Data Sheet

Si4702/03-C19
Rev. 1.1 25
Reset value = 0x0000
7 Reserved Reserved.
Always write to 0.
6 DISABLE Powerup Disable.
Refer to “4.9. Reset, Powerup, and Powerdown”.
Default = 0.
5:1 Reserved Reserved.
Always write to 0.
0 ENABLE Powerup Enable.
Refer to “4.9. Reset, Powerup, and Powerdown”.
Default = 0.
Register 03h. Channel
Bit D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
Name TUNE 0 0 0 0 0 CHANNEL[9:0]
Type R/W R/W R/W R/W R/W R/W R/W
Bit Name Function
15 TUNE 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.
14:10 Reserved Reserved.
Always write to 0.
9:0 CHAN[9:0] Channel Select.
Channel value for tune operation.
If BAND 05h[7:6] = 00, then Freq (MHz) = Spacing (MHz) x Channel + 87.5 MHz.
If BAND 05h[7:6] = 01, BAND 05h[7:6] = 10, then
Freq (MHz) = Spacing (MHz) 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].
Bit Name Function