topic Re: USB HOST to program the NAND Flash using mfgtool in i.MX Processors

USB HOST to program the NAND Flash using mfgtool

Ramtry — Thu, 20 Jun 2013 09:25:19 GMT

Hi,

My firmware application involves transferring of data between pen drive which connected on EVK board USB 1 Host . Currently using MgfTool to flash the program into NAND Flash chip by connecting the usb cable between USB 0 Device of board and PC. Still wonder, is it possible to use both flashing of nand flash chip and pendrive data transfer using one USB channel may be USB0 or USB1 ? For instance, program the NAND flash IC using USB0 and use the same USB0 to my application to interface pendrive.

Thanks,

RAM

Re: USB HOST to program the NAND Flash using mfgtool

Yuri — Mon, 24 Jun 2013 03:26:09 GMT

The MFG tool may use only USB OTG (USB0) of the i.MX28.

There are no tools from Freescale to flash NAND, using USB Host of the i.MX28, sorry.

Next, generally it is possible to write NAND and a sticker, connected to USB Host of i.MX28,

via the MFG, but we do not have an example for USB sticker writing.

Also it is possible to use the i.MX28 USB OTG in both modes (Host and Device),

but - of course - not simultaneously.

Re: USB HOST to program the NAND Flash using mfgtool

Ramtry — Wed, 10 Jul 2013 10:18:52 GMT

Hey Yuri,

Thanks for your post. I am multiplexing the USB channel 0 and 1 with the help of bilateral switch (cd4016). Whenever i want to program then placing the jumper. After programming remove the jumper. Attached the schematic .

thanks

ram

Re: USB HOST to program the NAND Flash using mfgtool

Yuri — Fri, 12 Jul 2013 03:40:34 GMT

I have some doubt regarding frequency parameters of the switch (I am afraid it cannot guarantee 480 MHz passing).
It would be better to use special USB solutions, say as following :

http://www.ti.com/lit/ds/symlink/ts3usb221.pdf

Re: USB HOST to program the NAND Flash using mfgtool

Ramtry — Fri, 12 Jul 2013 10:52:28 GMT

Hi Yuri,,

You are absolutely right about the frequency. I tested by giving the 400 MHz to the input of 4016 and out is very distorted. So, i came up with new IC TS3USB30EDGSR - TEXAS INSTRUMENTS - IC, SWITCHES, MULTIPLEXERS | Farnell United Kingdom

Moreover this IC has ESD protection as well.

I received this IC and gonna test it and update here,, I hope finger cross

Thanks,

RAM

Re: USB HOST to program the NAND Flash using mfgtool

Ramtry — Fri, 19 Jul 2013 12:06:23 GMT

Hi Yuri,,

multiplexing of USB 0 and USB 1 are done successfully. am posting the schematic

thanks

ram