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US 2006/0187966 A1Published application
Distributed multiple-channel alignment scheme
AssigneeLattice Semiconductor Corporation
InventorsWai-Bor Leung, Barry Britton, Akila Subramaniam
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Abstract
A channel-alignment circuit has a controller and a plurality of channel-alignment blocks. Each channel-alignment block synchronizes two or more channels. The controller coordinates the synchronization of channels by the blocks such that (i) channels in each of one or more groups of two or more blocks are synchronized, and (ii) each group of blocks is synchronized independently of any other group.
Claims23
A channel-alignment circuit comprising:
- a plurality of channel-alignment blocks, each adapted to synchronize two or more channels;
- and
- a controller adapted to coordinate the synchronization of channels by the blocks such that:
- channels in each of one or more groups of two or more blocks are synchronized;
- and
- each group of blocks is synchronized independently of any other group.
3 more elements
An IC chip having a channel-alignment circuit comprising:
- a plurality of channel-alignment blocks, each adapted to synchronize two or more channels;
- and
- a controller adapted to coordinate the synchronization of channels by the blocks such that:
- channels in each of one or more groups of two or more blocks are synchronized;
- and
- each group of blocks is synchronized independently of any other group.
3 more elements
A channel-alignment circuit comprising:
- a plurality of channel-alignment blocks, each adapted to synchronize two or more channels;
- and
- a controller adapted to coordinate the synchronization of channels by the channel-alignment blocks such that the channel-alignment circuit supports two or more operating modes, wherein:
- in a first operating mode, the channels in each of M groups of channels are synchronized, wherein M≧1 and each group has a specified maximum number of channels;
- in a second operating mode, the channels in each of N groups of channels are synchronized, wherein N≧1 and each group has a specified maximum number of channels;
- at least one of (i) M does not equal N and (ii) the set of specified maximum numbers of channels in the first operating mode differs from the set of specified maximum numbers of channels in the second operating mode;
- and
- at least a first block is used in each of the first and second operating modes.
5 more elements
Dependencies are inferred from the claim text.