Datasheet

RDA Microelectronics, Inc. RDA5807M FM Tuner V1.1
The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in whole or in
part without prior written permission of RDA.
Page 9 of 22
REG BITS NAME FUNCTION DEFAULT
0 ENABLE
Power Up Enable.
0 = Disabled; 1 = Enabled
0
03H 15:6 CHAN[9:0]
Channel Select.
BAND = 0
Frequency =
Channel Spacing (kHz) x CHAN+ 87.0 MHz
BAND = 1or 2
Frequency =
Channel Spacing (kHz) x CHAN + 76.0 MHz
BAND = 3
Frequency =
Channel Spacing (kHz) x CHAN + 65.0 MHz
CHAN is updated after a seek operation.
0x00
5 DIRECT MODE
Directly Control Mode, Only used when test.
0
4 TUNE Tune
0 = Disable
1 = Enable
The tune operation begins when the TUNE bit
is set high. The STC bit is set high when the
tune operation completes.
The tune bit is reset to low automatically when
the tune operation completes..
0
3:2 BAND[1:0] Band Select.
00 = 87–108 MHz (US/Europe)
01 = 76–91 MHz (Japan)
10 = 76–108 MHz (world wide)
11
1
00
= 65 –76 MHz
（
East Europe
）
or 50-65MHz
1:0 SPACE[1:0] Channel Spacing.
00 = 100 kHz
01 = 200 kHz
10 = 50kHz
11 = 25KHz
00
04H 15 RSVD Reserved
0
13:12 RSVD Reserved
00
11 DE
De-emphasis.
0 = 75 µs; 1 = 50 µs
0
10 RSVD
Reserved
9 SOFTMUTE_EN If 1, softmute enable
1
8 AFCD AFC disable.
If 0, afc work;
If 1, afc disabled.
0
05H 15 INT _MODE If 0, generate 5ms interrupt;
If 1, interrupt last until read reg0CH action
occurs.
1
1
If 0x07h_bit<9> ( band )=1, 65-76MHz; =0, 50-76MHz