公开(公告)号：US11157350B2

公开(公告)日：2021-10-26

申请号：US15929946

申请日：2020-05-29

Applicant: Intel Corporation

Inventor： Daniel S. Froelich ,  Debendra Das Sharma ,  Fulvio Spagna ,  Per E. Fornberg ,  David Edward Bradley

IPC: G06F11/08 ,  G06F13/14 ,  G06F11/10 ,  G06F11/22 ,  H04L1/00

Abstract: There is disclosed in an example an interconnect apparatus having: a root circuit; and a downstream circuit comprising at least one receiver; wherein the root circuit is operable to provide a margin test directive to the downstream circuit during a normal operating state; and the downstream circuit is operable to perform a margin test and provide a result report of the margin test to the root circuit. This may be performed in-band, for example in the L0 state. There is also disclosed a system comprising such an interconnect, and a method of performing margin testing.

公开(公告)号：US10931329B2

公开(公告)日：2021-02-23

申请号：US15394278

申请日：2016-12-29

Applicant: Intel Corporation

Inventor： Rahul R. Shah ,  William R. Halleck ,  Fulvio Spagna ,  Venkatraman Iyer

IPC: H04L12/407 ,  H04B3/36 ,  H04L12/933 ,  H04L12/803 ,  G06F13/40

Abstract: An apparatus includes an agent to facilitate communication in one of two or more modes, where a first of the two or more modes involves communication over links including a first number of lanes and a second of the two or more modes involves communication over links including a second number of lanes, and the first number is greater than the second number. The apparatus further includes a memory including data to indicate which of the two or modes applies to a particular link and a multiplexer to reverse lane numbering on links including either the first number of lanes or the second number of lanes.

公开(公告)号：US20210034565A1

公开(公告)日：2021-02-04

申请号：US16926524

申请日：2020-07-10

Applicant: Intel Corporation

Inventor： Michelle C. Jen ,  Minxi Gao ,  Debendra Das Sharma ,  Fulvio Spagna ,  Bruce A. Tennant ,  Noam Dolev Geldbard

IPC: G06F13/42

Abstract: An interface couples a controller to a physical layer (PHY) block, where the interface includes a set of data pins comprising transmit data pins to send data to the PHY block and receive data pins to receive data from the PHY block. The interface further includes a particular set of pins to implement a message bus interface, where the controller is to send a write command to the PHY block over the message bus interface to write a value to at least one particular bit of a PHY message bus register, bits of the PHY message bus register are mapped to a set of control and status signals, and the particular bit is mapped to a recalibration request signal to request that the PHY block perform a recalibration.

公开(公告)号：US10248591B2

公开(公告)日：2019-04-02

申请号：US15393153

申请日：2016-12-28

Applicant: Intel Corporation

Inventor： Robert J. Safranek ,  Robert G. Blankenship ,  Venkatraman Iyer ,  Jeff Willey ,  Robert H. Beers ,  Darren S. Jue ,  Arvind A. Kumar ,  Debendra Das Sharma ,  Jeffrey C. Swanson ,  Bahaa Fahim ,  Vedaraman Geetha ,  Aaron T. Spink ,  Fulvio Spagna ,  Rahul R. Shah ,  Sitaraman V. Iyer ,  William Harry Nale ,  Abhishek Das ,  Simon P. Johnson ,  Yuvraj S. Dhillon ,  Yen-Cheng Liu ,  Raj K. Ramanujan ,  Robert A. Maddox ,  Herbert H. Hum ,  Ashish Gupta

IPC: G06F13/22 ,  G06F12/0831 ,  G06F13/42 ,  G06F8/71 ,  G06F8/77 ,  G06F9/30 ,  G06F12/0806 ,  H04L12/933 ,  G06F9/46 ,  G06F13/40 ,  G06F12/0813 ,  G06F12/0815 ,  G06F9/445 ,  G06F1/3287 ,  G06F11/10 ,  H04L9/06 ,  G06F12/0808 ,  H04L12/741 ,  G06F8/73 ,  H04L12/46

Abstract: A physical layer (PHY) is coupled to a serial, differential link that is to include a number of lanes. The PHY includes a transmitter and a receiver to be coupled to each lane of the number of lanes. The transmitter coupled to each lane is configured to embed a clock with data to be transmitted over the lane, and the PHY periodically issues a blocking link state (BLS) request to cause an agent to enter a BLS to hold off link layer flit transmission for a duration. The PHY utilizes the serial, differential link during the duration for a PHY associated task selected from a group including an in-band reset, an entry into low power state, and an entry into partial width state.

