While updating my local copies of datasheets, I see that SWRS061I from 20131105 changed the value and description of the VERSION register from 4 (Chip version number) to 14 (Chip version number. Subject to change without notice).
I use the VERSION register to distinguish CC110x models: historically the following has been a reliable identifier for the specific chips I've used:
PARTNUM | VERSION | Radio
:------------ | :----------- | :------
0 | 3 | CC1100
0 | 4 | CC1101
0 | 5 | CC1100E
0 | 6 | CC430 RF1A
0 | 7 | CC110L
128 | 3 | CC2500
The documentation change suggests that this is not a valid use of the register. Is there another solution to identifying the particular radio, or was this change incorrect?