LV23411V Datasheet, PDF (18/23 Pages) Sanyo Semicon Device – For Home Stereo Systems FM/AM Tuner IC

LV23411V
Register 18h - RADIO_CTRL1 - Radio control 1 (Read/Write)
7
6
5
4
3
2
1
IQC_CTR IFPOL
OSC_LEV[1:0]
DEEM
VOL[1:0]
Bit 7 :
IQC_CTR : I/Q phase change
0 = Normal mode (Upper heterodyne)
1 = I/Q phase change : for image signal avoidance (Lower heterodyne)
Note : Usually, no-need to change
Bit 6 :
IF pole change by State Machine
0 = The IF frequency is added to local frequency (Normal)
1 = The IF frequency is subtracted from local frequency
Note : Usually, no-need to change
Bit 5-4 :
OSC_LEV[1:0] : RF-OSC oscillation level setting
0 = minimum level
3 = maximum level
Note : 3dB steps, Level = 2 is recommended
Bit 3 :
DEEM : De-emphasis setting
0 = 50μs : Korea China, Europe, Japan
1 = 75μs : USA
Bit 2-1 :
VOL[1:0] : Volume setting
0 = minimum (VOL0)
……
3 = maximum (VOL3)
Bit 0 :
EN_AMHC : AM High-cut Filter ON/OFF
0 = AM HCF OFF
1 = AM HCF ON
Register 19h - RADIO_CTRL2 - Radio control 2 (Read/Write)
7
6
5
4
3
Reserved
Reserved
EN_AMM Reserved IF_AGC_LEV
Bit 7 :
Reserved : Fixed to “0”
2
1
RF_AGC_LEV[1:0]
Bit 6 :
Reserved : Fixed to “1”
Bit 5 :
EN_AMM : AM Mute ON/OFF
0 = AM mute OFF
1 = AM mute ON
Bit 4 :
Reserved : Fixed to “0”
Bit 3 :
IF_AGC_LEV : IF-AGC Level Control
0 = AGC slow mode
1 = AGC first mode
Bit 2-1 :
RF_AGC_LEV[1:0] : RF-AGC Level Control
0 = AGC slow mode
1 = AGC normal mode
3 = AGC first mode
Bit 0 :
EN_RFAGC : RF-AGC ON/OFF
0 = AGC OFF
1 = AGC ON (Normal)
0
EN_AMHC
0
EN_RFAGC
No.A1990-18/23