公开(公告)号：US10146733B2

公开(公告)日：2018-12-04

申请号：US15167461

申请日：2016-05-27

Applicant: Intel Corporation

Inventor： Venkatraman Iyer ,  Darren S. Jue ,  Robert G. Blankenship ,  Fulvio Spagna ,  Debendra Das Sharma ,  Jeffrey C. Swanson

IPC: G06F13/42 ,  G06N99/00 ,  G06F1/24 ,  G06F1/32 ,  G06F13/16

Abstract: A periodic control window is embedded in a link layer data stream to be sent over a serial data link, where the control window is configured to provide physical layer information including information for use in initiating state transitions on the data link. The link layer data can be sent during a link transmitting state of the data link and the control window can interrupt the sending of flits. In one aspect, the information includes link width transition data indicating an attempt to change the number of active lanes on the link.

公开(公告)号：US09531393B2

公开(公告)日：2016-12-27

申请号：US14624429

申请日：2015-02-17

Applicant: Intel Corporation

Inventor： Wenyan Vivian Jia ,  Shenggao Li ,  Fulvio Spagna

IPC: H03L7/087 ,  H03D13/00 ,  G04F10/00

CPC classification number: H03L7/087 ,  G04F10/005 ,  H03D13/00

Abstract: Described is an apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first output indicating the coarse phase difference; and a second PFD, coupled to the first PFD, to determine a fine phase difference between the first clock signal and the second clock signal, the second PFD to generate a second output indicating the fine phase difference.

公开(公告)号：US11741030B2

公开(公告)日：2023-08-29

申请号：US17134242

申请日：2020-12-25

Applicant: Intel Corporation

Inventor： Robert J. Safranek ,  Robert G. Blankenship ,  Venkatraman Iyer ,  Jeff Willey ,  Robert Beers ,  Darren S. Jue ,  Arvind A. Kumar ,  Debendra Das Sharma ,  Jeffrey C. Swanson ,  Bahaa Fahim ,  Vedaraman Geetha ,  Aaron T. Spink ,  Fulvio Spagna ,  Rahul R. Shah ,  Sitaraman V. Iyer ,  William Harry Nale ,  Abhishek Das ,  Simon P. Johnson ,  Yuvraj S. Dhillon ,  Yen-Cheng Liu ,  Raj K. Ramanujan ,  Robert A. Maddox ,  Herbert H. Hum ,  Ashish Gupta

IPC: G06F13/22 ,  H04L49/15 ,  G06F12/0813 ,  G06F12/0815 ,  G06F12/0831 ,  G06F13/42 ,  G06F8/71 ,  G06F8/77 ,  G06F9/30 ,  G06F12/0806 ,  G06F9/46 ,  G06F13/40 ,  G06F9/445 ,  G06F1/3287 ,  G06F11/10 ,  H04L9/06 ,  G06F12/0808 ,  H04L45/74 ,  G06F8/73 ,  H04L12/46

CPC classification number: G06F13/22 ,  G06F1/3287 ,  G06F8/71 ,  G06F8/77 ,  G06F9/30145 ,  G06F9/44505 ,  G06F9/466 ,  G06F11/1004 ,  G06F12/0806 ,  G06F12/0808 ,  G06F12/0813 ,  G06F12/0815 ,  G06F12/0831 ,  G06F12/0833 ,  G06F13/4022 ,  G06F13/4068 ,  G06F13/4221 ,  G06F13/4282 ,  G06F13/4286 ,  G06F13/4291 ,  H04L9/0662 ,  H04L49/15 ,  G06F8/73 ,  G06F13/4273 ,  G06F2212/1016 ,  G06F2212/2542 ,  G06F2212/622 ,  H04L12/4641 ,  H04L45/74 ,  Y02D10/00 ,  Y02D30/00

Abstract: A physical layer (PHY) is coupled to a serial, differential link that is to include a number of lanes. The PHY includes a transmitter and a receiver to be coupled to each lane of the number of lanes. The transmitter coupled to each lane is configured to embed a clock with data to be transmitted over the lane, and the PHY periodically issues a blocking link state (BLS) request to cause an agent to enter a BLS to hold off link layer flit transmission for a duration. The PHY utilizes the serial, differential link during the duration for a PHY associated task selected from a group including an in-band reset, an entry into low power state, and an entry into partial width state.

