XO 1.75 A3 ECOs
Revision as of 22:48, 3 June 2011 by Wad (talk | contribs) (Created page with 'These are recommended engineering change orders (ECOs) to the A3 prototype of the XO-1.75 laptop. This is NOT a list of changes from A3 to B1, that is [[XO1.75_A3…')
These are recommended engineering change orders (ECOs) to the A3 prototype of the XO-1.75 laptop. This is NOT a list of changes from A3 to B1, that is located elsewhere.
SMBus Pullups
These correct a mistake omitting the pullup resistors for the SMBus between the EC and the battery charger. It has been done to all boards.
- Add a 1.3K resistor between PR200 and +3.3VSUS (available at PD31, pin 2).
- Add a 1.3K resistor between PR201 and +3.3VSUS.
External SD Power
This corrects a wiring error. It has been done to all boards.
- Tie PQ64.2 to Q22.2
