USB Host Implementation via device hardware

Sep 27, 2009 8 Replies
S

Hi all



I am currently using LPC2138 for my designs.



now I got a similar controller LPC2141 with the additional feature of USB device controller.


Now I want to know is there any way to implement a USB Host firmware by using a USB device hardware.



If yes please let me know the method.



I want to interface a USB based CDMA modem with the controller, so can I interface the modem with a USB device controller or I have to go for a USB host controller.


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F

No. You can use an external host controller though.

Regards, Richard. + http://www.FreeRTOS.org Designed for Microcontrollers. More than 7000 downloads per month. + http://www.SafeRTOS.com Certified by TÜV as meeting the requirements for safety related systems
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S

USB

Can you tell me any external HOST controller for USB ? so I can interface the USB with my controller using some other protocol...

Regards, Saurabh

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B

MAX3401 or something. Attach over SPI (device is slave)

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L

Why not use LPC2387 or a similar device that has USB OTG on-chip?

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S

by

systems

protocol...

Sorry Sir But I am not able to find a part named MAX3401 so can you suggest something else for USB HOST converter.

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M

What I found were these (MAX1450?):

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Mel.

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C

At first reading that does not appear relevant. That chip looks to be something that you can drop into a device with a wimpy USB and SD card interface, where its normally transparent, but when you switch it into a special mode than an external USB host can get higher speed access to the SD card.

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