Abstract:
Embodiments in the disclosure include a multi-protocol transceiver including a configurable arrangement of receive and/or transmit circuitry. An exemplary transceiver can be selectively configured to effectively transmit and/or receive data communications corresponding to a select one of a plurality of high-speed communication protocols. Another more particular embodiment disclosed includes a configurable data path through link-wide Physical Coding Sub-layer ("PCS") circuitry including link-wide clock compensation, encoding/decoding, and scrambling/descrambling circuitry and lane striping/de-striping circuitry; the configurable data path further includes lane-wide circuitry including clock compensation, encoding/decoding, receive block sync, and Physical Medium Access sub-layer ("PMA") circuitry, and further includes bit muxing/de-muxing circuitry coupled to Physical Medium Dependent ("PMD") sub-layer circuitry.
Abstract:
An integrated circuit (IC) is provided. The IC includes a first region having an array of programmable logic cells. The IC also includes a second region incorporated into the IC and in communication with the first region. The second region includes standard logic cells and base cells. In one embodiment, the standard logic cells are assembled or interconnected to accommodate known protocols. The base cells include configurable logic to adapt to modifications to emerging communication protocols, which are supported by the base cells. The second region can be embedded in the first region in one embodiment. In another embodiment, the second region is defined around a perimeter of the first region. The configurable logic may be composed of hybrid logic elements that have metal mask programmable interconnections so that as emerging communication protocols evolve and are modified, the IC can be modified to accommodate to the changes in the protocol. In another embodiment, a generic device can be customized by replacing the original function with a completely new function targeting a specific application space, e.g., replacing the original function such as a PCI Express, used for computing based applications, with 4OG /10OG Ethernet and Interlaken, used in wireline applications. A method of designing an integrated circuit is also provided.
Abstract:
In a programmable logic device, some or all of the parallel interconnect resources (24) are replaced by serial interconnect resources (25) within the device. Some or all of the functional blocks (21, 22, 23) on the device are supplemented with serial interfaces (30) . Although this makes the functional blocks more complex, it allows a significant reduction in the area consumed by interconnect resources. This translates into a significant reduction in device power consumption. The serial interfaces (30) may operate synchronously from a global device clock (such as a PLL) . In some cases, serial interfaces (30) that are provided in the input/output blocks (23) for external signalling can be omitted because the serial interfaces in the functional blocks can take over the external serial interface function as well, although in those cases the serial interfaces in the functional blocks (23) would have to be more complex because they would have to be able to operate asynchronously with external devices .
Abstract:
A programmable logic device ("PLD") includes high speed serial interface ("HSSI") circuitry that can support several high speed serial ("HSS") standards. Examples of the standards that can be supported are XAUI, InfiniBand, 1G Ethernet, FibreChannel, and Serial RapidIO. The HSSI circuitry may be partly programmable to support these various standards. In some cases control may come from the associated PLD core circuitry. Also in some cases some of the interface functions may be performed in the PLD core circuitry.
Abstract:
A serial interface for a programmable logic device can be operated according to various communications protocols and includes both a receiver portion and a transmitter portion. The receiver portion includes at least a word or byte alignment stage, a de-skew stage, a rate compensation or matching stage, a padded protocol decoder stage (e.g., 8B/10B decoder circuitry or 64B/66B decoder circuitry), a byte deserializer stage, a byte reorder stage, and a phase compensation stage. The transmitter portion includes at least a phase compensation stage, a byte deserializer stage, and a padded protocol encoder stage (e.g., an 8B/10B encoder circuitry or 64B/66B encoder circuitry). Each stage may have multiple occurrences of relevant circuitry. Selection circuitry, such as multiplexers, selects the appropriate stages, and circuitry within each stage, for the protocol being used.
Abstract:
A programmable logic device ("PLD") includes high speed serial interface ("HSSI") circuitry that can support several high speed serial ("HSS") standards. Examples of the standards that can be supported are XAUI, InfiniBand, 1G Ethernet, FibreChannel, and Serial RapidIO. The HSSI circuitry may be partly programmable to support these various standards. In some cases control may come from the associated PLD core circuitry. Also in some cases some of the interface functions may be performed in the PLD core circuitry.
Abstract:
PROBLEM TO BE SOLVED: To provide a serial interface capable of responding suitably to a wide range data rate. SOLUTION: A serial interface for a PLD (20) supports a wide range of the data rate by providing the first number of channels (21-24) for supporting the data rate of the first range and the second number of channels (200) for supporting the second range of the data rate. The data rate for the first range is lower than the data rate for the second range. The first number of the channels is larger than the number of the second channels which is preferably one. The number of the first channels in each of the interfaces is suitably four. Each of the channels includes a physical medium connection module (26) and a physically coded sublayer module (25). Each of the high-speed channels for the channels of the second number includes a clock management unit. The low-speed channel of the channel of the first number shares one or more clock management units. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high-speed serial interface offering a wide-range data rate. SOLUTION: This serial interface for the programmable logic device can work according to various communication protocols and includes a receiver part (350) and a transmitter part (370). The receiver part is provided with a word alignment step or a byte alignment step (321), a deskew step (322), a rate compensation step or a rate matching step (323), an embedded protocol decoder step (324), a byte serial-parallel converter step (325), a byte rearrangement step (326), and a phase compensation step (327) at least. The transmitter part includes a phase compensation step (371), a byte parallel/serial converter step (372), and an embedded protocol encoder step (373) at least. Each of the steps may have a plurality of associated circuits. A selection circuit (for example, a multiplexer) selects a proper step and a circuit in each step as to a protocol to be used. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A serial interface for a programmable logic device can be operated according to various communications protocols and includes both a receiver portion and a transmitter portion. The receiver portion includes at least a word or byte alignment stage, a de-skew stage, a rate compensation or matching stage, a padded protocol decoder stage (e.g., 8B/10B decoder circuitry or 64B/66B decoder circuitry), a byte deserializer stage, a byte reorder stage, and a phase compensation stage. The transmitter portion includes at least a phase compensation stage, a byte deserializer stage, and a padded protocol encoder stage (e.g., an 8B/10B encoder circuitry or 64B/66B encoder circuitry). Each stage may have multiple occurrences of relevant circuitry. Selection circuitry, such as multiplexers, selects the appropriate stages, and circuitry within each stage, for the protocol being used.
Abstract:
Phase locked loop circuitry (150) operates digitally, to at least a large extent, to select from a plurality of phase-distributed candidate clock signals (154) the signal that is closest in phase to transitions in another signal (152) such as a clock data recovery ("CDR") signal. The circuitry is constructed and operated to avoid glitches in the output clock signal that might otherwise result from changes in selection of the candidate clock signal.