Providing a consolidated sideband communication channel between devices
First Claim
1. An apparatus comprising:
- a protocol stack including a transaction layer and a link layer;
a first physical (PHY) unit coupled to the protocol stack to provide communication between the apparatus and a device coupled to the apparatus via a physical link, the first PHY unit of a low power communication protocol and including a first physical unit circuit; and
a second PHY unit coupled to the protocol stack to provide communication between the apparatus and the device via a sideband channel coupled between the apparatus and the device separate from the physical link, wherein the second PHY unit includes a second physical unit circuit.
2 Assignments
0 Petitions
Accused Products
Abstract
In an embodiment, the present invention includes a protocol stack having a transaction layer and a link layer. In addition a first physical (PHY) unit is coupled to the protocol stack to provide communication between a processor and a device coupled to the processor via a physical link, where the first PHY unit is of a low power communication protocol and includes a first physical unit circuit. In turn, a second PHY unit is coupled to the protocol stack to provide communication between the processor and the device via a sideband channel coupled between the multicore processor and the device separate from the physical link, where the second PHY unit includes a second physical unit circuit. Other embodiments are described and claimed.
-
Citations
24 Claims
-
1. An apparatus comprising:
-
a protocol stack including a transaction layer and a link layer; a first physical (PHY) unit coupled to the protocol stack to provide communication between the apparatus and a device coupled to the apparatus via a physical link, the first PHY unit of a low power communication protocol and including a first physical unit circuit; and a second PHY unit coupled to the protocol stack to provide communication between the apparatus and the device via a sideband channel coupled between the apparatus and the device separate from the physical link, wherein the second PHY unit includes a second physical unit circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A method comprising:
-
determining whether a peripheral device coupled to a host device includes a second physical (PHY) unit coupled to a sideband interconnect; if so, communicating a sideband transaction to the peripheral device via a second PHY unit of the host device coupled to the sideband interconnect; and otherwise communicating the sideband transaction to the peripheral device via a first PHY unit of the host device coupled to a physical link coupled to the peripheral device and separate from the sideband interconnect. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A system comprising:
a multicore processor including a plurality of cores and a protocol stack to enable communication between the multicore processor and a peripheral device via a physical link, the protocol stack including; a transaction layer and a link layer; a first physical (PHY) unit coupled to the protocol stack to provide communication between the multicore processor and a device coupled to the multicore processor via a physical link, the first PHY unit of a low power communication protocol and including a first physical unit circuit; and a second PHY unit coupled to the protocol stack to provide communication between the multicore processor and the device via a sideband channel coupled between the multicore processor and the device separate from the physical link, wherein the second PHY unit includes a second physical unit circuit; and
the device coupled to the multicore processor.- View Dependent Claims (22, 23, 24)
Specification