So, I want to connect to UART1 on the BBB through the expansion header.  My 
question is on the data directions for each of the UART1 pins on P9.  Here 
is what I am assuming.


Pin   Function           Direction(relative to BBB)      Note

19     UART1_RTSn   OUTPUT                             Active low output 
connected to the destinations CTSn (driven by BBB)
20     UART1_CTSn   INPUT                                Active low input 
connected to the destinations RSTn  (driven by destination) 
4       UART1_RXD     INPUT                                Recieve data 
connected to destinations TXD (driven by destination)
24     UART1_TXD     OUTPUT                             Transmit data 
connected to destinations RXD(driven by BBB)

I know this looks obvious but I've gotten caught in the past by an author 
failing to show who the pin is relative to (DTE vs CDE).

Are my assumptions correct?

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