Techniques For Providing Data Rate Changes

摘要

An integrated circuit die includes interface and adapter circuits. The interface circuit exchanges data with an external device outside the integrated circuit die using a first clock signal. The interface circuit has a clock signal generation circuit to generate the first clock signal based on a second clock signal. The adapter circuit exchanges the data with the interface circuit. A frequency of the second clock signal is changed in response to an indication of a change in a data rate of the data. The adapter circuit causes the interface circuit to provide an adjustment to the first clock signal after the frequency of the second clock signal changes. The adapter circuit prevents the exchange of the data between the interface circuit and the external device until the adapter circuit receives an indication of completion of the adjustment to the first clock signal.

主权项

1. An integrated circuit die comprising:
an interface circuit to exchange data with an external device that is outside the integrated circuit die, wherein the interface circuit exchanges the data in response to a first clock signal, and wherein the interface circuit comprises a clock signal generation circuit to generate the first clock signal based on a second clock signal; and an adapter circuit to exchange the data with the interface circuit, wherein the adapter circuit causes the interface circuit to provide an adjustment to the first clock signal after a frequency of the second clock signal is changed in response to an indication of a change in a data rate of the data, and wherein the adapter circuit prevents the exchange of data between the interface circuit and the external device until the adapter circuit receives an indication of completion of the adjustment to the first clock signal.