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CY28331
Document #: 38-07491 Rev. *E
Page 9 of 17
RESET W ATCHDOG TIMER
Set WD(0:3) Bits = 0
INITIALIZE W ATCHDOG TIMER
Set Frequency Revert Bit
Set WD(0:3) = (# of Sec ) x 2
SET SOFTW ARE FSEL
Set SW Freq_Sel = 1
Set FS(0:4)
Wait for 6msec For
Clock Output to Ramp to
Target Frequency
Hang?
Y
W ATCHDOG TIMEOUT
N
CLEAR W D
Set WD(0:3) Bits = 0
Exit
Reset
FrequencyRevert Bit =
0
Set Frequency to
FS_HW_Latched
FrequencyRevert Bit =
1
Set Frequency to FS_SW
Set SRESET# = 0 for 6 msec
SET DIAL-A-FREQUENCY
Load M and N Registers
Set Pro_Freq_EN = 1
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