Si4720-A10-GM Silicon Laboratories Inc, Si4720-A10-GM Datasheet - Page 37

• Manufacturer Part Number: Si4720-A10-GM
• Description: RF Transceiver Broadcast FM Radio Transceiver
• Manufacturer: Silicon Laboratories Inc

Specifications of Si4720-A10-GM

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Transmit Properties
0x0001
0x0101
0x0103 DIGITAL_INPUT _SAMPLE_RATE
0x0201
0x0202
0x2100
0x2101
0x2102
0x2103
0x2104
0x2105
0x2106
0x2107
0x2200
0x2201
0x2202
Prop
0x24
0x27
0x28
0x80
0x81
TX_COMPONENT_ENABLE
TX_ACOMP_ATTACK_TIME
DIGITAL_INPUT _FORMAT
TX_ACOMP_THRESHOLD
TX_PILOT_FREQUENCY
TX_LINE_INPUT_LEVEL
TX_LINE_INPUT_MUTE
TX_AUDIO_DEVIATION
TX_PILOT_DEVIATION
FM_AGC_OVERRIDE
TX_ACOMP_ENABLE
REFCLK_PRESCALE
TX_RDS_DEVIATION
TX_PREEMPHASIS
FM_RDS_STATUS
FM_AGC_STATUS
REFCLK_FREQ
GPIO_SET
GPIO_CTL
GPO_IEN
Name
Table 20. Si472x Command Summary (Continued)
Table 21. Si472x Property Summary
Returns RDS information for current channel and reads an entry
from RDS FIFO (Si4721 only).
Configures GPO1, 2, and 3 as output or Hi-Z.
Sets GPO1, 2, and 3 output level (low or high).
Queries the current AGC settings
Override AGC setting by disabling and forcing it to a fixed value
Enables interrupt sources.
Configures the digital input format.
Configures the digital input sample rate in 1 Hz steps.
Default is 0.
Sets frequency of the reference clock in Hz. The range is
31130 to 34406 Hz, or 0 to disable the AFC. Default is
32768 Hz.
Sets the prescaler value for the reference clock.
Enable transmit multiplex signal components.
Default has pilot and L-R enabled.
Configures audio frequency deviation level. Units are in
10 Hz increments. Default is 6825 (68.25 kHz).
Configures pilot tone frequency deviation level. Units are
in 10 Hz increments. Default is 675 (6.75 kHz)
Si4721 Only. Configures the RDS/RBDS frequency
deviation level. Units are in 10 Hz increments. Default is
2 kHz.
Configures maximum analog line input level to the
LIN/RIN pins to reach the maximum deviation level pro-
grammed into the audio deviation property TX Audio
Deviation. Default is 636 mV
Configures the frequency of the stereo pilot. Default is
19000 Hz.
Enables audio dynamic range control and limiter.
Default is 2 (limiter is enabled, audio dynamic range
control is disabled).
Sets the threshold level for audio dynamic range control.
Default is –40 dB.
Sets the attack time for audio dynamic range control.
Default is 0 (0.5 ms).
Sets line input mute. L and R inputs may be indepen-
dently muted. Default is not muted.
Configures pre-emphasis time constant.
Default is 0 (75 µS).
Rev. 1.0
Description
PK
.
Si4720/21-B20
0x1AA9
0xFFD8
Default
0x02A3
0x00C8
0x327C
0x4A38
0x0000
0x0000
0x0000
0x8000
0x0001
0x0003
0x0000
0x0000
0x0002
0x0000
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