LV23401V_11 Datasheet, PDF (21/24 Pages) Sanyo Semicon Device – For Home Stereo System 1-chip Tuner IC Incorporating PLL

LV23401V
Register 1Fh – RADIO_XTRL5 – Radio control 5 (Read/Write)
7
6
5
4
3
2
1
RF_SEL
IFRIM
nAGC_SPD
SE_FM/AM
AMP_CTR
MUTE
NA
Bit 7 :
RF_SEL : RF frequency range setting
0 = Normal (Japan / USA / Europe)
1 = Eastern Europe (65MHz to 74MHz)
0
PW_RAD
Bit 6 :
IFRIM : IF oscillator limit setting
0 : Max = 350kHz (FM mode)
1 : Max =150kHz (AM mode)
Bit 5 :
nAGC_SPD : IF AGC speed setting
0 = Hi speed (FM mode)
1 = Normal (AM mode)
Bit 4 :
SE_FM/AM : AM/FM mode select
0 = FM mode
1 = AM mode
Bit 3 :
AMP_CTR : Audio amplifier ON/OFF
0 = OFF
1 = ON
Bit 2 :
MUTE : Audio mute function ON/OFF
0 = Mute ON
1 = Mute OFF
Bit 1 :
AM_CAL : AM calibration (Oscillation mode)
0 = AM calibration impropriety (Operational usually)
1 = AM calibration mode (AM antenna frequency setting time)
Note : Set this bit to "1" when you measure the frequency of the AM antenna.
Bit 0 :
PW_RAD : Radio circuit power
0 = Power OFF (Power save)
1 = Power ON
* 1 : After the VCC voltage is impressed, PW_RAD of Register 1Fh_bit0 is automatically set to "0" in 50ms.
* 2 : When the VCC voltage is dropped once, content of registers other than PW_RAD becomes irregular.
* 3 : The content of the register change set at the power save becomes effective, and any command processing cannot be executed.
* 4 : The standby time of 1200ms is necessary, the circuit with stability (PW_RAD = 0 → 1) after the power save returns.
* 5 : Tune RF again after the power save returns.
* 6 : A built-in each oscillator including the RF bureau departure and all other analogue part circuit operation stop at the power save.
* 7 : The standby time of 200ms is necessary after the switch of the band to AM before counting IF after adjusting the first RF.
No.A1746-21/24