Cisco Technology, Inc.

Xilinx, Inc.

Cortina Systems Corporation

Other

Cisco Systems Inc.

Mark Andrew Gustlin

Oded Trainin

Luca Della Chiesa

Mohammed Ismael Tatar

Garry Paul Epps

Rakesh Chopra

Guy Fedorkow

Robert C Olsen

Yiren Huang

Promode Nedungadi

Raymond Kloth

Richard J Wong

Ryan Patrick Donohue

Randall A Johnson

David Doak

James Brian Mckeon

Fredrick Karl Olive Olsson

Adee Ofir Ran

Aviran Kadosh

Kenneth Harvey Potter, Jr

Kenneth H Potter

Med Belhadj

Sebastian H Ziesler

Steven Philip Holmes

Jason Alexander Jones

Rami Zecharia

Christopher J Kappler

Paul A Gresham

Farhad Shafai

Fredrik Olsson

John P Prokopik

Jason Coppens

Michael J Taylor

Varun Satrawla

David Kwong

Bernard Bosi

Rolf Meier

Len Shimoon

Paul Gresham

Mohammed Tatar

Robert T Olsen

Guy C Fedorkow

Symbol multiplexing Physical Medium Attachment (PMA) may be provided. A plurality of first lanes may be received and then Alignment Markers (AMs) from the plurality of first lanes may be used to determine symbol boundaries and identify the plurality of first lanes. Next, groups of the plurality of first lanes may be de-skewed and checkerboard patterns in the plurality of first lanes may be undone. Then the plurality of first lanes may be symbol-wise multiplexed to a plurality of second lanes. The plurality of second lanes may then be sent.

Symbol multiplexing physical medium attachment (PMA)

Techniques for temperature control for multiple dies in an element. A temperature of a first die is measured, in an element comprising the first die and a second die. The second die includes at least a portion of a controller. The temperature of the first die is changed by adjusting activity, from the second die to the first die, based on a target temperature for the first die and the measured temperature for the first die.

Temperature control for multiple die types in a common package

Embodiments herein describe coupling traditional fan and shaper control along with aggregated knowledge of the temperature history of a hardware device to optimally manage the temperature of the hardware device to preserve its expected life while also providing the lower power, best performing solution possible. In one embodiment, a cooling application manages the expected life by trading off performance and power versus temperature to achieve a desired (or accepted) lifetime. In one embodiment, the cooling application calculates a historical temperature value for the hardware device which is then used to determine the expected life of the hardware device.

Hardware device temperature control with expected lifetime calculation

In one embodiment, an apparatus includes n electrical communication channels, m optical communication media interfaces, and a plurality of muxes. The plurality of muxes are configured to receive an information stream. The information stream is carried over the n electrical communication channels and the m optical communication media interfaces. The plurality of muxes are further configured to transform the information stream from v virtual lanes. Each virtual lane includes a plurality of data blocks from the information stream and an alignment block, wherein v is a positive integer multiple of the least common multiple of m and n, v is greater than n, and n is equal to m.

System and method for providing an ethernet interface

In one embodiment, an apparatus includes n electrical communication channels, m optical communication media interfaces, and a plurality of muxes. The plurality of muxes are configured to receive an information stream, the information stream carried over the n electrical communication channels and the m optical communication media interfaces. The plurality of muxes are further configured to transform the information stream from v virtual lanes, each virtual lane comprising a plurality of data blocks from the information stream and an alignment block, wherein v is a positive integer multiple of the least common multiple of m and n.

An apparatus is provided that includes communication channels, and m communication media interfaces, and v virtual lanes. V is a positive integer multiple of the least common multiple of m and n. An information stream is transferred into data and alignment blocks striped across all of the v virtual lanes, the blocks being communicated from the virtual lanes onto the communication channels. The blocks are received on the communication channels. Each of the communication channels transmits a different portion of the blocks striped across all of the v virtual lanes. In more particular embodiments, v&#x3e;=n&#x3e;=m. The communication media interfaces can be electrical and optical. Each of the communication channels can include a SerDes interface operating at least 5 Gigabits per second. Furthermore, each of the m communication media interfaces is configured to transmit a different stream of information over a single optical fiber.

