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公开(公告)号:US20210117350A1
公开(公告)日:2021-04-22
申请号:US17134242
申请日:2020-12-25
申请人: Intel Corporation
发明人: 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分类号: G06F13/22 , H04L12/933 , 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
摘要: 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.
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公开(公告)号:US10599602B2
公开(公告)日:2020-03-24
申请号:US16446996
申请日:2019-06-20
申请人: INTEL CORPORATION
发明人: Venkatraman Iyer , William R. Halleck , Rahul R. Shah , Eric Lee
摘要: Systems, methods, and apparatuses including a Physical layer (PHY) block coupled to a Media Access Control layer (MAC) block via a PHY/MAC interface. Each of the PHY and MAC blocks include a plurality of Physical Interface for PCI Express (PIPE) registers. The PHY/MAC interface includes a low pin count PIPE interface comprising a small set of wires coupled between the PHY block and the MAC block. The MAC block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of PHY PIPE registers, and the PHY block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of MAC PIPE registers. The PHY block may also be selectively configurable to implement a PIPE architecture to operate in a PIPE mode and a serialization and deserialization (SERDES) architecture to operate in a SERDES mode.
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公开(公告)号:US20180181525A1
公开(公告)日:2018-06-28
申请号:US15390648
申请日:2016-12-26
申请人: Intel Corporation
发明人: Venkatraman Iyer , William R. Halleck , Rahul R. Shah , Eric Lee
CPC分类号: G06F13/4068 , G06F13/1673 , G06F13/1689 , G06F13/382 , G06F13/385 , G06F13/4282 , G06F2213/0026
摘要: Systems, methods, and apparatuses involve a PHY coupled to a MAC. The PHY can include a drift buffer coupled to an output of a receiver and a bypass branch coupled to the output of the receiver. The PHY includes a clocking multiplexer that includes a first clock input coupled to a recovered clock of the PHY and a second clock input coupled to a p-clock of the MAC; and a clock output configured to output one of the recovered clock or the p-clock based on a selection input value. The PHY includes a bypass multiplexer that includes a first data input coupled to an output of a drift buffer and a second data input coupled to the bypass branch; and a data output configured to output one of the output of the drift buffer or data from the bypass branch based on the section input value of the clocking multiplexer.
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公开(公告)号:US20180095923A1
公开(公告)日:2018-04-05
申请号:US15283309
申请日:2016-10-01
申请人: Intel Corporation
CPC分类号: G06F13/4068 , G06F13/36 , G06F13/4022 , G06F13/4027 , G06F13/4265 , G11C27/04
摘要: An interface adapter to identify a first ready signal from a first link layer-to-physical layer (LL-PHY) interface of a first communication protocol indicating readiness of a physical layer of the first protocol to accept link layer data. The interface adapter generates a second ready signal compatible with a second LL-PHY interface of a second communication protocol to cause link layer data to be sent from a link layer of the second communication protocol according to a predefined delay. A third ready signal is generated compatible with the first LL-PHY interface to indicate to the physical layer of the first communication protocol that the link layer data is to be sent. The interface adapter uses a shift register to cause the link layer data to be passed to the physical layer according to the predefined delay.
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公开(公告)号:US20210182231A1
公开(公告)日:2021-06-17
申请号:US17184737
申请日:2021-02-25
申请人: Intel Corporation
发明人: Venkatraman Iyer , William R. Halleck , Rahul R. Shah , Eric Lee
摘要: Systems, methods, and apparatuses including a Physical layer (PHY) block coupled to a Media Access Control layer (MAC) block via a PHY/MAC interface. Each of the PHY and MAC blocks include a plurality of Physical Interface for PCI Express (PIPE) registers. The PHY/MAC interface includes a low pin count PIPE interface comprising a small set of wires coupled between the PHY block and the MAC block. The MAC block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of PHY PIPE registers, and the PHY block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of MAC PIPE registers. The PHY block may also be selectively configurable to implement a PIPE architecture to operate in a PIPE mode and a serialization and deserialization (SERDES) architecture to operate in a SERDES mode.
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公开(公告)号:US10963415B2
公开(公告)日:2021-03-30
申请号:US16802209
申请日:2020-02-26
申请人: INTEL CORPORATION
发明人: Venkatraman Iyer , William R. Halleck , Rahul R. Shah , Eric Lee
摘要: Systems, methods, and apparatuses including a Physical layer (PHY) block coupled to a Media Access Control layer (MAC) block via a PHY/MAC interface. Each of the PHY and MAC blocks include a plurality of Physical Interface for PCI Express (PIPE) registers. The PHY/MAC interface includes a low pin count PIPE interface comprising a small set of wires coupled between the PHY block and the MAC block. The MAC block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of PHY PIPE registers, and the PHY block is configured to multiplex command, address, and data over the low pin count PIPE interface to access the plurality of MAC PIPE registers. The PHY block may also be selectively configurable to implement a PIPE architecture to operate in a PIPE mode and a serialization and deserialization (SERDES) architecture to operate in a SERDES mode.
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公开(公告)号:US10931329B2
公开(公告)日:2021-02-23
申请号:US15394278
申请日:2016-12-29
申请人: Intel Corporation
IPC分类号: H04L12/407 , H04B3/36 , H04L12/933 , H04L12/803 , G06F13/40
摘要: 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.
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公开(公告)号:US10248591B2
公开(公告)日:2019-04-02
申请号:US15393153
申请日:2016-12-28
申请人: Intel Corporation
发明人: 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分类号: 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
摘要: 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.
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公开(公告)号:US09779053B2
公开(公告)日:2017-10-03
申请号:US14580918
申请日:2014-12-23
申请人: Intel Corporation
发明人: Debendra Das Sharma , Daniel S. Froelich , Venkatraman Iyer , Michelle C. Jen , Rahul R. Shah , Eric M. Lee
CPC分类号: G06F13/4068 , G06F13/1642 , G06F13/1673 , G06F13/385 , G06F13/4282
摘要: An apparatus that includes a physical interface for a serial interconnect is provided. The physical interface includes a buffer that is selectable to function as a drift buffer or an elastic buffer by a voltage level on a buffer control line. The physical interface also includes encoding logic that can be enabled or disabled by a voltage level on a logic control line. Further, the physical interface also includes and an ordered set generator that can be enabled or disabled by a voltage level on a communications control line.
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公开(公告)号:US20170109300A1
公开(公告)日:2017-04-20
申请号:US15393631
申请日:2016-12-29
申请人: Intel Corporation
CPC分类号: G06F13/4027 , G06F13/124 , G06F13/1678 , G06F13/4282 , Y02D10/14 , Y02D10/151
摘要: An exit pattern is sent to initiate exit from a partial width state, where only a portion of the available lanes of a link are used to transmit data and the remaining lanes are idle. The exit pattern is sent on the idle lanes, the exit pattern including an electrical ordered set (EOS), one or more fast training sequences (FTS), a start of data sequence (SDS), and a partial fast training sequence (FTSp). The SDS includes a byte number field to indicate a number of a bytes measured from a previous control interval of the link, and an end of the SDS is sent to coincide with a clean flit boundary on the active lanes. The partial width state is exited based on the exit pattern and data is sent on all available lanes following the exit from the partial width state.
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