Microchip Technology SA5 Series, User Manual

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MAC-SA5X User’s Guide
DS50002938A-page 34

2019 Microchip Technology Inc.
4.4.2 Parameter Attributes
Each parameter has a set of fixed attributes that describe semantic information about
itself: read-only, stored to flash, etc. These attributes are represented as a 32-bit field,
below.
TABLE 4-7: PARAMETER ATTRIBUTES
31-
15
14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
— Units — — — —
Persisted
—
Silent
Read-Only
— —
• Read-Only: The parameter cannot be written by the user.
• Silent: Changes to the value are excluded from the upd command.
• Persisted: This parameter will be written to flash by a store command.
• Units: A 5-bit enumeration containing the parameter’s real-world units.
Use the
browse
command to learn the attributes of each parameter.
4.4.2.1 PARAMETER UNITS ATTRIBUTE
The following table maps Units Attribute values to Parameter units:
779
DisciplineThresholdPps0
R/W
Phase threshold for determining a
disciplining lock to PPS Input 0.
ns 1 to 1,000
780
DisciplineThresholdPps1
R/W
Phase threshold for determining a
disciplining lock to PPS Input 1.
ns 1 to 1,000
Oscillator Parameters
1293
AnalogTuning
RO
The measured analog tuning input
voltage.
mV 0 to 5,000
1296
Temperature
RO Ambient temperature of the unit. m°C
–40,000 to
100,000
1300
DigitalTuning
R/W
Digital tuning of the oscillator fre-
quency. Default is 0. Values are vol-
atile (not preserved across a
power-cycle).
x 10
-15
±20,000,000
1306
PowerSupply
RO
The measured voltage of the exter-
nal power supply.
mV 0 to 36,300
1312
AnalogTuningEnabled
R/W
Analog tuning is enabled. Default is
false.
Boolean 0 or 1
1321
EffectiveTuning
RO
Total effective digital frequency tune.
This provides little insight to the user
since its value will vary depending
upon a number of constantly chang-
ing internal adjustments.
x 10
-15
±2,147,483,647
1332
LockProgress
RO Progress toward acquiring lock. % 0 to 100
Note 1: Allowable ranges are integer-only, unless indicated otherwise.
TABLE 4-6: PARAMETER INDEX (CONTINUED)
ID Name R/W Description Units
Allowable
Range ( Note 1 )