Datasheet

288

32133D–11/2011

UC3D

Figure 19-2. Speed Selection in device mode

19.6.1.5 Data management

Endpoints and pipe buffers can be allocated anywhere in the embedded memory (CPU RAM or

HSB RAM).

See ”RAM management” on page 292.

19.6.1.6 Pad Suspend

Figure 19-3 illustrates the behavior of the USB pad in device mode.

Figure 19-3. Pad Behavior

• In Idle state, the pad is in low power consumption mode.

• In Active state, the pad is working.

Figure 19-4 illustrates the pad events leading to a PAD state change.

UDCON.DETACH

UDCON.LS

VBUS

Idle

Active

USBE = 1

& DETACH = 0

& Suspend

USBE = 0

| DETACH = 1

| Suspend