AK2365 Datasheet, PDF (19/31 Pages) Asahi Kasei Microsystems – dPMR Filterless IF LSI

[AK2365]
2) Description of registers
Address 0x01 (Control Register 1)
Name
D7(MSB) D6
D5
Control Register 1
BS[2:0]
Initial Value
0
1
0
D4
BAND
0
D3
D2
BPF_BW[1:0]
0
0
D1 D0(LSB)
LOFREQ[1:0]
0
1
BS[2:0]: Operation mode setting
PDN
pin
BS[2]
BS[1]
BS[0]
Mode
name
LDOD
LDOA,
AGNDIN
Mode 0
0
-
-
-
(Power- OFF OFF
down)
Mode 1
1
0
0
1 (Standby ON OFF
1)
Mode 2
1
0
1
0 (Standby ON ON
2)
1
0
1
1 Mode 3 ON ON
VREF
OFF
OFF
OFF
ON
MIX
AGC,
BPF,
Divider
OFF
IFBUF
OFF
OFF OFF
OFF
OFF
OFF
OFF
Limiter,
RSSI
OFF
OFF
OFF
OFF
1
1
0
0 Mode 4 ON ON
ON
ON
ON
OFF
1
1
0
1 Mode 5 ON ON
ON
ON
ON
ON
1
1
1
0 Mode 6 ON ON
ON
ON OFF
ON
1
1
1
1 Mode 7 ON ON
ON
ON
ON
ON
Note: Do no set the combination of the code which is not defined in the table given above.
DISCRI,
Noise
Squelch
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
BAND：Demodulated signal level setting
BAND
Function
0
Narrow
1
Wide
Note1: When {BAND} register is set to “0”, demodulated signal level at AUDIOOUT pin, when input
signal is Δf=±1.5kHz dev, is 100mVrms typ. When {BAND} register is set to “1”, demodulated signal
level at AUDIOOUT pin, when input signal is Δf=±3.0kHz dev, is 100mVrms typ.
BPF_BW[1:0]: BPF band width setting
BPF_BW
BPF_BW
BPF_BW
[2]
[1]
[0]
1
0/1
0/1
0
0
0
0
0
1
0
1
0
0
1
1
name
F0
F1
F2
F3
F4
6dB
attenuation
±7.5kHz
±6kHz
±4.5kHz
±3kHz
±2kHz
Attenuation
band width
±15kHz
±12.5kHz
±11kHz
±9kHz
±7.5kHz
MS1453-E-01
- 19 -
2012/10