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How to design a USB 2.0 PHY ?

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hung_wai_ming@hotmail.com

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Anyone has some circuit references that can guide me thru the design
of USB2.0 PHY including Tx, Rx, CDR, PLL and logic RTL?
 

usb2 phy design

U can search the UTMI & USB2.0 spec. They can give u some reference.

BTW, just u one? If u have not enough analog & digital experience, I think it is very difficult to design an USB2.0 PHY.
 

philips usb2.0 phy

You must understand the spec of USB2.0 if will start to this project.
I think it is difficult to understand the spec may be the analog circuit is the second.
 

usb1.1 usb2.0 eye pattern

Why don't you use off the shelf IC? There are a lot of USB controller that is inexpensive and you can come up with a schematic in a few hours.

If you have to implement in FPGa, you still need a external pll, transceiver, ... and a lot of stuffs.
 

usb2.0 phy design

USB 2.0 PHY

receiver -> use data recovery circuit , have 2 type solution ,
1 is use PLL 480M * N and lock it
2 use semi digital use multi phase 480M clock latch signal

2 is easy implemant

transmit is easy , you should only send 480M bit data 17.76ma
and use Resistor =47Ohm for impedance match

but you should know USB2 have eye pattern issue , if your clock jitter is large
eye pattern will fail ..


UTMI is PHY digital interface
 

usb phy site:edaboard.com

Yes

cy7c68013

Bye
 

USB2.0 PHY design

I JUST USE USB1.1
 

USB2.0 PHY design

there are many IP availible,
include the PLL(480M), Tx, Rx, NRZ,INRZ, UTMI(8b/16b),
and It is more much about the chip , cypress, philips, Hyun, ....
 

Re: USB2.0 PHY design

Are there some free papers or thesis discuss on this topic can be download?
 

Re: USB2.0 PHY design

usb2.0 phy
design is not easy
you should know RF high speed digital
and basic analog
 

Re: USB2.0 PHY design

I am doing this, researching some resources about it.
Who can mails me some?
 

Re: USB2.0 PHY design

Please look up the NXP and SMSC web site for USB2 or OTG PHY devices and informations

:F
 

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