Issue in reading the MAX3421E control register

Dec 06, 2008 3 Replies
K

Hi Folks,



I have interfaced MAX3421E USB controller with FUjitsu Microcontroller for my application.


I can able to write a control register(example IOPINS1 register R20).And I confirmed the data written into the control register by telltales(LEDs) connected with the GPOUT Pins.


The issue is ,i could not read the same register or any other register of MAX3421E.


Already I confirmed my SPI write and read functions that is working fine.



If anyone already worked in MAX3421E....please help me out..Folks



Thanks


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A

kalam

Can you post the code that you are using to read a MAX3421E's register?

You should: Set the CS line Write the register address Read the register contents Clear the CS line

Andrew

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H

Well, what else happened, then?

I strongly doubt you can actually have "confirmed" something "is working fine" that you couldn't get to work, according to your own sentence above.

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U

of

fine.

above.

TRY studying the APPLICATION NOTE 3936 The Maxim USB Laboratory

you can find the AN on the maxim website, it might help..

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