On Dec 1, 2008, at 9:01 PM, Eric Lemmon wrote: > Nate, > > C'mon, lighten up! The reason why Motorola added new pins around the > outside of the 16-pin numbering plan is to ensure that programming > and test > cables already being sold would not become instantly obsolete. It > would > annoy me greatly if Motorola required me to have two incompatible > cables, > one for the CDM series and another for earlier models. I am > grateful that > the engineers figured out a way to use existing cables on both old > and new > models.
I said, Fast, Cheap, Done Right... pick any two. It meets the "Cheap" part just fine. :-) :-) :-) > Now, to answer your question about what is on the outside pins, one > of the > extra pins is used for boot control logic that is unique to the CDM > series, > for flashing the firmware. It seems like a good idea to use a "new" > pin for > this purpose, so that existing cables retain the same numbering > plan. Can > you imagine the frustration of Motorola radios users who are trying to > figure out if signal ground is still on pin 7 or on pin 9- or is it > now > called pin 5? Don't worry about plugging a 16-pin connector in wrong, > because there is a positioning key that prevents mating unless the > 16-socket > plug is centered on the 20 pin jack. Ahhh... it's keyed. I didn't know that. That'll work. A blocked pin on the 16 pin usually, I take it? -- Nate Duehr [EMAIL PROTECTED]
