公开(公告)号：US10041999B2

公开(公告)日：2018-08-07

申请号：US15411063

申请日：2017-01-20

Applicant: VIA TECHNOLOGIES, INC.

Inventor： Shih-Hao Chen

IPC: G01R31/317 ,  G01R31/3177

CPC classification number: G01R31/31707 ,  G01R31/31716 ,  G01R31/31723 ,  G01R31/31724 ,  G01R31/3177 ,  G01R31/3187

Abstract: A built-in self-test mechanism for an interface chip. During a loopback test procedure, a transmission terminal of the interface chip is coupled back to the interface chip by a reception terminal of the interface chip and a loopback test circuit within the interface chip generates a test sequence which includes a synchronization section and a section of repeated test code. The test sequence is scrambled by a scrambler and then is transmitted via the transmission terminal and looped back to the reception terminal. The signal looped back to the reception terminal is processed by an equalizer and descrambled by a descrambler to be further checked by the loopback test circuit for determining whether the interface chip is functioning normally. The dynamically-changed keys used in the scrambler and the descrambler are synchronized according to the synchronization section. The equalizer is optimized by the scrambled section of repeated test code.

公开(公告)号：US09350407B1

公开(公告)日：2016-05-24

申请号：US14837412

申请日：2015-08-27

Applicant: VIA TECHNOLOGIES, INC.

Inventor： Shih-Hao Chen ,  Chun-Heng Lin

IPC: H04B1/3816 ,  H04L29/08

CPC classification number: H04L69/323 ,  H04L69/324

Abstract: An interface chip capable of accurate link detection. The interface chip mounted on a first electronic device has a link layer and a physical layer. The link layer outputs data to be transformed and transmitted to a second electronic device by the physical layer. The data transmitted from the second electronic device is received and transformed by the physical layer and then conveyed to the link layer. The link layer includes a state machine, which performs a state modification on the first electronic device to rescue the second electronic device from a trapped state for confirming a link between the first and second electronic devices, wherein data output by the link layer and transformed and transmitted to the second electronic device by the physical layer is changed according to the state modification.

Abstract translation: 一种能够精确链接检测的接口芯片。 安装在第一电子设备上的接口芯片具有链路层和物理层。 链路层通过物理层输出要变换并发送到第二电子设备的数据。 从第二电子设备发送的数据被物理层接收和变换，然后被传送到链路层。 链路层包括状态机，其在第一电子设备上执行状态修改以将第二电子设备从用于确认第一和第二电子设备之间的链路的被捕获状态拯救，其中由链路层输出的数据被转换和 通过物理层传送到第二电子设备根据状态修改而改变。