AK2306 Datasheet, PDF (22/38 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER

ASAHI KASEI
[AK2306/LV]
REGISTER MAP
Bit Bit Bit Bit Bit
Bit
Bit
Bit
Bit
Bit
Bit
11 10 9 8
7
6
5
4
3
2
1
A2 A1 A0 *
D7
D6
D5
D4
D3
D2
D1
0 0 0*
0
0
-
GA0R4 GA0R3 GA0R2 GA0R1
0 0 1*
0
0 1 0*
0
0 1 1*
0
1 0 0*
0
1 0 1*
0
1 1 0*
0
-
GA1R4 GA1R3 GA1R2 GA1R1
0
-
GA0T4 GA0T3 GA0T2 GA0T1
0
-
GA1T4 GA1T3 GA1T2 GA1T1
0
MTCH1 MTCH0 PD
PDTN PDCH1
0
0
0
TNFQ ALAWN SEL2B
Reserved
1 1 1*
Reserved
*)Dummy Bit
Note) All registers except address(000 - 011), Bit5(D5) can be read/write.
Note) Please write “all 0’s” for address(000 - 100), Bit7,6(D7,D6) and address(101), Bit7,6,5,4(D7 - D4)
for normal operation.
Note) Address(000 - 011),Bit5(D5) can not be write and “0” data will be output when it is accessed to read.
Bit
0
D0
GA0R0
GA1R0
GA0T0
GA1T0
PDCH0
PCMIF
INITIALIZATION OF REGISTERS
The registers are initialized at POWER ON RESET only.
Power on reset may not be excuted due to the difference of power up time constant. Thus it is highly recommended
that all the register (address(000 – 101) ) are to be written at the time of the power up and after the abnormal circumstances
happens such as micro interrupt of the power line or mal operation due to lightning.
REGISTER FUNCTION
Address Bit
000
0
1
2
3
4
5
6
7
001
0
1
2
3
4
5
6
7
Name
GA0R0
GA0R1
GA0R2
GA0R3
GA0R4
-
0
0
GA1R0
GA1R1
GA1R2
GA1R3
GA1R4
-
0
0
Default
0
1
1
0
0
Function
Receive gain adjustment on ch0
+6 to –18dB by 1.0dB step
00000: +6dB 11xxx: -18dB
0 Test mode
0 Please write all “0”.
0 Receive gain adjustment on ch1
1 +6 to –18dB by 1.0dB step
1
0
00000: +6dB 11xxx: -18dB
0
0 Test mode
0 Please write all “0”.
Refer
MS0093-E-04
22
2001/11