AN543
Rev. 0.9
211
RESP
Bit
Name
Function
1
7:6
Reserved
Values may vary.
1
5
CHBWH_INT
(Available in Si475x-A40 only)
CHBWH_INT - Indicates that the Channel Bandwidth is
greater than the threshold set by ACF_CBW_THRESHOLD.
1
4:3
Reserved
Values may vary.
1
2
HICUT_INT
Indicates that HICUT cutoff frequency has crossed below the
HICUT threshold set by AM_ACF_HICUT_THRESHOLD.
1
1
CHBW_INT
Indicates that Channel Filter Bandwidth is less than the
threshold set by AM_ACF_CHBW_THRESHOLD.
1
0
SOFTMUTE_INT
Indicates that SM attenuation has increased above
AM_ACF_SM_THRESHOLD.
2
7:1
Reserved
Values may vary.
2
0
SMUTE
0 = Audio is not soft muted.
1 = Audio is soft muted.
3
7
Reserved
Values may vary.
3
6:0
SMATTN[6:0]
Soft mute attenuation level in dB.
Range: 0–31 in Si475x-A30 and earlier, 0–63 in Si475x-A40
and later.
4
7:0
CHBW[7:0]
Channel Filter Bandwidth in 100 Hz.
Range: 0–150.
5
7:0
HICUT[7:0]
HICUT cutoff frequency in units of 100 Hz.
Range: 10–50.
6
7:0
Reserved
Values may vary.
7
7:0
Reserved
Values may vary.
8
7:0
LOWCUT[7:0]
(Available in Si475x-A30 and later.)
Lowcut cutoff frequency in units of 10Hz. Only available if
lowcut is enabled by the AM_LOWCUT_MIN_FREQ property.
Range: 1–100
