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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
Module: REF_MON_0
Reference monitor 0.
REF_MON_0.IN_MON_FREQ_CFG
Frequency validation interval and frequency offset limit.
IN_PNMODE[4]
R/W
0
Select PMOS or NMOS differential mode.
Only applicable in differential mode.
0 = NMOS
1 = PMOS
IN_INVERSE[3]
R/W
0
Invert input.
0 = normal
1 = inverse
RESERVED
N/A
-
This field must not be modified from the read value
IN_EN[0]
R/W
0
Enable input.
0 = disabled
1 = enabled
Table 163: REF_MON_0 Register Index
Offset
(Hex)
Register Module Base Address: C2E0h
a
a. This register module is instantiated multiple times. This is the base address of the first instantiation of this module. For later instantiations,
use the appropriate module base address.
Individual Register Name
Register Description
000h
Reference monitor frequency configuration.
001h
REF_MON_0.IN_MON_FREQ_VLD_INTV
Frequency validation short interval.
002h
REF_MON_0.IN_MON_TRANS_THRESHOLD
Reference clock phase transient threshold.
004h
Reference clock phase transient detection period.
006h
Activity limit, qualification and disqualification timers.
008h
REF_MON_0.IN_MON_LOS_TOLERANCE
Loss of signal tolerance configuration.
00Ah
Loss of signal configuration.
00Bh
Reference monitor configuration.
Table 164: REF_MON_0.IN_MON_FREQ_CFG Bit Field Locations and Descriptions
Offset
Address
(Hex)
REF_MON_0.IN_MON_FREQ_CFG Bit Field Locations
D7
D6
D5
D4
D3
D2
D1
D0
000h
RESERVED[
7]
VLD_INTERVAL[6:3]
FREQ_OFFS_LIM[2:0]
INPUT_0.IN_MODE Bit Field Descriptions
Bit Field Name
Field Type Default Value
Description