LV24100LP Datasheet, PDF (10/18 Pages) Sanyo Semicon Device – Bi-CMOS IC FM and AM Tuner IC for Small Portable Equipment

LV24100LP
Register Description
Block x, Register 01h-BLK_SEL-Block Select Register(Write only)
7
6
5
4
3
2
BN[7:0]
Bit 7-0:
BN[7:0]: 8-bit block number. For LV24100, the following numbers are valid:
01h.
02h.
03h.
Note: This register can be accessed from any block
Block 1, Register 00h-CHIP_ID-Chip Identify Register(Read only)
7
6
5
4
3
2
ID[7:0]
Bit 7-0:
ID[7:0]: 8-bit chip ID.
For LV24100, value 7 should be read
Block 1, Register 02h-MSRC_SEL-Measurement Source Select Register(Write-only)
7
6
5
4
3
2
MSR_O
AFC_LVL
AFC_SPD
MSS_RF16
MSS_AM
MSS_SD
Bit 7:
MSR_O: Output measure source to DATA-pin
0 = Measuring source not available at DATA-pin (normal operation).
1 = Measuring source available at DATA-pin (test mode).
Bit 6:
AFC_LVL: AFC trigger level
0 = AFC is always active (trigger at 0dBμV)
1 = AFC is only active when field strength is above 20dBμV
Bit 5:
AFC_SPD: AFC speed
0 = AFC adjusts with 3Hz speed
1 = AFC adjusts with 8kHz speed (test mode)
Bit 4:
MSS_RF16: RF/16 measurement.
0 = Disable RF/16 oscillator measurement
1 = Enable RF/16 oscillator measurement
Bit 3:
MSS_AM: AM antenna frequency measurement.
0 = Disable AM antenna measurement
1 = Enable AM antenna measurement
Bit 2:
MSS_SD: Stereo decoder oscillator measurement
0 = Disable stereo decoder oscillator measurement
1 = Enable stereo decoder oscillator measurement
Bit 1:
MSS_FM: FM RF oscillator measurement
0 Disable FM RF oscillator measurement
1 = Enable FM RF oscillator measurement
Bit 0:
MSS_IF: IF oscillator measurement
0 = Disable IF oscillator measurement
1 = Enable IF oscillator measurement
Note: Only one of the measurement source MSS_xx bits may be set at a time.
The FM RF frequency is divided by 256 or 16 before it goes to the measuring circuitry.
Block 1, Register 03h-FM_OSC-FM RF Oscillator Register(Write-only)
7
6
5
4
3
2
FMOSC[7:0]
Bit 7-0:
FMOSC[7:0]: DAC value to control the FM RF oscillator (fine step)
Note: Positive DAC control (i.e. the frequency increases with the register’s value)
See also FM_CAP register
Block 1, Register 04h-SD_OSC-Stereo Decoder Oscillator Register(Write-only)
7
6
5
4
3
2
SDOSC[7:0]
Bit 7-0:
SDOSC[7:0]: DAC value to control the stereo decoder oscillator
Note: Positive DAC control(i.e. the frequency increases with the register’s value)
1
1
1
MSS_FM
1
1
0
0
0
MSS_IF
0
0
No.A0194-10/18