• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 35 subscribers
  • Views 755 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TL16C754B: TL16C754B application question check

Sulyn ZHANG
Expert 8700 points
Part Number: TL16C754B
Other Parts Discussed in Thread: AM3352, THVD1550, TL16C752D, TL16C754C

Hi Team,

My customer is using AM3352 in their new DCS communication project. As UART is not enough, we penetrated 2pcs TL16C754B to extend the UARTs, but here comes two questions need your help to confirm:

1. Is AM3353 be able to connect to 2pcs TL16C754B at same time and communication simulataneously?

2. Each TL16C754B will be connected to 4pcs THVD1550 with 3Mbps for each THVD1550, so will this be ok for this? If yes, anything we need reminder customer to do? If not, any suggestion to customer to realize their requirement?

I draw a draft function as below:

Best regards,

Sulyn

  • 0
    TI__Guru 72771 points
    Hello Sulyn,

    "1. Is AM3353 be able to connect to 2pcs TL16C754B at same time and communication simulataneously?"
    It looks like AM3352 has 2 dedicated UART channels so attaching 2 TL16C754B devices will be okay and I do not see a problem with this.

    "2. Each TL16C754B will be connected to 4pcs THVD1550 with 3Mbps for each THVD1550, so will this be ok for this?"
    It looks like the TL16C754B does not support RS485. We do have TL16C754C which does however there is a framing error errata associated with that one. My suggestion is to maybe use a 4x TL16C752D as the AM3352 looks like it actually supports up to 6 UART channels (2 are dedicated however 4 look like they can be configured to be UART)

    Thanks,
    -Bobby
  • 0 in reply to BOBBY
    Prodigy 30 points

    Bobby, this response appears to be for someone else named Sulyn.

    Don

  • 0 in reply to DON PREFONTAINE
    TI__Guru 72771 points

    Hey Don,

    This actually looks like the correct thread. I am working on your question now.

    -Bobby

  • 0 in reply to BOBBY
    TI__Expert 8700 points
    Hi Bobby,
    Thanks a lot for your quick reply. So do you mean we don't have 1 to 4 UART supporting 3Mbps for each RS485?
    If for TL16C752D, can it support 2 x RS485 and each RS485 port can support up to 3Mbps? If we want to persuade customer to use AM3352 + 4x TL16C752D, do we have reference schematic and code for customer to use?
    That's will be great and we can penetrate to customer this solution, otherwise customer won't consider it due to their weak design ability.

    Best regards,
    Sulyn
  • 0 in reply to Sulyn ZHANG
    TI__Guru 72771 points
    "do you mean we don't have 1 to 4 UART supporting 3Mbps for each RS485?"
    We do not have a 1 to 4 UART device that supports RS485. We do have 1 to 2 UART devices which do support RS485 mode.

    "If for TL16C752D, can it support 2 x RS485 and each RS485 port can support up to 3Mbps?"
    -Yes, as long as the UART Vcc is 3.3V or greater.

    "do we have reference schematic and code for customer to use?"
    -A reference schematic is something we may be able to help with however coding is not something our group does. You may be able to reach out to the group that supports the AM3352 to see if they have example code for UART.

    Thanks,
    -Bobby