[sigrok-dumps.git] / usb_power_delivery / pixel_2015 / README

-------------------------------------------------------------------------------
USB Power Delivery protocol
-------------------------------------------------------------------------------

This directory contains captures of data communication on the Control Channels
of Type-C USB connectors using the USB Power Delivery protocol.

Details:
http://www.usb.org/developers/powerdelivery/


Logic analyzer setup
--------------------

A 'Twinkie' USB type-C interposer was used to capture the communication
on the CCx pins:

  Probe      Signal
  -----------------
  CC1        Control Channel 1
  CC2        Control Channel 2

The type-C connectors are reversible, so the actual communication might
happen on CC1 or CC2 depending the polarity of the plug inside the receptacle.

Data
----

Captured Between a Google Pixel 2015 laptop and both its 5V/12/V/20V power
supply and an USB-C to HDMI video dongle.

The sigrok command lines used were:

  sigrok-cli -d chromium-twinkie --continuous -o power_supply_20V.sr 
  sigrok-cli -d chromium-twinkie --continuous -o hdmi_dongle.sr
Commit	Line	Data
bc21739c VP	1	-------------------------------------------------------------------------------
	2	USB Power Delivery protocol
	3	-------------------------------------------------------------------------------
	4
	5	This directory contains captures of data communication on the Control Channels
	6	of Type-C USB connectors using the USB Power Delivery protocol.
	7
	8	Details:
	9	http://www.usb.org/developers/powerdelivery/
	10
	11
	12	Logic analyzer setup
	13	--------------------
	14
	15	A 'Twinkie' USB type-C interposer was used to capture the communication
	16	on the CCx pins:
	17
	18	Probe Signal
	19	-----------------
	20	CC1 Control Channel 1
	21	CC2 Control Channel 2
	22
	23	The type-C connectors are reversible, so the actual communication might
	24	happen on CC1 or CC2 depending the polarity of the plug inside the receptacle.
	25
	26	Data
	27	----
	28
	29	Captured Between a Google Pixel 2015 laptop and both its 5V/12/V/20V power
	30	supply and an USB-C to HDMI video dongle.
	31
	32	The sigrok command lines used were:
	33
	34	sigrok-cli -d chromium-twinkie --continuous -o power_supply_20V.sr
	35	sigrok-cli -d chromium-twinkie --continuous -o hdmi_dongle.sr
	36