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US 2014/0211816 A1Published application
System and a method for identifying a point in time of receipt of a data packet
AssigneeNapatech A/S
InventorPeter Ekner
Life of this patent
Estimating the term…
Abstract
A de-serializer, such as forming part of a SERDES, in which a point in time of receipt, on the serial data path, of receipt of a particular part of a data packet, such as an SOF, is determined from when that part is output on the parallel data path from knowledge of the clock controlling the parallel data path as well as which of the parallel lanes the part is output on.
Claims10
A system for identifying a point in time of receipt of a data packet having a redetermined part, the system comprising:
- a de-serializer for:
- receiving serial data from a serial data path,
- deriving a first clock signal with a first frequency from the serial data path and
- deriving a second clock signal with a second frequency, the second frequency being the first frequency divided by a predetermined integer,
- outputting parallel data to a parallel data bus having a predetermined number of parallel data paths, the parallel data relating to the serial data, and the parallel data being output in accordance with the second clock signal,
- an identifier adapted to identify one of the parallel data paths in, which at least a portion of the predetermined part is output,
- a timing device adapted to estimate the point in time from the identified one of the parallel data paths and the second clock signal.
4 more elements
A method of identifying a point in time of receipt of a data packet having a predetermined part, the method comprising:
- receiving serial data from a serial data path,
- deriving a first clock signal with a first frequency from the serial data path and
- deriving a second clock signal with a second frequency, the second frequency being the first frequency divided by a predetermined integer,
- outputting parallel data to a parallel data bus having a predetermined number of parallel data paths, the parallel data relating to the serial data, and the parallel data being output in accordance with the second clock signal,
- identifying one of the parallel data paths in which at least a portion of the predetermined part is output, and
- estimating the point in time from the identified one of the parallel data paths and the second clock signal.
3 more elements
Dependencies are inferred from the claim text.