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???
12/17/08 20:24
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 		 #161002 - Or the new FTDI FT2232H
Responding to: ???'s previous message
Andy Peters said:
If you want to do High-Speed transactions, ditch the 89C51 and use the Cypress EZ-USB FX2 family.

Or use one of the new highspeed usb devices from FTDI. E.g.
http://www.ftdichip.com/Products/FT2232H.htm
FTDI said:
RS232/RS422/RS485 UART Transfer Data Rate up to 12Mbaud. (RS232 Data Rate limited by external level shifter).
USB to parallel FIFO transfer data rate up to 10Mbyte/sec.
Single channel synchronous FIFO mode for transfers > 25 Mbytes/sec.

Combined with for instance a 100MHz C8051F120 from SiLabs you have quite some speed at your fingers.


List of 26 messages in thread
TopicAuthorDate
About USB interfacing            01/01/70 00:00      
   SILabs - FTDI            01/01/70 00:00      
      F340            01/01/70 00:00      
   Like this            01/01/70 00:00      
   FTDI makes it pretty easy            01/01/70 00:00      
   re: About USB interface            01/01/70 00:00      
      Or the new FTDI FT2232H            01/01/70 00:00      
         Too bad it is so slow ...            01/01/70 00:00      
            Why your pauses?            01/01/70 00:00      
               Indeed            01/01/70 00:00      
                  Driver model            01/01/70 00:00      
                     I see similar behavior under Fedora            01/01/70 00:00      
               It gets "curiouser and curiouser" ...            01/01/70 00:00      
                  sleep, perchance to dream            01/01/70 00:00      
                     Does not sound like his problem            01/01/70 00:00      
                     I'm not so sure ...            01/01/70 00:00      
                  Powered how?            01/01/70 00:00      
                     The drive is a Western Digital 1 TB "MyBook"            01/01/70 00:00      
            work it            01/01/70 00:00      
               Yes, times are changing.            01/01/70 00:00      
                  times            01/01/70 00:00      
                     Don't kill off SCSI too quickly            01/01/70 00:00      
                     It is not useful work to me ... I have done it, but ...            01/01/70 00:00      
            Bits do not equal bytes            01/01/70 00:00      
               It's the FIFO, not the USB            01/01/70 00:00      
   added with another MCUs or special chips            01/01/70 00:00      

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