Information

3.9.1.3 USB power management
The regulator should be put into STANDBY mode whenever the chip is in Stop mode.
This can be done by setting the SIM_SOPT1[USBSTBY] bit.
3.9.1.4 USB controller configuration
This section summarizes how the module has been configured in the chip. For a
comprehensive description of the module itself, see the module’s dedicated chapter.
Signal multiplexing
Module signals
Register
access
USB controller
Peripheral
bridge 0
Crossbar switch
Transfers
Figure 3-52. USB controller configuration
Table 3-60. Reference links to related information
Topic Related module Reference
Full description USB controller USB controller
System memory map System memory map
Clocking Clock Distribution
Transfers Crossbar switch Crossbar switch
Signal Multiplexing Port control Signal Multiplexing
NOTE
When USB is not used in the application, it is recommended
that the USB regulator VREGIN and VOUT33 pins remain
floating.
3.9.1.5 USB DCD Configuration
This section summarizes how the module has been configured in the chip. For a
comprehensive description of the module itself, see the module’s dedicated chapter.
Communication interfaces
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
136 Freescale Semiconductor, Inc.