System and method for providing an Ethernet interface

An apparatus is provided that includes n communication channels, and m communication media interfaces, and v virtual lanes. V is a positive integer multiple of the least common multiple of m and n. An information stream is transferred into data and alignment blocks striped across all of the v virtual lanes, the blocks being communicated from the virtual lanes onto the communication channels. The blocks are received on the communication channels. Each of the communication channels transmits a different portion of the blocks striped across all of the v virtual lanes. In more particular embodiments, v&#x3e;=n&#x3e;=m. The communication media interfaces can be electrical and optical. Each of the communication channels can include a SerDes interface operating at least 5 Gigabits per second. Furthermore, each of the m communication media interfaces is configured to transmit a different stream of information over a single optical fiber.

A method, non-transitory computer readable medium and apparatus for correcting a timestamp in a multi-lane communication link with a skew are disclosed. For example, the method receives a data packet, a time stamp for the data packet and a fill level for a lane of the multi-lane communication link carrying the data packet, calculates a corrected timestamp for the data packet and replaces the time stamp for the data packet with the corrected timestamp.

Timestamp correction in a multi-lane communication link with skew

In one embodiment, a method for communicating a sequence of data bits is provided. FEC coding is performed on a received sequence of data bits to produce an FEC coded sequence formatted for a first set of N data lanes. The FEC coded sequence includes FEC data blocks, in which each FEC data block has a plurality of data symbols. Alignment markers are added to the FEC coded sequence and the FEC coded sequence is multiplexed to produce a multiplexed sequence formatted for a second set of M data lanes. The multiplexing is performed only at boundaries between the data symbols or the alignment markers. The multiplexed sequence is transmitted on M data lanes.

Circuit for forward error correction encoding of data blocks across multiple data lanes

An apparatus consisting of a digital communication channel comprised of a multiplicity of lanes where data is striped across the lanes in a predefined sequence. Each lane has the ability to be powered down or powered up in response to the amount of data being held in a transmit buffer at one end of the communication channel. The method consists of monitoring the amount of data being held in the transmit buffer; making the decision of how many lanes are required based on the amount of data; sending signals to cause the required number of lanes to be powered down or powered up; and performing the required power down or power up action at the particular transmitter and receiver. The fill level of the transmit buffer is continually monitored and the required number of active lanes and the striping sequence is calculated and updated as required as a function of the fill level, where a larger amount of data waiting to be transmitted will result in a greater number of lanes being powered up and a smaller amount of data waiting to be transmitted will result in a lesser number of lanes being powered up.

Method and apparatus for adaptive power control in a multi-lane communication channel

In one embodiment, protocol violations of a particular protocol are induced at one or more predetermined intervals within a particular stream of information encoded according to the particular protocol in order to produce a marked particular stream of information for use in subsequent identification of the marked particular stream of information. The marked stream is multiplexed or otherwise communicated to a second device. The second device detects, and typically corrects, the induced protocol violations. And based on which stream of information included the induced protocol violations and the multiplexing/distribution pattern of the other streams of information, the second device can identify which stream is which and process or forward accordingly.

Inducing protocol violations for identifying a stream of information

A high speed multi-lane serial interface and method for constructing frames for such an interface are provided. Frames are constructed for transmission on a multi-lane serial interface. For each of a plurality of transmit channels, packets are fragmented into fragments. Meta-frames are generated having a size defined by a constant meta-frame length&#xd7;number of lanes, each frame having a meta-frame separator and a payload. Per-transmit channel flow control information is received. Each payload has a plurality of bursts, each burst comprising a burst control word and an associated data burst, the burst control word identifying one of said transmit channels to be transmitted on the associated data burst, each data burst comprising one of the fragments for the transmit channel identified in the associated burst control word. The channels to transmit in a given meta-frame are selected as a function of the received flow control information.

High speed packet interface and method

According to various embodiments, high priority traffic is obtained from one of a plurality of virtual channels servicing high priority traffic. High priority traffic is placed in a high priority queue. Low priority traffic is obtained from one of a plurality of virtual channels. A weighting value associated with an element in the active queue is determined. The element corresponds to a virtual channel associated with the low priority traffic. The low priority traffic is placed either in a low priority traffic active queue or a low priority traffic pending queue based on the weighting value.

Priority propagation with a hierarchical asynchronous transfer mode (ATM) scheduler

Growing community of inventors

Campbell, CA, United States of America

Mark Andrew Gustlin