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Intel NUC BNUC11TNHI70002 Tiger Canyon serial port wiring diagram and 12v tolerance

JosEil
Beginner
300 Views

Hi All

do i understand correctly that the wiring between the serial port header (H) and the DB9 connector is straight.  like the diagram below.

serial port header (H) - DB9 connector

1  ----------------------  1

2  ----------------------  2

3  ----------------------  3

4  ----------------------  4

5  ----------------------  5

6  ----------------------  6

7  ----------------------  7

8  ----------------------  8

9  ----------------------  9

 

Are the Serialport inputs tolerant to +/-12v rs232 signal levels

 

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8 Replies
n_scott_pearson
Super User Retired Employee
278 Views

The layout for a standard 9-pin serial port connector is as follows:

n_scott_pearson_3-1669995244860.png

Per the TPS for the TN NUCs,

n_scott_pearson_4-1669995395237.png

As you can see, it is definitely a straight-through connection from header to connector.

AFAIK, this is a TTL-level (+/-5V) serial port implementation, not a full RS232c (+/-12V) implementation. I base this premise on the fact that all previous implementations in the NUC series were TTL-level implementations. Unfortunately, AFAICS, the TPS does not properly detail the port's implementation. I have send an email to the design team for clarification. I will respond here once I have a response.

...S

 

 

n_scott_pearson
Super User Retired Employee
263 Views

So I was correct; they described its requirements as "RS232 complaint, 5V drivers, +/-25V tolerant, support for 115.2Kb/s".

...S

JosEil
Beginner
249 Views

Hi Scott,


Thanks for the quick answer.
So serial outputs are at 5v and inputs will tollerate/survive +/-12v

With kind regards
Jos

n_scott_pearson
Super User Retired Employee
228 Views

Yes. The question becomes whether the other end will be tolerant of only receiving 5V. I have had mixed results myself when using these to try to communicate with older (ok, ancient) hardware.

...S

JosEil
Beginner
202 Views

yes thats also my concern, i asked for infomation about my RS232 device (Vantage pro weather station)

Steven_Intel
Moderator
148 Views

Hello JosEil,


Thank you for posting on the Intel® communities.


We would like to know if you need any further assistance, based on the information given.


Best regards,


Steven G.

Intel Customer Support Technician.


JosEil
Beginner
141 Views

Hi Stephen,

I got all the info i needed thanks

Jos

Steven_Intel
Moderator
111 Views

Many thanks for your response.


Since the thread is now solved, we will proceed to close it. 


Please keep in mind that this thread will no longer be monitored by Intel. Thank you for your understanding.  


Best regards,


Steven G.

Intel Customer Support Technician.


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