What is the difference between PHY and Switch chips?
On the hardware chip, what is the difference between the two? How to distinguish directly?
Whether PHY input corresponding output all the way, all the way and the Switch is input multiple output all the way??????

CodePudding user response:

Very clear

CodePudding user response:

1 floor of the figure is very good, description is very clear
Then add that early SWITCH chips do not contain PHY
For example: 485 interface, the CPU of TXD, RXD to pick up a level conversion/transceiver control conversion chips, such as MAX485,
Can understand the PHY into a more complex conversion chip, and the status of the MAX485,
485 is 232 half duplex on root, TXD, RXD, sending and receiving control line, on the software programming is general in 232 to deal with,
Ethernet is more complex, from inside the chip, the software driver for MAC interface directly,