AM1707_16 Datasheet, PDF (32/200 Pages) Texas Instruments – AM1707 ARM® Microprocessor

AM1707
SPRS637E – FEBRUARY 2010 – REVISED JUNE 2014
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3.6.22 Unused USB0 (USB2.0) and USB1 (USB1.1) Pin Configurations
If one or both USB modules on the device are not used, then some of the power supplies to those
modules may not be required. This can eliminate the requirement for a 1.8V power supply to the USB
modules. The required pin configurations for unused USB modules are shown below.
Table 3-24. Unused USB0 and USB1 Pin Configurations
SIGNAL NAME
USB0_DM
USB0_DP
USB0_VDDA33
USB0_VDDA18
USB0_ID
USB0_VBUS
USB0_DRVVBUS/GP4[15]
USB0_VDDA12
USB1_DM
USB1_DP
USB1_VDDA33
USB1_VDDA18
AHCLKX0/AHCLKX2/USB_REFCLKIN/
GP2[11]
Configuration
(When USB0 and USB1 are not used)
Configuration
(When USB0 is used
and USB1 is not used)
No connect
Use as USB0 function
No connect
Use as USB0 function
No connect
3.3V
No connect
1.8V
No connect
Use as USB0 function
No connect
Use as USB0 function
No connect or use as alternate function
Use as USB0 or alternate function
Internal USB0 PHY output connected to an external 0.22μF filter capacitor, even if USB0 is
not used.
No connect
VSS
No connect
VSS
No connect
No connect
No connect
No connect
No connect or use as alternate function
Use as USB0 or alternate function
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