AnsweredAssumed Answered

imx6q, DTE DCE question

Question asked by Angelo Dureghello on Dec 11, 2015
Latest reply on Dec 15, 2015 by Angelo Dureghello

Dear all,

 

in all the documentations i find in the network, and as well  in HCI_UART specification, a DTE is

the HOST of the communication, so it SETS the RTS and check CTS.

 

Because of the initial nature of the RS232, DTE -> DCE connection  that was using a straight connection,

the DTE TX(Output) must still be DCE TX(that must be Input at this DCE "connector" side, and i suppose

swapped inside the device to match UART chip RX).

 

So, from the above assumptions, i can't understand the image below (imx6 dual / quad reference

manual, page 5163):

In DCE, TX should be an input, as well as RTS. In DTE, TX is an output, and of course RTS also.

The manual shows TX as output in DCE. This seems at my humble opinion, wrong.

 

What am i missing here ?

 

 

 

Regards

Angelo

Outcomes