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magnifies    音标拼音: [m'ægnəf,ɑɪz]

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  • What does PHY refer to? - Electrical Engineering Stack Exchange
    a PHY is a type of Ethernet physical layer (eg 100BASE-TX, 10BASE-T) a PHY is an Ethernet transceiver IC (eg an IC that converts 100BASE-TX to MII RMII) a PHY is a physical layer device (more than just the transceiver IC) Is PHY ambiguous and can refer to all of these or did I understand something wrong?
  • PHY to PHY connection (KSZ9477S and DP83849IF)
    I want to connect two phys on pcb through AC coupling (max path 150 mm), one PHY is KSZ9477S embedded PHY, other is DP83849IF PHY The schematic is attached At first the I made a direct connectio
  • Do all PHY Ethernet chips have a hard-coded MAC address?
    MAC addresses have nothing to do with the PHY layer These are relevant in the MAC layer, which is of course why they are called "MAC" addresses in the first place Every ethernet MAC is supposed to have a globally unique 48 bit address
  • How to design PCB layout for Ethernet to SPI Phy correctly?
    Use a continuous ground plane beneath all diff pairs and underneath the Ethernet to SPI converter You don't have to place the Phy close to the magnetics, but you'll get better results It's really when you do 100BASE-T or 1000BASE-T when you have to worry about length matching of the diff pairs Also keep bypass capacitors close to the PHY chip
  • Connecting a PHY to another PHY on a same board
    Generally, if I'm connecting a PHY to RJ45 connector, I would add center tap capacitors and Bob-Smith termination like below But if I am connecting a PHY to another PHY, do I still need the Bob-Smith termination? Or can I just have center tap capacitors on both sides like below? Both PHYs share same GND but are powered by different rails
  • microcontroller - Does USB FS PHY USB HS ULPI imply double usb . . .
    Does that mean there is one USB controller, connected to a FS PHY and with the capabilities ( pins, ULPI) to connect to a HS PHY (one or the other), or does that mean there's one standalone controller+PHY couple capped at full speed and something else entirely that would manage an external PHY, which would mean double USB capabilities when
  • How to define PHY mode and MAC mode between back to back switches
    When connecting these devices in back to back mode with RGMII interface between then, I need to define which switch is PHY and which would be MAC right? In that case, can someone tell me how to do it? In the datasheet, mentioned in page 12, I don't see a strap option that can help to identify this switch as PHY or MAC
  • Voltage mode Ethernet PHY and Current mode Ethernet PHY
    2 In the Ethernet PHY, we have two types Voltage mode PHY and current mode PHY Can anyone tell me the reason why the center taps of magnetics are shorted in case of connection to a current mode PHY whereas, the center taps of magnetics are individually decoupled in case of voltage-mode PHY? What is the principle behind this?
  • Why do Ethernet PHY magnetics have a center tap?
    I've a question with the Ethernet PHY connection to the RJ45 connector With either discrete or integrated magnetics, either with voltage mode PHY or current mode PHY, what is the purpose of the ce
  • what is the difference between PHY and MAC chip
    what is the difference between PHY and MAC chip Ask Question Asked 12 years, 11 months ago Modified 12 years, 11 months ago





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