SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 23

• 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 04h. System Configuration 1
Reset value = 0x0000
Name
Type
Bit
9:8
7:6
5:4
15
14
13
12
11
10
Bit
BLNDADJ[1:0] Stereo/Mono Blend Level Adjustment.
RDSIEN
D15
Reserved
Reserved
Reserved
R/W
RDSIEN
STCIEN
AGCD
Name
RDS
DE
STCIEN
D14
R/W
RDS Interrupt Enable (Si4709 only).
0 = Disable Interrupt (default).
1 = Enable Interrupt.
Setting RDSIEN = 1 and GPO[1:0] = 01 will generate a 5 ms low pulse on GPO when the
RDSR 0Ah[15] bit is set.
Seek/Tune Complete Interrupt Enable.
0 = Disable Interrupt (default).
1 = Enable Interrupt.
Setting STCIEN = 1 and GPO[1:0] = 01 will generate a 5 ms low pulse on GPO when the
STC 0Ah[14] bit is set.
Reserved.
Always write to 0.
RDS Enable (Si4709 only).
0 = Disable (default).
1 = Enable.
De-emphasis.
0 = 75 µs. Used in USA (default).
1 = 50 µs. Used in Europe, Australia, Japan.
AGC Disable.
0 = AGC enable (default).
1 = AGC disable.
Reserved.
Always write to 0.
Sets the RSSI range for stereo/mono blend.
00 = 31–49 RSSI dBµV (default).
01 = 37–55 RSSI dBµV (+6 dB).
10 = 19–37 RSSI dBµV (–12 dB).
11 = 25–43 RSSI dBµV (–6 dB).
ST bit set for RSSI values greater than low end of range.
Reserved.
Always write to 10.
D13
R/W
0
D12
RDS
R/W
D11
R/W
DE
AGCD
D10
R/W
Confidential Rev. 1.4
R/W
D9
0
R/W
D8
0
Function
BLNDADJ[1:0]
D7
R/W
D6
R/W
D5
0
R/W
D4
0
Si4708/09-B
D3
GPO[1:0]
R/W
D2
R/W
D1
0
R/W
D0
0
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