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Si47xx-EVB
Table 9. FM Transmitter Settings in Analog Mode Property Window Descriptions (Continued)
Item
Reference Clock
Prescaler
Description
This field is used to specify the prescaler value. The
input to the RCLK pin divided by the prescaler is the
Range
1–4095
Devices
All
reference clock. The reference clock must be in the
range of 31130 to 34406 Hz.
Audio Level High
Duration (mSec)
Audio Level High
Threshold (dBFS)
Set the duration for the audio level high before an
interrupt is generated.
An interrupt will be generated when the audio input
level rises above this threshold for the duration greater
0–65535
–70 to 0
All
All
than the Audio Level High Duration setting. This may
also be called loud detection indicator.
Audio Level Low
Duration (mSec)
Audio Level Low
Threshold (dBFS)
Set the duration for the audio level low before an inter-
rupt is generated.
An interrupt will be generated when the audio input
level falls below this threshold for the duration greater
0–65535
–70 to 0
All
All
than the Audio Level Low Distortion setting. This may
be called silence detection indicator.
Varactor Capacitor This field allows the user to manually overwrite the
Automatic: 0,
All
46
Overwrite
tuning capacitance. A number 0 indicates that the
tuning cap is automatically adjusted. Any number
other than 0 (1 to 191) will indicate that the tuning cap
is manually adjusted.
Rev. 0.8
Manual: 1–191
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