公开(公告)号：US11750325B2

公开(公告)日：2023-09-05

申请号：US16933449

申请日：2020-07-20

Applicant: Apple Inc.

Inventor： Jafar Savoj ,  Praveen R. Singh ,  Brian S. Leibowitz ,  Emerson S. Fang

IPC: H04L1/02 ,  H03K19/0175 ,  H04L25/02 ,  H04L25/06 ,  H04L25/03

CPC classification number: H04L1/02 ,  H03K19/0175 ,  H04L25/0272 ,  H04L25/062 ,  H04L2025/03363

Abstract: A system and method for efficiently transporting data in a computing system are contemplated. In various embodiments, a computing system includes a source, a destination and multiple lanes between them for transporting data. Multiple receivers in the destination has a respective termination resistor connected to a single integrating capacitor, which provides a reference voltage to the multiple receivers. The receivers reconstruct the received data by comparing the corresponding input signals to the reference voltage. The source includes a table storing code words. The source maps a generated data word to a code word, which is sent to the destination. The destination maps the received code word to the data word. The values of the code words are selected to maintain a nearly same number of Boolean ones on the multiple lanes over time as a number of Boolean zeroes.

公开(公告)号：US20200235856A1

公开(公告)日：2020-07-23

申请号：US16253100

申请日：2019-01-21

Applicant: Apple Inc.

Inventor： Jafar Savoj ,  Praveen R. Singh ,  Brian S. Leibowitz ,  Emerson S. Fang

IPC: H04L1/02 ,  H03K19/0175

Abstract: A system and method for efficiently transporting data in a computing system are contemplated. In various embodiments, a computing system includes a source, a destination and multiple lanes between them for transporting data. Multiple receivers in the destination has a respective termination resistor connected to a single integrating capacitor, which provides a reference voltage to the multiple receivers. The receivers reconstruct the received data by comparing the corresponding input signals to the reference voltage. The source includes a table storing code words. The source maps a generated data word to a code word, which is sent to the destination. The destination maps the received code word to the data word. The values of the code words are selected to maintain a nearly same number of Boolean ones on the multiple lanes over time as a number of Boolean zeroes.

公开(公告)号：US20220077679A1

公开(公告)日：2022-03-10

申请号：US17014894

申请日：2020-09-08

Applicant: Apple Inc.

Inventor： Farzan Farbiz ,  Jaeduk Han ,  Praveen R. Singh

IPC: H02H9/04

Abstract: An ESD protection circuit is disclosed. The ESD protection circuit is coupled between a first node and a second node that is coupled to an input of a functional circuit. A first protection circuit is coupled to the first node. The circuit further includes a first path and a second path. The first path includes a second protection circuit that is coupled to the second node, and is AC coupled to the first node. A second circuit path includes a third protection circuit, a resistor coupled between the third protection circuit and the first node, and a switch having a first terminal coupled to the resistor and the third protection circuit. A shunt circuit includes a transistor having a gate terminal coupled to the second terminal of the switch. The transistor, when activated, shunts current from the second node to ground.

公开(公告)号：US11322935B2

公开(公告)日：2022-05-03

申请号：US17014894

申请日：2020-09-08

Applicant: Apple Inc.

Inventor： Farzan Farbiz ,  Jaeduk Han ,  Praveen R. Singh

IPC: H02H9/04

Abstract: An ESD protection circuit is disclosed. The ESD protection circuit is coupled between a first node and a second node that is coupled to an input of a functional circuit. A first protection circuit is coupled to the first node. The circuit further includes a first path and a second path. The first path includes a second protection circuit that is coupled to the second node, and is AC coupled to the first node. A second circuit path includes a third protection circuit, a resistor coupled between the third protection circuit and the first node, and a switch having a first terminal coupled to the resistor and the third protection circuit. A shunt circuit includes a transistor having a gate terminal coupled to the second terminal of the switch. The transistor, when activated, shunts current from the second node to ground.

公开(公告)号：US20210099252A1

公开(公告)日：2021-04-01

申请号：US16933449

申请日：2020-07-20

Applicant: Apple Inc.

Inventor： Jafar Savoj ,  Praveen R. Singh ,  Brian S. Leibowitz ,  Emerson S. Fang

IPC: H04L1/02 ,  H03K19/0175

Abstract: A system and method for efficiently transporting data in a computing system are contemplated. In various embodiments, a computing system includes a source, a destination and multiple lanes between them for transporting data. Multiple receivers in the destination has a respective termination resistor connected to a single integrating capacitor, which provides a reference voltage to the multiple receivers. The receivers reconstruct the received data by comparing the corresponding input signals to the reference voltage. The source includes a table storing code words. The source maps a generated data word to a code word, which is sent to the destination. The destination maps the received code word to the data word. The values of the code words are selected to maintain a nearly same number of Boolean ones on the multiple lanes over time as a number of Boolean zeroes.

公开(公告)号：US10756849B2

公开(公告)日：2020-08-25

申请号：US16253100

申请日：2019-01-21

Applicant: Apple Inc.

Inventor： Jafar Savoj ,  Praveen R. Singh ,  Brian S. Leibowitz ,  Emerson S. Fang

IPC: H04L1/02 ,  H03K19/0175 ,  H04L25/02 ,  H04L25/06 ,  H04L25/03

Abstract: A system and method for efficiently transporting data in a computing system are contemplated. In various embodiments, a computing system includes a source, a destination and multiple lanes between them for transporting data. Multiple receivers in the destination has a respective termination resistor connected to a single integrating capacitor, which provides a reference voltage to the multiple receivers. The receivers reconstruct the received data by comparing the corresponding input signals to the reference voltage. The source includes a table storing code words. The source maps a generated data word to a code word, which is sent to the destination. The destination maps the received code word to the data word. The values of the code words are selected to maintain a nearly same number of Boolean ones on the multiple lanes over time as a number of Boolean zeroes.