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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?
- ESP32 GPIO [0] number 2 pin is reserved
I am building a custom ESP32 board to send sensor data via firebase But when I try to program the WiFi, I got this error E (111) phy_comm: gpio[0] number: 2 is
- ethernet - What is the difference between the PHY sublayers PCS, PMA . . .
What is the difference between the PHY sublayers PCS, PMA and PMD? Ask Question Asked 8 months ago Modified 8 months ago
- Difference between USB and ULPI - Electrical Engineering Stack Exchange
What is the difference between USB and ULPI? I know they are closely related, but how they are related is not clear to me First time I came to know when I was looking at this board (See at the bot
- what is the difference between PHY and MAC chip
A PHY chip or layer converts data between a "clean" clocked digital form which is only suitable for very-short-distance (i e inches) communication, and an analogue form which is suitable for longer range transmission It has no particular clue as to what any of the bits "mean", nor how they should be interpreted or assembled The MAC chip or layer receives bits from the PHY, detects packet
- Understanding 100Base-T1 PHY: 4B3B encoding and timing
The PHY receive data path must recover the clock of the transmitter and use the elastic buffer to allow transferring received data to CPU with local clocks Unless the CPU supports MII and thus can use the recovered receive clock directly
- ethernet - PHY to PHY connection (KSZ9477S and DP83849IF) - Electrical . . .
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 connection and it was 100 Frames per second loss
- 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
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