Jay D. Harker - Denver CO, US Marek J. Marasch - Longmont CO, US Jeff S. Brown - Fort Collins CO, US Mark F. Turner - Longmont CO, US Carol A. Anderson - Mendota Heights MN, US Jay T. Daugherty - Longmont CO, US
Assignee:
LSI CORPORATION - Milpitas CA
International Classification:
H03K 19/003 G06F 17/50
US Classification:
326 21, 716115
Abstract:
A method of designing an integrated circuit, integrated circuits using different drive strengths and a signal integrity monitor are provide herein. In one embodiment, the signal integrity monitor includes: (1) a signal interface configured to receive a signal from a parallel data bus for transmission over a plurality of signal paths and (2) a victim signal identifier configured to dynamically determine a potential victim signal path of the plurality of signal paths.
Steve Bounds - Broomfield CO, US Jay Harker - Broomfield CO, US Galen Kerber - Lafayette CO, US
International Classification:
G11B 5/09
US Classification:
360051000
Abstract:
A method, circuit and drive for improving clock recovery in clock/data signals are provided. A timing reference is provided to a locking loop circuit, such as a PLL. The timing reference is updated based on an expectation of a frequency of a clock being recovered. A system clock tracked to each clock being recovered is outputted. A current frequency of each system clock is approximated, and the expectation updated based on the approximated current frequency of one or more of the system clocks. If the data stream includes data separated into a series of blocks, the update may be made after an end of a block and before a beginning of a succeeding block. The approximation may be made periodically and/or numerous times for each block.
Dawn Harker (1980-1983), Danielle Miller (1991-1996), Lisa Gonzales (1991-1998), Michele Macron (1975-1978), Diane McDonnell (1982-1987), Jay Harker (1980-1983)