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| author | Keith Short <keithshort@chromium.org> | 2019-08-30 11:32:50 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-09-18 21:52:35 +0000 |
| commit | 580a54658ad27550a1da5cd6077b901a12d447f2 (patch) | |
| tree | 1f55fa8893796f6dc1fe116552228881cb23aaa9 /docs/usb-c.md | |
| parent | 89d7b00c20a650d118446fe5ef987f7766616ea0 (diff) | |
| download | chrome-ec-580a54658ad27550a1da5cd6077b901a12d447f2.tar.gz | |
doc: Add additional USB terms
Add more USB terms to the EC glossary.
BUG=none
BRANCH=none
TEST=none
Change-Id: Ibc2c0d43959749d9527de08337f4a83b41a429ce
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1778634
Reviewed-by: Jett Rink <jettrink@chromium.org>
Diffstat (limited to 'docs/usb-c.md')
| -rw-r--r-- | docs/usb-c.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/docs/usb-c.md b/docs/usb-c.md index 79b3145bdf..d6327d6dc7 100644 --- a/docs/usb-c.md +++ b/docs/usb-c.md @@ -75,6 +75,16 @@ Modes in the EC codebase. * Downstream Facing Port. The USB Data role that is typical for a host machine (e.g. device running ChromeOS). +* E-Mark {#emark} + * Electronically marked cable. A USB-C cable that contains an embedded + chip in the cable, used to identify the capabilities of the cable. + +* VCONN {#vconn} + * Connector Voltage. A dedicated power supply rail for [E-Mark](#emark) + cables and other accessory functions (such as display dongles, and + docks). VCONN re-uses one of the CC1/CC2 signals to provide 5 volt, 1 + watt, of power. + ## Different PD stacks Right now platform/ec has two different implementations of USB-C PD stack. |