LV24250LS Datasheet, PDF (14/18 Pages) Sanyo Semicon Device – Compact Portable Equipment 1-Chip FM Tuner IC

LV24250LS
Register 1Dh – SCN_CTRL – Scan control (Read/Write)
7
6
5
4
3
2
1
GRID [1 : 0]
FLL_ON
FLL_MODE
FS [2 : 0]
bit 7-6 :
GRID [1 : 0] : FM station search frequency interval :
0 = IFSD set
1 = 50kHz grid
2 = 100kHz grid
3 = 200kHz grid
bit 5 :
FLL_ON : FLL Control
0 = FLL OFF
1 = FLL ON
During setting of the FM frequency and during seek, keep this OFF. Turn it ON after tuning.
bit 4 :
Reserved : 0 (Fix)
However, '1' is set when capacity is added to 16pin, and it uses it as Smoothing Filter(FLL_LPF).
bit 3-1 :
FS [2 : 0] : Field strength setting at the time of FM station search and a frequency adjustment bit
Set 1 for setting of IFSD.
bit 0 :
SHF5DB : Scan stop level +5dB
0
SHF5DB
Register1Eh – 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 8 bit :
Tuning frequency or Limit Frequency for FM Station Search
Register 1Fh – 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 :
Target value of oscillator calibration, Tuning frequency value or limit frequency value for station search
Note : GRID [1 : 0] is not 0 TARGET [15 : 14] has different definition
With radio power ON, lower eight bits of the target frequency are set. Then, set higher eight bits of the target frequency to this register. The command is
executed.
No.A1699-14/18