Deskew apparatus and method for peripheral component interconnect express
AssigneeElectronics and Telecommunications Research Institute
InventorYong-Seok Choi
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Abstract
Disclosed herein are a deskew apparatus and method for Peripheral Component Interconnect (PCI) Express for compensating for a skew. The deskew apparatus includes a lane data input unit, a lane data alignment unit, and a lane data detection unit. The lane data input unit receives 18-bit data from each of lanes of the PCI Express. The lane data alignment unit aligns the 18-bit data using a COM symbol. The lane data detection unit detects a change in a state of alignment of the 18-bit data attributable to deletion or addition of an SKP symbol when the 18-bit data is aligned, and to perform synchronization between the lanes.
Claims16
A deskew apparatus for Peripheral Component Interconnect (PCI) Express for compensating for a skew, the deskew apparatus comprising:
- a lane data input unit configured to receive 18-bit data from each of lanes of the PCI Express;
- a lane data alignment unit configured to align the 18-bit data using a COM symbol;
- and
- a lane data detection unit configured to detect a change in a state of alignment of the 18-bit data attributable to deletion or addition of an SKP symbol when the 18-bit data is aligned, instead of by detecting the COM symbol, and to perform synchronization between the lanes.
A method of compensating for deskew of Peripheral Component Interconnect (PCI) Express, the method comprising:
- receiving, by a lane data input unit, 18-bit data from each of lanes of the PCI Express;
- aligning, by a lane data alignment unit, the 18-bit data using a COM symbol;
- and
- detecting, by a lane data detection unit, a change in a state of alignment of the 18-bit data attributable to deletion or addition of an SKP symbol when the 18-bit data is aligned, instead of by detecting the COM symbol, and performing, by a lane data detection unit, synchronization between the lanes.
Dependencies are inferred from the claim text.