AK2346A Datasheet, PDF (19/37 Pages) Asahi Kasei Microsystems – Two-way Radio Audio Processor

ASAHI KASEI
[AK2346A]
2.2) Control Register 2
Address
A3 A2 A1 A0
0
0
0
1
Initial Value
D7
FILSW1
1
D6
FILSW0
1
D5
RXSW
1
Data
D4
D3
LIMSW
TC
1
1
D2
D1
D0
EM
PCONT
SPL
1
1
1
FILSW1 FILSW0
Operation
Notes
1
1 FILTERO pin is mute
0
1 RXLPF circuit signal to FILTERO pin
0
0 TX/RX_HPF circuit signal to FILTERO pin
Note : Do no set the combination of the code which is not defined in the table given above.
Data
Function
Operation
0
1
RXSW RX Audio
mute
Normal operation
LIMSW Limiter
TC
Compressor/
Expander
OFF (bypass)
OFF (bypass)
ON (active)
ON (active)
SPL
Splatter
cut-off frequency
2.55kHz
3.0kHz
Note 5: FILTERO pin cannot be controlled by setting RXSW=0.
Notes
Note 5
EM PCONT
Operation
Notes
1
1
Emphasis : ON (enable) Scrambler : OFF(disable)
0
1
Emphasis : OFF(disable) Scrambler : OFF(disable)
0
0
Emphasis : OFF(disable) Scrambler : ON (enable)
Note : Do no set the combination of the code which is not defined in the table given above.
2.3) Control Register 3
Address
A3 A2 A1 A0
0
0
1
0
Initial Value
Data
D7
D6
D5
D4
D3
D2
0
TXA2PW MSKSW1 MSKSW0 MSKSL FCLN
0
0
1
1
1
1
D1
D0
FSL HPFSW
1
1
MSKSW1 MSKSW0
1
1
MSKCLK pin
High output
Operation
MSKDATA pin
High-Z
Input High or Low
0
1
TX clock (TCLK) is out put TX data (MSKDATA) can be input
from MSKCLK pin.
from MSKDATA pin.
1
0
Rx clock (RCLK) is out put ^{RX data (RDATA) is output from}
from MSKCLK pin.
MSKDATA pin.
0
0
High output
RDF/FD signal is output from
MSKDATA pin.
Select MSK RX flag (RDF) and
input clock to SCLK pin, then Rx
data is output from DIO pin.
MS1289-E-02
- 19 -
Notes
MSK
transmission
:OFF
MSK
transmission
:ON
2012/06