From 60dbcdeefe563b8ecef3452556ae0e52b8ef0fc0 Mon Sep 17 00:00:00 2001 From: Martin Pieuchot Date: Mon, 10 Mar 2014 12:19:38 +0000 Subject: Mention rate-matching hub since newer EHCI controllers come without companion controller. --- share/man/man4/ehci.4 | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'share') diff --git a/share/man/man4/ehci.4 b/share/man/man4/ehci.4 index 735823a71d1..6be8b21f0c8 100644 --- a/share/man/man4/ehci.4 +++ b/share/man/man4/ehci.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ehci.4,v 1.11 2008/06/26 05:42:06 ray Exp $ +.\" $OpenBSD: ehci.4,v 1.12 2014/03/10 12:19:37 mpi Exp $ .\" .\" Copyright (c) 2001 The NetBSD Foundation, Inc. .\" All rights reserved. @@ -27,7 +27,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: June 26 2008 $ +.Dd $Mdocdate: March 10 2014 $ .Dt EHCI 4 .Os .Sh NAME @@ -52,9 +52,10 @@ This means that they normally have one or more companion controllers .Xr ohci 4 or .Xr uhci 4 ) -handling USB 1.x devices. -Consequently each USB connector is electrically -connected to two USB controllers. +or an internal rate-matching hub to handle USB 1.x devices. +.Pp +If at least one companion controller is present, each USB connector is +electrically connected to two USB controllers. The handling of this is totally automatic, but can be noticed since USB 1.x and USB 2.0 devices plugged in to the same connector appear to connect to different USB buses. -- cgit v1.2.3