Reg Address
Bit Field
Type
Name
Description
0x0537
7:4
R/W
IN_OOF_MSK
Determines the OOF status for IN3
- IN0 and is used in determining a
valid clock for the automatic input
selection.
0: Use OOF in the automatic clock
switching logic (default)
1: Mask (ignore) OOF from auto-
matic clock switching logic
This register is for the input clock fault masks. For each of the four clock inputs, the OOF and/or the LOS fault can be used for the clock
selection logic or they can be masked from it.
Note:
The clock selection logic can affect entry into Holdover.
Table 12.132. Register 0x0538-0x0539 Clock Input Priorities
Reg Address
Bit Field
Type
Name
Description
0x0538
2:0
R/W
IN0_PRIORITY
IN0 - IN3 priority assignment for
the automatic switching state ma-
chine. Priority assignments in de-
scending importance are:
1, 2, 3, 4, or 0 for no priority
5-7: Reserved
0x0538
6:4
R/W
IN1_PRIORITY
0x0539
2:0
R/W
IN2_PRIORITY
0x0539
6:4
R/W
IN3_PRIORITY
These registers are used to assign priority to each input clock for automatic clock input switching. The available clock with the highest
priority will be selected. Priority 1 is first and most likely to be selected, followed by priorities 2–4. Priority 0 prevents the clock input
from being automatically selected, though it may still be manually selected. When two valid input clocks are assigned the same priority,
the lowest numbered input will be selected. In other words, IN0 has priority over IN1-IN3, IN1 has priority over IN2-IN3, etc, when the
priorities are the same.
Table 12.133. Register 0x053A Hitless Switching Mode
Reg Address
Bit Field
Type
Name
Description
0x053A
1:0
R/W
HSW_MODE
1: Default setting, do not modify
0, 2, 3: Reserved
0x053A
3:2
R/W
HSW_PHMEAS_CTRL
0: Default setting, do not modify
1, 2, 3: Reserved
Table 12.134. Register 0x053B–0x053C Hitless Switching Phase Threshold
Reg Address
Bit Field
Type
Name
Description
0x053B
7:0
R/W
HSW_PHMEAS_THR
Value calculated in CBPro.
0x053C
9:8
R/W
HSW_PHMEAS_THR
Table 12.135. Register 0x053D Hitless Switching Length
Reg Address
Bit Field
Type
Name
Description
0x053D
4:0
R/W
HSW_COARSE_PM_LEN
Value calculated in CBPro.
Si5386 Rev. E Reference Manual • Register Map
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
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