The CC254X User's Guide gives example clock rates for an I2C master but doesn't provide a formula for calculating rates outside of the table. Does anyone know how the three clock rate bits in the I2CCFG register affect the clock rates? Here's a copy of Table 20-6 'Clock Rates Defined at 32MHz' in section 20.1.5:
CR2 CR1 CR0 Bit Frequency Clock (kHz) Divided by
0 0 0 123 256
0 0 1 144 244
0 1 0 165 192
0 1 1 197 160
1 0 0 33 960
1 0 1 267 120
1 1 0 533 60
1 1 1 Reserved N/A