Multispeed communications device
AssigneeMarvell International Ltd.
InventorsWilliam Lo, Xiaopeng Chen
Life of this patent
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Abstract
A physical layer device comprises a mode selector that selects a mode. A clock selects a clock frequency from T clock frequencies based on the mode. A converter module selects one of N mapping functions based on the mode and converts an n-bit input to an m-bit output based on the selected one of the N mapping functions. A scrambler module scrambles the m-bit output or passes the m-bit output unchanged based on the mode. An encoding module modulates the m-bit output based on the selected clock frequency and one of M modulation modes selected based on the mode, where T, n, m, N and M are integers greater than one and n is not equal to m.
Claims24
A physical layer device, comprising:
- a mode selector that selects a mode;
- a clock that selects a clock frequency from T clock frequencies based on said mode;
- a converter module that selects one of N mapping functions based on said mode and that converts an n-bit input to an m-bit output based on said selected one of said N mapping functions;
- a scrambler module that scrambles said m-bit output or passes said m-bit output unchanged based on said mode;
- and
- an encoding module that modulates said m-bit output based on said selected clock frequency and one of M modulation modes selected based on said mode;
- where T, n, m, N and M are integers greater than one and n is not equal to m.
A method comprising:
- selecting a mode;
- selecting a clock frequency from T clock frequencies based on said mode;
- selecting one of N mapping functions based on said mode;
- converting an n-bit input to an m-bit output using said selected one of said N mapping functions;
- scrambling said m-bit output or passing said m-bit output unchanged based on said mode;
- and
- modulating said m-bit output based on said selected clock frequency and one of M modulation modes selected based on said mode,
- where T, n, m, N and M are integers greater than one and n is not equal to m.
A physical layer device, comprising:
- mode selecting means for selecting a mode;
- clock means for generating a selected clock frequency from T clock frequencies selected based on said mode;
- converter means for selecting one of N mapping functions based on said mode and for converting an n-bit input to an m-bit output based on said selected one of said N mapping functions;
- scrambling means for scrambling said m-bit output or for passing said m-bit output unchanged based on said mode;
- and
- encoding means for modulating said m-bit output based said selected clock frequency and on one of M modulation modes selected based on said mode,
- where T, n, m, N and M are integers greater than one and n is not equal to m.
Dependencies are inferred from the claim text.