SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 25

• 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

Register 05h. System Configuration 2
Reset value = 0x0000
Name
Type
15:8
Bit
Bit
7:6
5:4
3:0
D15
VOLUME[3:0]
SEEKTH[7:0]
SPACE[1:0]
BAND[1:0]
Name
D14
D13
SEEKTH[7:0]
RSSI Seek Threshold.
0x00 = min RSSI (default).
0x7F = max RSSI.
SEEKTH presents the logarithmic RSSI threshold for the seek operation. The
Si4708/09 will not validate channels with RSSI below the SEEKTH value. SEEKTH is
one of multiple parameters that can be used to validate channels. For more informa-
tion, see "AN349: Si4708/09 Programming Guide."
Band Select.
00 = 87.5–108 MHz (US/Europe, Default).
01 = 76–108 MHz (Japan wide band).
10 = 76–90 MHz (Japan).
11 = Reserved.
Channel Spacing.
00 = 200 kHz (USA, Australia) (default).
01 = 100 kHz (Europe, Japan).
10 = 50 kHz.
Volume.
Relative value of volume is shifted –30 dBFS with the VOLEXT 06h[8] bit.
VOLEXT = 0 (default).
0000 = mute (default).
0001 = –28 dBFS.
:
:
1110 = –2 dBFS.
1111 = 0 dBFS.
VOLEXT = 1.
0000 = mute.
0001 = –58 dBFS.
:
:
1110 = –32 dBFS.
1111 = –30 dBFS.
FS = full scale.
Volume scale is logarithmic.
D12
R/W
D11
D10
Confidential Rev. 1.4
D9
D8
BAND[1:0] SPACE[1:0]
D7
R/W
Function
D6
D5
R/W
D4
Si4708/09-B
D3
VOLUME[3:0]
D2
R/W
D1
D0
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