From: Wayne Eckertson [mailto:WayneEckertson@VersaLogic.com]
Sent: Monday, July 22, 2002 12:25 PM
Subject: Control line pull-ups on mixed 3v/5v system
I am designing a system which will support either 3V or 5V PCI adapter cards (not at the same time). On-board devices are 3.3V, 5V tolerant. Which rail should the control lines be pulled to? More simply, will a 3V only device have problems if the control lines are pulled to the 5V rail and vise-versa?