Texas Instruments EVMK2G, User Manual, Page: 36 / 83

5V
USB1_VBUS
USB1_VBUS
USB-OTG
Micro-AB
Connector
K2G SoC
Common
Mode
Choke
ESD Diodes
(TPD2EUSB30DRTR)
POWER
SWITCH
EN
USB1_DP
USB1_DRVVBUS
USB1_DM
USB1_ID
Copyright © 2016, Texas Instruments Incorporated
USB0_VBUS
POWER
SWITCH
EN
ESD Diodes
(TPD2EUSB30DRTR)
Common
Mode
Choke
K2G SoC
USB
Type A
USB0_DRVVBUS
USB0_ID
USB0_VBUS
USB0_DM
USB0_DP
5V
Copyright © 2016, Texas Instruments Incorporated
System Description
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36 SPRUI65A – April 2016 – Revised January 2018
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Copyright © 2016–2018, Texas Instruments Incorporated
K2G General Purpose Evaluation Module (EVMK2G)
3.22 USB Host
USB0 shall be used for the USB Host interface in the EVMK2G. The USB0ID pin is grounded through a 0-
ohm resistor in order to configure it as USB Host as shown in
Figure 26 . Common mode choke coil and
ESD diodes (TPD2EUSB30DRTR) are used on USB data signals. A power distribution switch
(TPS2051BD) is used to deliver USB power to the devices.
Figure 27. USB Host Interface Block Diagram
3.23 USB Dual Role
USB1 shall be configured as the USB Dual Role in the EVMK2G. The USB Dual Role interface is shown
in
Figure 28 . Common mode choke coil and ESD diodes are used on USB data signals. A power
distribution switch (TPS2051BD) is used to deliver USB power when it acts as a host.
Figure 28. USB Dual Role Interface Block Diagram