SI4734-C40-GM Silicon Laboratories Inc, SI4734-C40-GM Datasheet - Page 28

• Manufacturer Part Number: SI4734-C40-GM
• Description: IC RX AM/FM/SW/LW RADIO 20UQFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4734-C40-GM

• Frequency: 153kHz ~ 279kHz, 520kHz ~ 1.71MHz, 2.3MHz ~ 26.1MHz, 64MHz ~ 108MHz
• Modulation Or Protocol: AM, FM, SW-LW
• Applications: General Purpose
• Current - Receiving: 19.9mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: RSSI Equipped
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-UQFN, 20-µQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Si4734/35-C40
28
0x1100
0x1105
0x1106
0x1200
0x1300
0x1302
0x1303
0x1400
0x1401
0x1402
0x1403
0x1404
0x1500
0x1501
0x1502
0x3100
0x3102
0x3103
0x3200
0x3300
0x3302
0x3303
0x3400
Prop
AM_AUTOMATIC_VOLUME_
AM_SOFT_MUTE_MAX_
AM_SOFT_MUTE_SNR_
FM_SOFT_MUTE_RATE
RDS_INT_FIFO_COUNT
AM_SOFT_MUTE_RATE
AM_RSQ_INTERRUPTS
AM_CHANNEL_FILTER
FM_SEEK_BAND_TOP
CONTROL_MAX_GAIN
FM_BLEND_STEREO_
FM_BLEND_MONO_
MAX_ATTENUATION
RDS_INT_SOURCE
SNR_THRESHOLD
SNR_THRESHOLD
FM_DEEMPHASIS
FM_SOFT_MUTE_
FM_SOFT_MUTE_
FM_SEEK_BAND_
AM_DEEMPHASIS
AM_SEEK_BAND_
FM_SEEK_FREQ_
FM_SEEK_TUNE_
FM_SEEK_TUNE_
RSSI_TRESHOLD
FM_RSQ_INT_
ATTENUATION
RDS_CONFIG
THRESHOLD
THRESHOLD
THRESHOLD
SPACING
SOURCE
BOTTOM
BOTTOM
Name
Table 15. Selected Si473x Properties
Sets de-emphasis time constant. Default is 75 µs.
Sets RSSI threshold for stereo blend (full stereo above
threshold, blend below threshold). To force stereo set this to 0.
To force mono set this to 127. Default value is 49 dBµV.
Sets RSSI threshold for mono blend (full mono below threshold,
blend above threshold). To force stereo, set this to 0. To force
mono, set this to 127. Default value is 30 dBµV.
Configures interrupt related to RSQ metrics.
Sets the attack and decay rates when entering and leaving soft
mute.
Sets maximum attenuation during soft mute (dB). Set to 0 to
disable soft mute. Default is 16 dB.
Sets SNR threshold to engage soft mute. Default is 4 dB.
Sets the bottom of the FM band for seek. Default is 8750.
Sets the top of the FM band for seek. Default is 10790.
Selects frequency spacing for FM seek.
Sets the SNR threshold for a valid FM Seek/Tune. Default value
is 3 dB.
Sets the RSSI threshold for a valid FM Seek/Tune. Default
value is 20 dBuV.
Configures RDS interrupt behavior.
Sets the minimum number of RDS groups stored in the receive
RDS FIFO required before RDS RECV is set.
Configures RDS setting.
Sets de-emphasis time constant. Can be set to 50 us. De-
emphasis is disabled by default.
Selects the bandwidth of the channel filter for AM/SW/LW recep-
tion. The choices are 6, 4, 3, 2.5, 2, 1.8, or 1 kHz. In addition, a
power line rejection filter can be applied. The default is the
2 kHz bandwidth filter without power line rejection.
Selects the maximum gain for automatic volume control.
Configures interrupt related to RSQ metrics. All interrupts are
disabled by default.
Sets the rate of attack when entering or leaving soft mute. The
default is 278 dB/s.
Sets maximum attenuation during soft mute (dB).
Sets SNR threshold to engage soft mute. Default is 0 dB, which
disables soft mute.
Sets the bottom of the AM/SW/LW band for seek. Default is 520. 0x0208
Rev. 1.0
Description
Default
0x001E
0x222E
0x2A26
0x000A
0x0002
0x0031
0x0000
0x0040
0x0010
0x0004
0x0003
0x0014
0x0000
0x0000
0x0000
0x0000
0x0003
0x1543
0x0000
0x0040
0x0008
0x0008