Technologies for autonegotiating 10G and 1G serial communications over copper cable

Patent metadata

Field	Value
Publication number	US-10623263-B2
Application number	US-201916422787-A
Country	US
Kind code	B2
Filing date	May 24, 2019
Priority date	Dec 3, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

Technologies for autonegotiation of communications operational modes over copper cable include a network port logic having a communication link coupled to a remote link partner. The network port logic may start an autonegotiation protocol upon reset, when the link is broken, or upon manual renegotiation. The network port logic transmits an autonegotiation page to the remote link partner that indicates single-lane communications ability over copper cable. The network port logic receives an autonegotiation page from the link partner indicating single-lane communications ability over copper cable. If the network port logic and link partner have a common single-lane communication ability, the link may be activated. The autonegotiation pages may be base pages or next pages. The single-lane communication ability may be indicated by one or more bits of the autonegotiation pages. The link may be established at 1 gigabit or 10 gigabits per second. Other embodiments are described and claimed.

First claim

The invention claimed is:

1. An integrated chip device comprising:
one or more ports comprising circuitry to:
send first auto-negotiation data to a link partner, wherein the first auto-negotiation data comprises a base page, the base page comprises a technology ability field to indicate that a first operational mode and a second operational mode are supported by the device, the first operational mode comprises a single-lane communication over copper cable mode, and the second operational mode comprises a multi-lane communication over copper cable mode;
receive auto-negotiation data from the remote link partner, wherein the second auto-negotiation data indicates that the link partner also supports the first operational mode and the second operational mode; and
activate a communication link in one of the first or second operational modes to couple the device to the link partner based on an auto-negotiation based on the first and second auto-negotiation data.

2. The device of claim 1 , wherein the one or more ports comprise a physical coding sublayer (PCS).

3. The device of claim 1 , wherein the one or more ports comprise a forward error correction (FEC) sublayer.

4. The device of claim 1 , wherein the first operational mode comprises a single lane 10 Gb/s operational mode over copper.

5. The device of claim 1 , wherein the first operational mode comprises a single lane 1 Gb/s operational mode over copper.

6. The device of claim 1 , wherein the second operational mode comprises a multi-lane 40 Gb/s operational mode.

7. The device of claim 1 , wherein the base page further indicates that a third operational mode is supported by the device.

8. The device of claim 7 , wherein the third operational mode comprises a backplane operational mode.

9. The device of claim 8 , wherein the third operational mode comprises a single-lane mode.

10. The device of claim 8 , wherein the third operational mode comprises a multi-lane mode.

11. The device of claim 1 , wherein the second operational mode comprises communication over four lanes.

12. The device of claim 1 , wherein the one or more ports comprises a serializer/deserializer (SerDes).

13. The device of claim 1 , wherein the base page comprises a differential Manchester encoding (DME) page.

14. The device of claim 1 , wherein the second auto-negotiation data comprises one of a base page or a next page.

15. The device of claim 1 , wherein the communication link comprises an Ethernet communication link.

16. An apparatus comprising:
a transceiver device comprising:
one or more ports comprising an auto-negotiation module to:
send first auto-negotiation data to a link partner of the transceiver device, wherein the first auto-negotiation data comprises a base page, the base page comprises a technology ability field to indicate that a first operational mode and a second operational mode are supported by the transceiver device, the first operational mode comprises a single-lane communication over copper cable mode, and the second operational mode comprises a multi-lane communication over backplane mode;
receive auto-negotiation data from the remote link partner, wherein the second auto-negotiation data indicates that the link partner also supports the first operational mode and the second operational mode; and
activate a communication link in one of the first or second operational modes based on an auto-negotiation, wherein the auto-negotiation uses the first and second auto-negotiation data, and the communication link is to couple the transceiver device to the link partner based on reception of the second auto-negotiation data.

17. A system comprising:
a host processor; and
an integrated chip transceiver device coupled to the host processor and comprising:
one or more ports comprising circuitry to:
send first auto-negotiation data to a link partner, wherein the first auto-negotiation data comprises a base page, the base page comprises a technology ability field to indicate that a first operational mode and a second operational mode are supported by the device, the first operational mode comprises a single-lane communication over copper cable mode, and the second operational mode comprises a multi-lane communication over copper cable mode;
receive auto-negotiation data from the remote link partner, wherein the second auto-negotiation data indicates that the link partner also supports the first operational mode and the second operational mode; and
perform auto-negotiation to activate a communication link in one of the first or second operational modes to couple the device to the link partner based on reception of the second auto-negotiation data.

18. The system of claim 17 , further comprising a network switch coupled to the integrated chip transceiver device.

19. The system of claim 17 , wherein the system comprises a server system.

20. The system of claim 19 , wherein the server system comprises a blade server system.

Assignees

• Intel Corp

Inventors

• Lusted Kent C
• Ran Adee O

Classifications

• H04L41/0886 Primary

  Fully automatic configuration · CPC title

• H04L49/3054

  Auto-negotiation, e.g. access control between switch gigabit interface connector [GBIC] and link · CPC title

• H04L69/24

  Negotiation of communication capabilities · CPC title