SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 26

• Manufacturer Part Number: SI4709-B-GM
• Description: IC FM RADIO TUNER 20-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI4709-B-GM

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

Si4708/09-B
Register 06h. System Configuration 3
Reset value = 0x0000
26
Name SMUTER[1:0] SMUTEA[1:0]
Type
15:14
13:12
Bit
11:9
Bit
7:4
3:0
8
D15
SMUTER[1:0]
SMUTEA[1:0]
SKSNR[3:0]
SKCNT[3:0]
R/W
Reserved
VOLEXT
Name
D14
D13
R/W
Softmute Attack/Recover Rate.
00 = fastest (default).
01 = fast.
10 = slow.
11 = slowest.
Softmute Attenuation.
00 = 16 dB (default).
01 = 14 dB.
10 = 12 dB.
11 = 10 dB.
Reserved.
Always write to zero.
Extended Volume Range.
0 = disabled (default).
1 = enabled.
This bit attenuates the output by 30 dB. With the bit set to 0, the 15 volume settings
adjust the volume between 0 and –28 dBFS. With the bit set to 1, the 15 volume set-
tings adjust the volume between –30 and –58 dBFS.
Refer to 4.5. "Stereo Audio Processing" on page 14.
Seek SNR Threshold.
0000 = disabled (default).
0001 = min (most stops).
1111 = max (fewest stops).
Required channel SNR for a valid seek channel.
Seek FM Impulse Detection Threshold.
0000 = disabled (default).
0001 = max (most stops).
1111 = min (fewest stops).
Allowable number of FM impulses for a valid seek channel.
D12
R/W
D11
0
D10
R/W
Confidential Rev. 1.4
0
R/W
D9
0
VOLEXT
R/W
D8
Function
D7
SKSNR[3:0]
D6
R/W
D5
D4
D3
SKCNT[3:0]
D2
R/W
D1
D0