In SX Microcontrollers, SX/B Compiler and SX-Key Tool, George Herzog wrote:

From what I understand an SX can handle 16 PWM channels within the time frame you want.

Apparently, you don't have to have 2ms time slots for each channel in the 20ms overall cycle. [that would limit it to 10]  And the 20ms slot can actually be longer, like 30-40 ms for the Servo Motors.  You just have to mutiplex and demutiplex your data for transmission in any format that is acceptible.

The transmission of servo periods can occur back to back, so that as Channel #1 stops, Channel #2 begins and so on.  At least, that seems to be the way it was explained in Jen's Autopilot [see SX Contest Winner's 3rd Prize].  I imagine that if you want more channels, you could transmit 0.5ms for center and convert it by doubling at the reciever to 1ms.  Suddenly you can use an SX-48 for the reception and distribution of lots of channels [maybe 32?].

The web site that Jon refers to is all new information to me and quite useful.  

Of course, if you are not an engineer at some point you must find one or become one to really get this going.

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