SI4713-B30-GMR【PDF 31/42 页】IC TX FM RADIO RPS/RDS 20UQFN

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Si4712/13-B30

Rev. 1.1

Table 18. Si471x Property Summary

Prop

Name

Description

Default

0x0001

GPO_IEN

Enables interrupt sources.

0x0000

0x0101

DIGITAL_INPUT _FORMAT

Configures the digital input format.

0x0000

0x0103 DIGITAL_INPUT _SAMPLE_RATE

Configures the digital input sample rate in 10 Hz steps.

Default is 0.

0x0000

0x0201

REFCLK_FREQ

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.

0x8000

0x0202

REFCLK_PRESCALE

Sets the prescaler value for the reference clock.

0x0001

0x2100

TX_COMPONENT_ENABLE

Enable transmit multiplex signal components.

Default has pilot and L-R enabled.

0x0003

0x2101

TX_AUDIO_DEVIATION

Configures audio frequency deviation level. Units are in

10 Hz increments. Default is 6285 (68.25 kHz).

0x1AA9

0x2102

TX_PILOT_DEVIATION

Configures pilot tone frequency deviation level. Units are

in 10 Hz increments. Default is 675 (6.75 kHz)

0x02A3

0x2103

TX_RDS_DEVIATION

Si4713 Only. Configures the RDS/RBDS frequency

deviation level. Units are in 10 Hz increments. Default is

2 kHz.

0x00C8

0x2104

TX_LINE_INPUT_LEVEL

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

0x327C

0x2105

TX_LINE_INPUT_MUTE

Sets line input mute. L and R inputs may be indepen-

dently muted. Default is not muted.

0x0000

0x2106

TX_PREEMPHASIS

Configures pre-emphasis time constant.

Default is 0 (75 礢).

0x0000

0x2107

TX_PILOT_FREQUENCY

Configures the frequency of the stereo pilot. Default is

19000 Hz.

0x4A38

0x2200

TX_ACOMP_ENABLE

Enables audio dynamic range control.

Default is 0 (disabled).

0x0002

0x2201

TX_ACOMP_THRESHOLD

Sets the threshold level for audio dynamic range control.

Default is 40 dB.

0xFFD8

0x2202

TX_ACOMP_ATTACK_TIME

Sets the attack time for audio dynamic range control.

Default is 0 (0.5 ms).

0x0000

0x2203

TX_ACOMP_RELEASE_TIME

Sets the release time for audio dynamic range control.

Default is 4 (1000 ms).

0x0004

0x2204

TX_ACOMP_GAIN

Sets the gain for audio dynamic range control.

Default is 15 dB.

0x000F

0x2205 TX_LIMITER_RELEASE_TIME Sets the limiter release time. Default is 102 (5.01 ms)

0x0066

0x2300 TX_ASQ_INTERRUPT_SOURCE

Configures measurements related to signal quality met-

rics. Default is none selected.

0x0000

0x2301

TX_ASQ_LEVEL_LOW

Configures low audio input level detection threshold.

This threshold can be used to detect silence on the

incoming audio.

0x0000

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