公开(公告)号：US20130272360A1

公开(公告)日：2013-10-17

申请号：US13915879

申请日：2013-06-12

Applicant: Rambus Inc.

Inventor： Jared Zerbe ,  Pak Shing Chau ,  William Franklin Stonecypher

IPC: H04B17/00

CPC classification number: H04L1/244 ,  G01R31/31703 ,  G01R31/31713 ,  G01R31/31716 ,  G01R31/31717 ,  G01R31/3183 ,  G01R31/31855 ,  G01R31/318577 ,  G01R31/3187 ,  G06F11/221 ,  G06F11/26 ,  G06F13/423 ,  G11C29/02 ,  G11C29/022 ,  G11C29/025 ,  G11C29/40 ,  H04B1/04 ,  H04B1/16 ,  H04B3/32 ,  H04B17/0085 ,  H04L1/0001 ,  H04L1/242 ,  H04L1/243 ,  H04L5/1438 ,  H04L25/03885

Abstract: A method and apparatus for evaluating and optimizing a signaling system is described. A pattern of test information is generated in a transmit circuit of the system and is transmitted to a receive circuit. A similar pattern of information is generated in the receive circuit and used as a reference. The receive circuit compares the patterns. Any differences between the patterns are observable. In one embodiment, a linear feedback shift register (LFSR) is implemented to produce patterns. An embodiment of the present disclosure may be practiced with various types of signaling systems, including those with single-ended signals and those with differential signals. An embodiment of the present disclosure may be applied to systems communicating a single bit of information on a single conductor at a given time and to systems communicating multiple bits of information on a single conductor simultaneously.