ASAHI KASEI
[AK2346B]
13. Serial Interface Configuration
1) Register Configuration
Address
Function
A2 A1 A0
Data
D7
D6
D5
BS1
TC
D4
TXRX
EM
D3
D2
D1
D0
BS3
BS2
TXSW2 TXSW1 RXSW
FSL
0
0
0
0
1
1
1
1
-
0
0
1
1
0
0
1
1
-
0
1
0
1
0
1
0
1
-
Control register 1
Control register 2
Volume register 1
Volume register 2
Volume register 3
MODEM register 1
MODEM register 2
Test register
PCONT
SPL
MSKSL
VR11
VR21
VR41
FCLN
VR10
VR20
VR40
-
-
-
-
-
VR12
VR22
VR42
-
-
-
-
-
VR25
VR32
VR24
VR31
VR23
VR30
VR33
Lower 8 bit of MODEM Flame pattern
Upper 8 bit of MODEM Flame pattern
TST7
TST6
TST5
TST4
TST3
TST2
TST1
TST0
MODEM Receive data
MODEM register 3
2) Register Map
2.1) Control Register 1
Address
Data
A2
0
A1
0
A0
0
D7
BS3
0
D6
D5
BS1
0
D4
TXRX
1
D3
D2
D1
D0
FSL
1
BS2
0
TXSW2 TXSW1 RXSW
Reset
1
1
1
2.1.1) Operation mode setting
BS3
BS2
BS1
Mode
OSC, AGND
TX, RX, Audio
MODEM
0
0
0
Mode0
Mode1
Mode2
Mode3
Mode4
OFF
ON
ON
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
0
0
1
0
1
0
0
1
1
OFF
ON
1
0/1
0/1
ON
2.1.2) TX, RX Setting
Data Function
Operation
Notes
0
1
TX Operation
Note 1
RX Operation
TXRX TX, RX Switch
RXSW RX Audio
Note 2
Note 3
Note 4
Mute
Active
FSL
RDF/FD Switch
FD enable
RDF enable
2.1.3) TX audio path setting
TXSW2 TXSW1
Notes
Operation
0
0
1
1
0
1
0
1
External Tone Operation (EXTLIMIN --- Limiter --- Splatter)
MODEM Operation
Audio Operation
Mute
(MSK Modulator --- Splatter)
(HPF --- Limiter --- Splatter)
(AGND --- Limiter --- Splatter)
MS1409-E-00
2012/05
- 15 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
