SI5374 Datasheet, PDF (18/69 Pages) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

Si5374
that have high wander. Experience has shown that in
spite of having low jitter, some MEMs oscillators have
high wander, and these devices should be avoided.
Silicon Labs does not recommend using MEMS based
oscillators as the Si5374 frequency reference. Contact
Silicon Labs for details.
5.6. Alarms
To assist in the programming of the IRQ_n pins, refer to
the below diagram of the Si5374 alarm structure.
LOSx_INT
LOS1_INT
LOS2_INT
FOS1_INT
in _Sticky out
Write 0
to clear
in _Sticky out
Write 0
to clear
in _Sticky out
Write 0
to clear
in _Sticky out
Write 0
to clear
LOSX_FLG
LOSX_MSK
LOS1_FLG
LOS1_MSK
LOS2_FLG
LOS2_MSK
FOS1_FLG
FOS1_MSK
INT_POL
IRQ_PIN
E
IRQ_n
FOS2_INT
LOL_INT
in _Sticky out
Write 0
to clear
in _Sticky out
Write 0
to clear
FOS2_FLG
FOS2_MSK
LOL_FLG
LOL_MSK
Figure 5. Si5374 Alarm Structure
18
Rev. 1.1