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SI4740

Si470X/1X/2X/3X/4X EVALUATION BOARD TEST PROCEDURE

Silicon Laboratories 

AN388

2.2. FM Tuner Configuration

2.2.1. Si4700/01/02/03/08/09 Standard Configuration

1. Set frequency = 98.1 MHz.

2. Set mono = On.

3. Set AGC = On.

4. Set volume = 0xF.

5. Set de-emphasis = 75 µs.

6. Set soft mute = Off.

2.2.2. Si4704/05/2x/3x/4x Standard Configuration

1. Set frequency = 98.1 MHz.

2. Set stereo blend mono threshold = 127.

3. Set stereo blend stereo threshold = 127.

4. Set AGC override = Off.

5. Set volume = 63.

6. Set de-emphasis = 75 µs.

7. Set soft mute attenuation = 0.

8. Set soft mute SNR threshold = 0.

2.2.3. Other FM Tuner Settings

Tuner Setting

Set RDS On

Set AGC Off

Set Stereo Mode

Table 3. FM Tuner Settings

Si4700/01/02/03

Si4704/05/2x/3x/4x

Set RDS = On

Set RDS State = On

Set AGC = Off

Set AGC Override = On

Set Mono = Off

Set Stereo Blend Mono Threshold = 0

Set Stereo Blend Stereo Threshold = 0

10

Rev. 0.2

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