Earlier I worked on LM3s3748 evaluation board where diodes TPD2E001DRLR were used to provide ESD protection for USB host and device connectors. But I didn't find any such provision in LM4F232 evaluation board.
Is it not necessary? or it is given internally for USB data pins?
I am developing USB OTG (MSC host and CDC device) using TM4C123GH6PZ controller.