libftdi Archives

Subject: Re: FT245R transfer rates

From: Xiaofan Chen <xiaofanc@xxxxxxxxx>
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 22 Feb 2010 21:59:49 +0800
On Mon, Feb 22, 2010 at 9:02 PM, Jan Wilmans <janwilmans@xxxxxxxxx> wrote:

> Basically what you are saying is that in the: "Data transfer rates up to
> 1Mbyte / second."

That is either direction.

> what they mean is 125Kb/s downspeed (host -> FT245 data transfer) and
> 250Kb/s upspeed (FT245 -> host data transfer) = ~~ 1Mb/s (actually 750 Kb/s)
> ??
> So you agree that when looking at the speed of data in one direction only
> (host -> FT245R transfers) the speeds is indeed only 125 Kb/s ?

No I mean it can reach 1MBytes/second either direction. 1216KBytes
per second is the theoretical limit but there are some overheads.

I do not know where you get this 250kb/s and 750kb/s thingy. 1Bytes=8bits.
So 1MBytes/s = 8000 kb/s.


libftdi - see for details.
To unsubscribe send a mail to libftdi+unsubscribe@xxxxxxxxxxxxxxxxxxxxxxx   

Current Thread