PCM4L datasheet(21/38 Pages) RENESAS

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R31DS0087EU0101 Rev.1.01

Page 21

Sep.28.21

pcm4l Datasheet

Table 10. Sys Log File Configuration Parameters

JSON Identifier

Default

Description

enable

This parameter is used to enable/disable forwarding log messages to an UDP

socket.

0 = Sys log disabled

1 = Sys log enabled

selectionMask

N/A

Mask is a 16-bit bitfield representing the message severity levels; same as for

STDOUT (see Table 8).

ipAddress

“10.64.10.45”

Destination IPv4 address.

udpPort

514

UDP port number.

Valid values: {0 - 65535}

Table 11. Reference Tracker Instance Configuration Parameters

JSON Identifier

Default

Description

instanceEnable

This parameter is used to enable/disable this particular reference tracker

instance.

trackerConfig

N/A

See Table 12.

Table 12. Reference Tracker Configuration Parameters

JSON Identifier

Default

Description

floorDelayEstimateSeconds

-1.0

The Floor Delay Estimate is a network latency estimate for an arbitrary delay

set/used by the servo. By tuning this configuration parameter for the 1588

implementation, faster lock times can be achieved.

Valid values: {-1.0 - 1.0} second; -1.0 means to have the tracker automatically

determine.

willCorrectFrequencyAtFirst

Snap

Provides the option to use the initial FFO estimation to correct local oscillator

FFO.

0 = Do not correct

1 = Correct; recommended (as of v4.0.1) for Write Phase mode to fast lock to

the GM

minExpProportionForMinTra

cking

0.12

Sets the minimal proportion of the exponentially distributed component required

for PDV minimal value tracking.

Valid values: {0.00 - 1.00}

stationarityBounds

N/A

This group includes the stationarity score bounds. Based on these values, the

servo decides whether the PDV is stationary or not.

measure1Lower {0.10 - 1.00} Stationarity Score

measure1Upper {1.0 - 10.0} Stationarity Score

measure2Upper {0 - 500} Skew Limit

maxNumberOfPhaseSnap

Sets the maximum number of phase snaps after initial acquisition is finished.

Valid values: {0 - 5} Phase snaps

doubleDcoThresholdNanose

conds

600

The threshold in nanoseconds to start an open-loop pull-in for phase correction.

Valid values: {200 - 1000000} Nanoseconds

phaseSnapThresholdSeconds

0.00001

The threshold in seconds for snap phase correction. This will depend on the

accuracy of the timestamper’s adjphase for relative time adjustment.

Valid values: {0.000003 - 0.000100} Seconds

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