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©2018 Integrated Device Technology, Inc
September 12, 2018
8A3xxxx Family Programming Guide
Module: DPLL_0
Configures the DPLL.
REF_MON_0.IN_MON_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
DIV_OR_NON_DIV_CLK_
SELECT[5]
R/W
0
Select the divided clock or the non-divided clock as an input for the reference
monitor.
Only applies to reference monitors 2, 3, 10 and 11.
0 = divided clock
1 = non-divided clock
TRANS_DETECTOR_EN[
4]
R/W
0
Phase transient detector enable/disable.
0 = disabled
1 = enabled
MASK_ACTIVITY[3]
R/W
0
Include or exclude activity monitor from reference qualification or
disqualification.
0 = excluded
1 = included
MASK_FREQ[2]
R/W
0
Include or exclude frequency offset monitor from reference qualification or
disqualification.
0 = excluded
1 = included
MASK_LOS[1]
R/W
0
Include or exclude LOS from reference qualification or disqualification.
0 = excluded
1 = included
EN[0]
R/W
0
Enable or disable reference monitor.
When disabled and the corresponding input clock is enabled, this input is
always qualified to be a reference.
When enabled and MASK_ACTIVITY = 0, MASK_FREQ = 0, and MASK_LOS =
0, this input is always qualified to be a reference.
0 = disabled
1 = enabled
Table 172: DPLL_0 Register Index
Offset
(Hex)
Register Module Base Address: C3B0h
a
Individual Register Name
Register Description
000h
Configure frequency step size for GPIO increment/decrement mode.
002h
Reference switching configuration and forced lock reference selection.
003h
Configure other DPLL feedback as a reference.
004h
External feedback and frame/sync pulse configuration.
005h
DPLL loop filter update rate configuration.