公开(公告)号：US20190391939A1

公开(公告)日：2019-12-26

申请号：US16285035

申请日：2019-02-25

Applicant: Intel Corporation

Inventor： Robert J. Safranek ,  Robert G. Blankenship ,  Venkatraman Iyer ,  Jeff Willey ,  Robert Beers ,  Darren S. Jue ,  Arvind A. Kumar ,  Debendra Das Sharma ,  Jeffrey C. Swanson ,  Bahaa Fahim ,  Vedaraman Geetha ,  Aaron T. Spink ,  Fulvio Spagna ,  Rahul R. Shah ,  Sitaraman V. Iyer ,  William Harry Nale ,  Abhishek Das ,  Simon P. Johnson ,  Yuvraj S. Dhillon ,  Yen-Cheng Liu ,  Raj K. Ramanujan ,  Robert A. Maddox ,  Herbert H. Hum ,  Ashish Gupta

IPC: G06F13/22 ,  G06F12/0808 ,  H04L9/06 ,  G06F13/42 ,  G06F11/10 ,  G06F13/40 ,  G06F1/3287 ,  G06F9/445 ,  G06F9/46 ,  G06F12/0831 ,  G06F12/0806 ,  G06F9/30 ,  G06F8/77 ,  G06F8/71 ,  G06F12/0815 ,  G06F12/0813 ,  H04L12/933

Abstract: A physical layer (PHY) is coupled to a serial, differential link that is to include a number of lanes. The PHY includes a transmitter and a receiver to be coupled to each lane of the number of lanes. The transmitter coupled to each lane is configured to embed a clock with data to be transmitted over the lane, and the PHY periodically issues a blocking link state (BLS) request to cause an agent to enter a BLS to hold off link layer flit transmission for a duration. The PHY utilizes the serial, differential link during the duration for a PHY associated task selected from a group including an in-band reset, an entry into low power state, and an entry into partial width state

公开(公告)号：US09985637B2

公开(公告)日：2018-05-29

申请号：US15391585

申请日：2016-12-27

Applicant: Intel Corporation

Inventor： Wenyan Vivian Jia ,  Shenggao Li ,  Fulvio Spagna

IPC: H03L7/087 ,  G04F10/00

CPC classification number: H03L7/087 ,  G04F10/005 ,  H03D13/00

Abstract: Described is an apparatus comprising: a first phase frequency detector (PFD) to determine a coarse phase difference between a first clock signal and a second clock signal, the first PFD to generate a first output indicating the coarse phase difference; and a second PFD, coupled to the first PFD, to determine a fine phase difference between the first clock signal and the second clock signal, the second PFD to generate a second output indicating the fine phase difference.

公开(公告)号：US09916266B2

公开(公告)日：2018-03-13

申请号：US15237291

申请日：2016-08-15

Applicant: Intel Corporation

Inventor： Venkatraman Iyer ,  Darren S. Jue ,  Robert G. Blankenship ,  Fulvio Spagna ,  Ashish Gupta

IPC: G06F13/40 ,  G06F12/08 ,  G06F13/22 ,  G06F13/42 ,  G06F1/32

CPC classification number: G06F13/22 ,  G06F1/3287 ,  G06F8/71 ,  G06F8/73 ,  G06F8/77 ,  G06F9/30145 ,  G06F9/44505 ,  G06F9/466 ,  G06F11/1004 ,  G06F12/0806 ,  G06F12/0808 ,  G06F12/0813 ,  G06F12/0815 ,  G06F12/0831 ,  G06F12/0833 ,  G06F13/4022 ,  G06F13/4068 ,  G06F13/4221 ,  G06F13/4282 ,  G06F13/4286 ,  G06F13/4291 ,  G06F2212/1016 ,  G06F2212/2542 ,  G06F2212/622 ,  H04L9/0662 ,  H04L12/4641 ,  H04L45/74 ,  H04L49/15 ,  Y02D10/13 ,  Y02D10/14 ,  Y02D10/151 ,  Y02D10/40 ,  Y02D10/44 ,  Y02D30/30

Abstract: Re-initialization of a link can take place without termination of the link, where the link includes, a transmitter and a receiver are to be coupled to each lane in the number of lanes, and re-initialization of the link is to include transmission of a pre-defined sequence on each of the lanes.