Expanded test mode under support for host controller

摘要

An expanded test mode for host controller is provided with support. In the example of usb - host control learn, a widened host controller is provided, which controls the high-speed traffic. Furthermore, at least one secondary host controller controls the fully speed - and / or lower speed traffic. The expanded host controller comprises a test circuit for controlling a usb - transceiver - macro cell, in order to fully speed - and / or low speed - test functions to carry out. The test functions can be a test - j - function, a test - k - function, a single - ended - zero - test function and the transmission of test patterns contain.