Is this further than you've been? That screen tells me the dongle has been detected by cgminer, and if the light flashes on the board, then the board is getting communication from cgminer and if the next line reads getstatus no data finish, then the board is not succeeding in communicating back (not sure why).
Previously (with RX->TX and TX->RX) I've had it get further where outside of this snip, the 0xea60 device is found:
[2014-11-14 20:37:13] AMU0: Read freq Comms timeout (rerr=-7 relen=0)
[2014-11-14 20:37:13] AMU0: GetResults (amt=0 err=-7 ern=25)
[2014-11-14 20:37:13] AMU0: Read freq Comms timeout (rerr=-7 relen=0)
[2014-11-14 20:37:14] AMU0: GetResults (amt=0 err=-7 ern=25)
[2014-11-14 20:37:14] AMU0: Read freq Comms timeout (rerr=-7 relen=0)
With RX->RX, TX->TX, I played with when I plugin the uart device. Right now I have with debug and starting cgminer first:
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 3 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 10 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 5 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 1 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 8 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 3 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 2 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 3 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 2 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 13 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 8 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
[2014-11-15 09:43:08] USB: AMU0 read1 buffering 3 extra bytes
[2014-11-15 09:43:08] Read data(5):fffbbfbbbb
(or some other 'Read data' string depending on which time I fire this up) I still have green LED on the blade.
The blade is never formally "detected" by cgminer and hashing does not start.
My conclusion is that RX and TX were indeed swapped on the uart.