Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

USB BC1.2 vs USB2.0 spec.

Status
Not open for further replies.
K

kickoff1111

Newbie level 6
Joined
Dec 16, 2010
Messages
13
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,374
Hi All,
Is there any one familiar with USB2.0 and BC1.2 spec.?
Device connection detection requires device to pull up 1.5K Ohms resistor, but won't this conflict with BC1.2 charger type handshake electrical characteristics?
BC1.2 requires PD to force a 0.6V at DP when doing handshaking. But the device should be pulled up at DP or DM depending on speed of device per USB2.0 spec.
Won't these signal levels meet contentions when doing charging type handshaking?
Thanks for all your inputs.
Kickoff1111
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top