Silicon Laboratories SI5351A/B/C Product Manual page 17

Si5351A/B/C
Disable Outputs
Set CLKx_DIS high; Reg. 3 = 0xFF
Powerdown all output drivers
Reg. 16, 17, 18, 19, 20, 21, 22, 23 =
0x80
Set interrupt masks
(see register 2 description)
Write new configuration to device using
Register
the contents of the register map
Map
generated by ClockBuilder Desktop. This
step also powers up the output drivers.
Use ClockBuilder
(Registers 15-92 and 149-170)
Desktop v3.1 or later
Apply PLLA and PLLB soft reset
Reg. 177 = 0xAC
Enable desired outputs
(see Register 3)
2
Figure 12. I C Programming Procedure
Preliminary Rev. 0.95 17