公开(公告)号：US10003456B2

公开(公告)日：2018-06-19

申请号：US15430134

申请日：2017-02-10

Applicant: QUALCOMM Incorporated

Inventor： Jin-Sheng Wang ,  Lior Amarilio

IPC: H04L7/04 ,  G06F13/42 ,  H04L5/16 ,  H04L25/493 ,  H04R3/00

CPC classification number: H04L7/04 ,  G06F13/4291 ,  H04L5/16 ,  H04L25/493 ,  H04L27/142 ,  H04R3/00

Abstract: System, methods and apparatus are described that improve link turnaround performance in a differentially driven link. A method performed at a first device coupled to a two-wire serial link includes transmitting from the first device first differentially-encoded data to a second device over the two-wire serial link during a first time period, receiving at the first device second differentially-encoded data from the second device over the two-wire serial link during a second time period, and driving by the first device both wires of the two-wire serial link to a common voltage level during a third time period, the third time period spanning a link turnaround period between the first time period and the second time period. Both wires of the two-wire serial link are driven toward the common voltage level by the second device during the third time period.

公开(公告)号：US20170250794A1

公开(公告)日：2017-08-31

申请号：US15430134

申请日：2017-02-10

Applicant: QUALCOMM Incorporated

Inventor： Jin-Sheng Wang ,  Lior Amarilio

IPC: H04L7/04

CPC classification number: H04L7/04 ,  G06F13/4291 ,  H04L5/16 ,  H04L25/493 ,  H04L27/142 ,  H04R3/00

Abstract: System, methods and apparatus are described that improve link turnaround performance in a differentially driven link. A method performed at a first device coupled to a two-wire serial link includes transmitting from the first device first differentially-encoded data to a second device over the two-wire serial link during a first time period, receiving at the first device second differentially-encoded data from the second device over the two-wire serial link during a second time period, and driving by the first device both wires of the two-wire serial link to a common voltage level during a third time period, the third time period spanning a link turnaround period between the first time period and the second time period. Both wires of the two-wire serial link are driven toward the common voltage level by the second device during the third time period.

公开(公告)号：US20170063700A1

公开(公告)日：2017-03-02

申请号：US15226330

申请日：2016-08-02

Applicant: QUALCOMM Incorporated

Inventor： Jin-Sheng Wang ,  Lior Amarilio

IPC: H04L12/825 ,  G01R19/25 ,  G06F13/42 ,  H04L7/033

CPC classification number: H04L47/25 ,  G01R19/2506 ,  G06F13/4282 ,  G06F13/4291 ,  H04L7/033

Abstract: Systems and methods for rate detection for SOUNDWIRE extension (SOUNDWIRE-XL) cables are disclosed. In one aspect, software may be used to initiate a capability exchange between a host device and a slave device over a SOUNDWIRE-XL cable. In a second exemplary aspect, resistors may be associated with data lines in the slave device. Designers may encode rate information into the slave device by using different values for the elements. The host device may then sample the data lanes and determine a rate for the slave device.

Abstract translation: 公开了用于SOUNDWIRE扩展（SOUNDWIRE-XL）电缆的速率检测的系统和方法。 在一个方面，软件可以用于通过SOUNDWIRE-XL电缆发起主机设备和从设备之间的能力交换。 在第二示例性方面，电阻器可以与从设备中的数据线相关联。 设计者可以通过使用元素的不同值来将速率信息编码到从设备中。 然后，主机设备可以对数据通道进行采样，并确定从设备的速率。