SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 22

• 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 03h. Channel
Reset value = 0x0000
22
Name TUNE
Type
14:10
Bit
5:1
Bit
Bit
9:0
7
6
0
15
R/W
D15
Reserved
DISABLE
Reserved
ENABLE
CHAN[9:0]
Reserved
Name
Name
TUNE
R/W R/W R/W R/W R/W
D14
0
D13
0
Reserved.
Always write to 0.
Powerup Disable.
Refer to “4.9. Reset, Powerup, and Powerdown”.
Default = 0.
Reserved.
Always write to 0.
Powerup Enable.
Refer to “4.9. Reset, Powerup, and Powerdown”.
Default = 0.
Tune.
0 = Disable (default).
1 = Enable.
The tune operation begins when the TUNE bit is set high. The STC bit is set high
when the tune operation completes. The STC bit must be set low by setting the TUNE
bit low before the next tune or seek may begin.
Reserved.
Always write to 0.
Channel Select.
Channel value for tune operation.
If BAND 05h[7:6] = 00, then Freq (MHz) = Spacing (kHz) x Channel + 87.5 MHz.
If BAND 05h[7:6] = 01, BAND 05h[7:6] = 10, then
Freq (MHz) = Spacing (kHz) x Channel + 76 MHz.
CHAN[9:0] is not updated during a seek operation. READCHAN[9:0] provides the
current tuned channel and is updated during a seek operation and after a seek or
tune operation completes. Channel spacing is set with the bits SPACE 05h[5:4].
D12
0
D11
0
D10
0
Confidential Rev. 1.4
D9
D8
D7
Function
Function
D6
CHANNEL[9:0]
D5
R/W
D4
D3
D2
D1
D0