Freescale Semiconductor MCF52277 Reference Manual page 395

Field
13 1 millisecond timer toggle. This bit toggles once per millisecond.
1MST
12 B session end.
BSE 0 VBus is above B session end threshold.
1 VBus is below B session end threshold.
11 B Session valid.
BSV 0 VBus is below B session valid threshold.
1 VBus is above B session valid threshold.
10 A Session valid.
ASV 0 VBus is below A session valid threshold.
1 VBus is above A session valid threshold.
9 A VBus valid.
AVV 0 VBus is below A VBus valid threshold.
1 VBus is above A VBus valid threshold.
8 USB ID.
ID 0 A device.
1 B device.
7–6 Reserved, must be cleared.
5 ID Pull-up. Provides control over the ID pull-up resistor.
IDPU 0 Disable pull-up. ID input not sampled.
1 Enable pull-up.
4 Data pulsing.
DP 0 The pull-up on DP is not asserted.
1 The pull-up on DP is asserted for data pulsing during SRP.
3 OTG Termination. This bit must be set with the OTG module in device mode.
OT 0 Disable pull-down on DM.
1 Enable pull-down on DM.
2 Reserved, must be cleared.
1 VBUS charge. Setting this bit causes the VBUS line to charge. This is used for VBus pulsing during SRP.
VC
0 VBUS discharge. Setting this bit causes VBUS to discharge through a resistor.
VD
20.3.4.15 USB Mode Register (USBMODE)
This register is not defined in the EHCI specification. It controls the operating mode of the module.
Freescale Semiconductor
Table 20-33. OTGSC Field Descriptions (continued)
MCF52277 Reference Manual, Rev. 1
Universal Serial Bus Interface – On-The-Go Module
Description
20-37