USB interface or micro for transferring data at 40Mb/s

[PyrO]

using usb in high speed

hi everyone

is there any usb interface or microcontroller which can transfer data over the usb port at about 40Mbytes/sec ?

thanks

 

[ehsanelahimirza]

Re: using usb in high speed

hi

now a days standard usb ports can handle 400MBps.
so we can use a normal portable HDD.which has more than 40 MBps speed
of data transfer

 

[aslm]

Re: using usb in high speed

This is a hard to answer question. As stated the USB 2.0 HiSpeed support up to 480 Mbit/s but this is in the spec only. There is oter limitations making it more of 40Mbyte/s then The 60 that should be possible. But still in theory...

Then there is the used device, HD memmorycardreader or simulars implementation of USB in firmware. There might be limitaitons du to poor coding of firmware or by slow HD memmory card or simular.

The last part is the Host driver. In Windows there is a USB driver and the preformance of this driver has a big impact on the speed you end up with.

From testing and other peoples experience I got the picture that 10Mbyte/s is easily done wid HiSpeed USB, with some optiomization its possible to reach figures of 20Mbyte/s. To get hier that that there is great deal of driver optiomisation that needs to be done.

regards Me