AK2346A Datasheet, PDF (18/37 Pages) Asahi Kasei Microsystems – Two-way Radio Audio Processor

ASAHI KASEI
[AK2346A]
2) Register Map
2.1) Control Register 1
Address
Data
A3 A2 A1 A0 D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
BS3
BS2
BS1 TXRX TXINSW TXSW2 TXSW1 TXSW0
Initial Value
0
0
0
1
1
1
1
1
2.1.1) Operation mode setting
BS3
BS2
BS1
Mode
OSC,AGND
TX, RX, Audio
Modem
0
0
0
Mode0(power OFF)
OFF
OFF
OFF
0
0
1
Mode1(Standby)
ON
OFF
OFF
0
1
0
Mode2
ON
ON
OFF
0
1
1
Mode3
ON
OFF
ON
1
0
0
Mode4
ON
ON
ON
Note : Do no set the combination of the code which is not defined in the table given above.
2.1.2) TX, RX Setting
Data
Function
TXRX TX, RX Switch
TXINSW TX Signal
Operation
0
1
TX Operation
Note 1
RX Operation
Note 2
TXA1+TXA2 Operation
TXA1 Operation
Notes
Note 3
Note 4
2.1.3) TX audio path setting
TXSW2 TXSW1 TXSW0
TX Audio
Modem
EXTINO Signal EXTIN2 Signal
1
1
1
OFF
OFF
OFF
OFF
1
1
0
ON
OFF
OFF
OFF
1
0
1
OFF
ON
OFF
OFF
1
0
0
ON
OFF
ON
OFF
0
1
1
ON
OFF
OFF
ON
0
1
0
OFF
OFF
ON
OFF
0
0
1
OFF
OFF
OFF
ON
Note : Do no set the combination of the code which is not defined in the table given above.
Note 1: TXIN to RXOUT path is available by setting TXRX=0 and RXSW=1 in register.
However, Scrambler/Descrambler circuit does not work properly on this setting, so please set
PCONT=1 (disable). To set RXSW=0 makes RXOUT pin mute in operation.
Note 2: RXIN to MOD path is available by setting
TXRX=1 and TXSW2/TXSW1/TXSW0=1/1/0 in register.
However, Scrambler/Descrambler circuit does not work properly on this setting, so please set
PCONT=1 (disable). To set TXSW2/TXSW1/TXSW0=1/1/1 makes MOD pin mute in operation.
Note 3: Please set a gain level properly in each circuit block according to level diagram in page 16.
Note 4: In case of TXA1+TXA2 Operation (TXINSW=0),
please set the register to other than TXSW2/TXSW1/TXSW0=1/0/0 nor
TXSW2/TXSW1/TXSW0=0/1/0
MS1289-E-02
- 18 -
2012/06