SYSTEMS AND METHODS PROVIDING A LOW-POWER MODE FOR SERIAL LINKS

Systems and methods to provide a low-power mode for serial links are disclosed. One embodiment of such a system includes a transmitter coupled to a link; a receiver coupled to the link and configuredto receive signals over the link from the transmitter; a transmit control module configured to cause the transmitter to enter and exit a low-power mode; and a clock module coupled to the transmitter and configured to provide a clock signal to the transmitter, wherein the clock module is further configured to provide the clock signal as a divided clock signal to the transmitter when the transmitteris in the low-power mode, further wherein the divided clock signal has a same phase as the clock signal before entry into the low-power mode. 本文公开了为串行链路提供低功率模式的系统和方法。这种系统的一个示例包括：发射机，被耦合到链路；接收机，被耦合到链路并被配置为通过链路从发射机接收信号；发射控制模块，被配置为使发射机进入或退出低功率模式；以及时钟模块，被耦合到发射机并被配置为向发射机提供时钟信号，其中时钟模块进一步被配置为当发射机处于低功率模式时，向发射机提供时钟信号作为分频时钟信号，进一步地其中，分频时钟信号具有与进入低功率模式之前的时钟信号相同的相位。