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Topics - lordcape

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Hi. I have a proposal for a project where I have to manage the samples of an ADC of 8 bits @ 100 MHz. I have to deliver the samples to a PC quite fast, so I think that the FT600/601 would be a nice choice for that. The thing is that I've used in the past the FT232H with the FIFO sync mode (60 MHz clk FIFO) and the bottleneck where in FTDI D2xx drivers...they limited my data transfer speed much below the 480 Mbits of USB 2.0 (and in Windows worked faster than Linux, FTDI support said in that moment).

So I write this post to ask you if you (people of FTDI) have a practical (not the theoretical 5Gbps) number of the transfer rate in MB/s with the FT600/601 working in SYNC FIFO using D3xx drivers. My application needs 100 Ms/s maximum but if I use the 32 bits parallel FIFO I only would need 25 Ms/s. I would like to have a good margin to be sure that I don't loose samples (as in my FT232H old project)....

Thanks and regards

SR

2
Hi. In my application I have three FT4232H connected to a hub. The hub is connected to a PC with Linux. Each FT4232H shows four tty that I use as UARTS. Each FTDI has a hardware device (the same) connected to it. Each of these devices uses each UART to send messages with a different protocol between them four. The problem is that when I connect the hub, the host PC can ennumerate in different ways the ttys between power shutdown of the PC. And I can confuse the UARTS so I can confuse of the device I'm listening.

My question is if there is any possibility to know, before listening the UARTS,which tty is connected with which FTDI. Also, to know which tty is connected to the hardware FTDI port (A,B,C or D).

Now I'm solving this by trial and error, what is time wasting and very uncomfortable for the user.

I hope you can understand my poor english. Thanks and regards

SR


3
Discussion - Hardware / Use of a Hub IC to connect 3 FT4232H
« on: December 07, 2017, 03:44:06 PM »
Hi. I have used in many projects the FT4232H. In a new project, I need to use three FT4232H to get 12 independent UARTS but only one USB cable. So I need to use a HUB. Can FTDI recommend me a part to develop my project? I looked for the TUSB4041I from TI but perhaps FTDI can recommend another part. Thanks and regards!

SR

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