as well as static to the point where the MAC
can't decide if they are HI or LOW or thinks they are hi due to the HIGH-Z
state they are in. I am of the opinion that some of the ethernet related issues
are causes by this HIGH-Z state. |
Title: Message
