Skyworks Si5341 - Fault Monitoring

4.5 Fault Monitoring
The Si5341/40 provides fault indicators which monitor loss of signal (LOS) of the inputs (IN0, IN1, IN2, XA/XB, FB_IN) and loss of lock
(LOL) for the PLL. This is shown in the following figure.
PLL
LPFPD
Mn
IN0
IN0
LOS0
÷P
0
IN1
IN1
÷P
1
FB_IN
FB_IN
IN2
IN2
÷P
2
LOL
Si5341/40
XB
XA
OSC
÷P
fb
Md
÷
LOSXAXB
LOS1
LOS2
LOSFB
LOL
LOS0 LOS1 LOS2
LOSXAB
INTR
÷Pxaxb
Figure 4.3. LOS and LOL Fault Monitors
Si5341, Si5340 Rev D Family Reference Manual • Clock Inputs
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
19 Rev. 1.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021 19