Hello Sandor,
Rocco is right with his 'marketing' statement, in fact the following is the case :
MC13191 2.4 GHz Transceiver, Reduced Function device (RFD)
MC13192 2.4 GHz Tranceiver, Full Function Device (or FFD)
MC13193 2.4 GHz Transceiver, FFD + ZigBee socket License (few $cents).
The last device is indeed the MC13192 as the actual device, so use this manual instead of looking for the MC13193, which fysically does not exist. The MC13192 is fully ZigBee compliant, so it supports this, but to use this commercially you are entitled to pay the socket license also, so you can order the MC13193 from Freescale to get this arranged.
For a good example and a registermap; take a look on the Freescale website with the url : www.freescale.com/zigbee, go to the software section and scroll down till you see the SMAC 4.1.a version; download this and you have your information.
In the hardware section you also find the Reference manual (MC13192RM) for the MC13192, which also includes the registermap, as Rocco mentioned already.
Regards,
Cheesehead