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USB to RS232

s1buell

Does anyone here have any experience with this topic?

 

I`m going from a TUSB2077APTRTUSB2077APTR controller to two FT232RL-REELFT232RL-REEL IC`s just to test this prototype idea.

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  • Tom, cool problem. Because everybody has thrown there 2 cents in I will toss mine into the ring. First I don't think that your Arduino could ever handle 8 UARTs full speed. I don't think that USB will work (again speed issues),

    first, remember that a URART is an 8-bit device with two registers, and the IO side of the gear you will need TTL to RS232 chip like a MAX back to the computer side of the world. all of the data lines are run in parallel between the USARTs and your CPU now. then you take the 8 interrupt lines and put them through an 8 to BCD encoder. As well as OR tieing them together to your interrupt pin.  the software looks at the interrupt pin, when it comes in it reads the URART address and gate the data on to the data bus and then read it. Here is a neet TI dual UART TL16C2752. Its package is a RHB 32 or QVFN 5mm x 5mm.

    Good Luck

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  • Tom, cool problem. Because everybody has thrown there 2 cents in I will toss mine into the ring. First I don't think that your Arduino could ever handle 8 UARTs full speed. I don't think that USB will work (again speed issues),

    first, remember that a URART is an 8-bit device with two registers, and the IO side of the gear you will need TTL to RS232 chip like a MAX back to the computer side of the world. all of the data lines are run in parallel between the USARTs and your CPU now. then you take the 8 interrupt lines and put them through an 8 to BCD encoder. As well as OR tieing them together to your interrupt pin.  the software looks at the interrupt pin, when it comes in it reads the URART address and gate the data on to the data bus and then read it. Here is a neet TI dual UART TL16C2752. Its package is a RHB 32 or QVFN 5mm x 5mm.

    Good Luck

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