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REPLACEMENT PHYSICAL LAYER (PHY) FOR LOW-SPEED PERIPHERAL COMPONENT INTERCONNECT (PCI) EXPRESS (PCIe) SYSTEMS
REPLACEMENT PHYSICAL LAYER (PHY) FOR LOW-SPEED PERIPHERAL COMPONENT INTERCONNECT (PCI) EXPRESS (PCIe) SYSTEMS
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机译:低速外围组件互连(PCI)Express(PCIe)系统的替换物理层(PHY)
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摘要
A replacement physical layer (PHY) for low-speed Peripheral Component Interconnect (PCI) Express (PCIe) systems is disclosed. In one aspect, an analog PHY of a conventional PCIe system is replaced with a digital PHY. The digital PHY is coupled to a media access control (MAC) logic by a PHY interface for PCIe (PIPE) directly. In further exemplary aspects, the digital PHY may be a complementary metal oxide semiconductor (CMOS) PHY that includes a serializer and a deserializer. Replacing the analog PHY with the digital PHY allows entry and exit from low-power modes to occur much quicker, resulting in substantial power savings and reduced latency. Because the digital PHY is operable with low-speed communication, the digital PHY can maintain sufficient bandwidth that communication is not unnecessarily impacted by digital logic of the digital PHY.
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