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i.MX6 - UART DTE-DCE mode -> Figure 64.2 in Reference Manual

Question asked by Guillermo Moreno on Jun 30, 2015
Latest reply on Jul 2, 2015 by Guillermo Moreno

Hello,

 

I'm wondering if there is a mistake or if I am misunderstanding what figure 64.2 in the i.MX6DQ RM states.

According to:

64.4.3.3 DTR_B: Input in DCE mode and output in DTE mode.

64.4.3.4 DSR_B: Output in DCE mode and input in DTE mode.

64.4.3.6 DCD_B: Output in DCE mode and input in DTE mode

64.4.3.7 RI_B: Output in DCE mode and input in DTE mode.

Ignoring the IOMUX function, figure 64.2 shows the exact opposite directions for these 4 signals in both DTE and DCE modes.

TX_DATA, RX_DATA, CTS_B and RTS_B behave as inputs or outputs, independent from DTE or DCE configurations, but the modem signals just don't match in this figure.

Am I getting a wrong interpretation here?

 

Thanks,

 

Guillermo

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