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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
REF_MON_0.IN_MON_LOS_CFG
Gap and margin configuration.
REF_MON_0.IN_MON_CFG
Reference monitor configuration.
TRIGGER: Writing to this byte triggers a read and activation in hardware of all the bytes of the REF_MON module.
-
Table 170: REF_MON_0.IN_MON_LOS_CFG Bit Field Locations and Descriptions
Offset
Address
(Hex)
REF_MON_0.IN_MON_LOS_CFG Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
00Ah
RESERVED[7:3]
LOS_GAP[2:1]
LOS_MARGI
N[0]
REF_MON_0.IN_MON_LOS_CFG Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description
RESERVED
N/A
-
This field must not be modified from the read value
LOS_GAP[2:1]
R/W
0
Number consecutive missing clocks to declare LOS.
0 means short term monitor will use LOS_MARGIN to detect LOS.
0 = LOS gap disabled
1 = 1
2 = 2
3 = 5
LOS_MARGIN[0]
R/W
0
Configure the LOS detection margin.
Tight margin aims for 1% freq error.
Loose margin aims for 25% freq error.
0 = tight margin
1 = loose margin
Table 171: REF_MON_0.IN_MON_CFG Bit Field Locations and Descriptions
Offset
Address
(Hex)
REF_MON_0.IN_MON_CFG Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
00Bh
RESERVED[7:6]
DIV_OR_NO
N_DIV_CLK_
SELECT[5]
TRANS_DET
ECTOR_EN[
4]
MASK_ACTI
VITY[3]
MASK_FRE
Q[2]
MASK_LOS[
1]
EN[0]