LV23401V_11 Datasheet, PDF (18/24 Pages) Sanyo Semicon Device – For Home Stereo System 1-chip Tuner IC Incorporating PLL

LV23401V
Register 15h – REF_CLK_DIV – Reference clock divider (Read/Write)
7
6
5
4
3
2
1
0
REFDIV[7:0]
Bit 7 – 0 :
REFDIV[7:0] : Standard clock divider
0 : Rate of dividing frequency = 1
1 : Rate of dividing frequency = 2
•••
255 : Rate of dividing frequency =256
Register 16h – TARGET_VAL_L – Target Value Low Register (Read/Write)
7
6
5
4
3
2
1
0
TARGET[7:0]
Bit 7 – 0 :
TARGET[7:0] : Target Frequency Low 8bit : Targeted value of radio tuning and oscillator adjustment : Low byte
Register 17h – TARGET_VAL_H – Target Value High Register (Read/Write)
7
6
5
4
3
2
1
0
TARGET[15:8]
Bit 7 – 0 :
TARGET[15:8] : Target Frequency High 8 bit : Targeted value of radio tuning and oscillator adjustment : High byte
Note : When subordinate position 8bit of the frequency of the target is set when it is on, and high rank of the frequency of the target 8bit is set
to this register afterwards, the command is executed as for the radio power.
TUNEPOS and TARGET :
- 1kHz interval at AM
- 10kHz interval at FM
Register 18h – RADIO_CTRL1 – Radio control 1 (Read/Write)
7
6
5
4
3
IQC_CTR
IFPOL
OSC_LEV[1:0]
DEEM
Bit 7 :
IQC_CTR : I/Q phase conversion
0 = Operational mode usually (Upper heterodyne)
1 = I/Q phase conversion : Image measures (Lower heterodyne)
Note : When the local is switched as an image measures, it uses it.
2
1
VOL[1:0]
0
EN_AMHC
Bit 6 :
IF polarity conversion in State Machine.
0 = The IF frequency is added to a local frequency. (Operational usually)
1 = The IF frequency is subtracted by a local frequency. (Image measures)
Bit 5 – 4 :
OSC_LEV[1:0] : RF-OSC oscillation level setting
0 = Minimum oscillation level
3 = Maximum oscillation level
* A possible level adjustment and "2" are assumed to be a recommended value at each interval of 3dB.
Bit 3 :
DEEN : De-emphasis time constant switch
0 = 50μs : Japan, South Korea, China, and Europe
1 = 75μs : The United States
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 hi-cut filter function OFF
1 = AM hi-cut filter function ON
No.A1746-18/24