Datasheet

566
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
• PULLD_DIS: Pull-Down Disable
When set, there is no pull-down on DP & DM. (DM Pull-Down = DP Pull-Down = 0).
Note: If the DETACH bit is also set, device DP & DM are left in high impedance state.
(See DETACH description above.)
DETACH PULLD_DIS DP DM Condition
0 0 Pull up Pull down Not recommended
0 1 Pull up High impedance state VBUS present
1 0 Pull down Pull down No VBUS
1 1 High impedance state High impedance state VBUS present & software disconnect