The USB Battery Charging Specification Revision 1.2 (released in 2010) makes clear that there are safety limits to the rated current at 5 A coming from USB 2.0. On the other hand, several changes are made and limits are increasing including allowing 1.5 A on charging downstream ports for unconfigured devices, allowing high speed communication while having a current up to 1.5 A, and allowing a maximum current of 5 A. Also, revision 1.2 removes support for USB ports type detection via resistive detection mechanisms.
What does revision 1.2 remove?
USB ports type detection via resistive detection mechanisms
On the other hand, several changes are made and limits are increasing including allowing 1.5 A on charging downstream ports for unconfigured devices, allowing high speed communication while having a current up to 1.5 A, and allowing a maximum current of 5 A. Also, revision 1.2 removes support for USB ports type detection via resistive detection mechanisms.
On the other hand, several changes are made and limits are increasing including allowing one point five A on charging downstream ports for unconfigured devices, allowing high speed communication while having a current up to one point five A, and allowing a maximum current of five A. Also, revision one point two removes support for USB ports type detection via resistive detection mechanisms.
What does revision one point two remove?