SI5326C-C-GMR Silicon Laboratories Inc, SI5326C-C-GMR Datasheet - Page 32

• Manufacturer Part Number: SI5326C-C-GMR
• Manufacturer: Silicon Laboratories Inc

Si5326
Reset value = 0010 1100
32
Register 19.
Name
Type
6:5
4:3
2:0
Bit
Bit
7
VALTIME [1:0] VALTIME [1:0].
LOCKT [2:0]
FOS_EN
FOS_THR
FOS_EN
R/W
Name
D7
[1:0]
FOS_EN.
Frequency Offset Enable globally disables FOS. See the individual FOS enables
(FOSX_EN, register 139).
0: FOS disable
1: FOS enabled by FOSx_EN
FOS_THR [1:0].
Frequency Offset at which FOS is declared (relative to the selected FOS reference):
00: ± 11 to 12 ppm (Stratum 3/3E compliant, with a Stratum 3/3E used for REFCLK
01: ± 48 to 49 ppm (SMC)
10: ± 30 ppm (SONET Minimum Clock (SMC), with a Stratum 3/3E used for REFCLK.
11: ± 200 ppm
Sets amount of time for input clock to be valid before the associated alarm is removed.
00: 2 ms
01: 100 ms
10: 200 ms
11: 13 seconds
LOCKT [2:0].
Sets retrigger interval for one shot monitoring phase detector output. One shot is trig-
gered by phase slip in DSPLL. Refer to the Si53xx Family Reference Manual for more
details.
000: 106 ms
001: 53 ms
010: 26.5 ms
011: 13.3 ms
100: 6.6 ms
101: 3.3 ms
110: 1.66 ms
111: .833 ms
D6
FOS_THR [1:0]
R/W
D5
Rev. 1.0
D4
VALTIME [1:0]
R/W
Function
D3
D2
LOCKT [2:0]
R/W
D1
D0