Efficient power management of UART interface
First Claim
Patent Images
1. An apparatus comprising:
- logic to cause a link to enter into a low power consumption state in response to a message exchange over data lines of a UART (Universal Asynchronous Receiver/Transmitter) interface,wherein the message exchange over the data lines of the UART interface is to be followed by a modification to one or more flow control signals coupled to the UART interface, wherein one or more subsequent interrupts are to be masked after the link enters into the low power consumption state, wherein the one or more masked subsequent interrupts are to be unmasked at both ends of the link after a wake operation, responsive to an interrupt signal or a CTS (Clear To Send) signal, is enabled.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus relating to efficient and/or robust link power management of a UART (Universal Asynchronous Receiver/Transmitter) interface are described. In an embodiment, logic causes a link to enter into a low power consumption state in response to a message exchange over data lines of a UART (Universal Asynchronous Receiver/Transmitter) interface. The message exchange over the data lines of the UART interface is followed by a modification to one or more flow control signals coupled to the UART interface. Other embodiments are also disclosed.
-
Citations
25 Claims
-
1. An apparatus comprising:
-
logic to cause a link to enter into a low power consumption state in response to a message exchange over data lines of a UART (Universal Asynchronous Receiver/Transmitter) interface, wherein the message exchange over the data lines of the UART interface is to be followed by a modification to one or more flow control signals coupled to the UART interface, wherein one or more subsequent interrupts are to be masked after the link enters into the low power consumption state, wherein the one or more masked subsequent interrupts are to be unmasked at both ends of the link after a wake operation, responsive to an interrupt signal or a CTS (Clear To Send) signal, is enabled. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method comprising:
-
causing a link to enter into a low power consumption state in response to a message exchange over data lines of a UART (Universal Asynchronous Receiver/Transmitter) interface, wherein the message exchange over the data lines of the UART interface is followed by a modification to one or more flow control signals coupled to the UART interface, wherein one or more subsequent interrupts are masked after the link enters into the low power consumption state, wherein the one or more masked subsequent interrupts are unmasked at both ends of the link after a wake operation, responsive to an interrupt signal or a CTS (Clear To Send) signal, is enabled. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A system comprising:
-
a display device; a processor coupled to the display device to cause the display device to display one or more images stored in memory; logic to cause a link to enter into a low power consumption state in response to a message exchange over data lines of a UART (Universal Asynchronous Receiver/Transmitter) interface, wherein the message exchange over the data lines of the UART interface is to be followed by a modification to one or more flow control signals coupled to the UART interface, wherein one or more subsequent interrupts are to be masked after the link enters into the low power consumption state, wherein the one or more masked subsequent interrupts are to be unmasked at both ends of the link after a wake operation, responsive to an interrupt signal or a CTS (Clear To Send) signal, is enabled. - View Dependent Claims (24, 25)
-
Specification