LV24030LP Datasheet, PDF (8/14 Pages) Sanyo Semicon Device – Bi-CMOS IC FM Tuner IC for Small Portable Equipment

LV24030LP
Digital Interface Specification (reference)
• 3-wire bus (For communication line)
Access to the LV24030 is done through the 3-wire bus.
CLOCK
Clock
NR_W
Write/read control
DATA
Data is written into LC24030 when the bidirectional communication line NR_W is H and is read from LV24030 when NR_W is L.
LV24030 has a function to notify occurrence of interruption by means of change in the DATA line.
If interruption is to be made, it is essential that the controller supports interruption by change of the DATA line.
When the timing necessary for frequency measurement cannot be generated from the controller, it is necessary to input
the external clock (oscillator or 32kHz crystal) to the CLK_IN pin of LV24030.
• Register map
Address
Register name
Access
Operation
00h
CHIP_ID
R
Chip identification
01h
NA
-
02h
CNT_L
R
Counter value low byte
03h
FM_OSC
W
DAC control for FM-RF oscillator
04h
AUDIO_CTRL
W
Audio Control
05h
MSRC_SEL
W
Measure source select
06h
CTRL_STAT
R
Control status
07h
RADIO_STAT
R
Radio station status
08h
STEREO_CTRL
W
Stereo Control
09h
FM_CAP
W
RM-RF CAP bank DAC setting
0Ah
PW_SCTRL
W
Power and soft control
0Bh
SD_OSC
W
DAC control for stereo decoder oscillator
0Ch
CNT_CTRL
W
Counter control
0Dh
CNT_STAT
R
Control status
0Eh
IF_OSC
W
DAC control for IF oscillator
0Fh
IF_BW
W
IF Bandwidth
10h
RADIO_CTRL1
W
Radio control 1
11h
CNT_H
R
Counter value high byte
Registers with blank colum are not defined and should not be accessed.
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