User`s guide

Si47xx-EVB
Rev. 0.8 67
Table 15. FM Receiver Settings Property Window Descriptions
Items Description Range Applicable Devices
AGC Attack Rate
Larger values provide slower attack
and smaller values provide faster attack.
4–248 Si474x
AGC Index
If AGC override is set to “ON,” this property
will determine the AGC setting.
0–26 All
AGC Override
If set to “ON,” the AGC property will be used
to set the value of the AGC. If set to “OFF,”
the AGC setting will be automatically
determined by the part.
ON/OFF All
AGC Release Rate
Larger values provide slower
release and smaller values provide faster
release.
4–248 Si474x
De-emphasis
Selects de-emphasis of 50 µs or 75 µs. 50 µs, 75 µs All except Si4749
Reference Clock
Frequency (Hz)
This field is used to specify the frequency of
the reference clock. The input to the RCLK
pin divided by the prescaler is the reference
clock. The reference clock must be in the
range of 31130 to 34406 Hz.
31130–
34406 Hz
All
Reference Clock
Prescaler
This field is used to specify the prescaler
value. The input to the RCLK pin divided by
the prescaler is the reference clock. The
reference clock must be in the range of
31130 to 34406 Hz.
1–4095 Hz All
Digital DCLK Falling
Edge
ON uses falling edge of DCLK for sampling.
ON, OFF
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Format
Format of digital audio output.
I2S, Left-Justi-
fied, DSP
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85
Digital Mono Mode
Enable
ON enables mono in digital audio output.
ON, OFF
Si4705/06,
Si4721/31/35/37/39,
Si4730/34/36/38-D60 and
later,
Si4741/43/45,
Si4784/85