AK2306 Datasheet, PDF (13/38 Pages) Asahi Kasei Microsystems – Dual PCM CODEC for ISDN/VoIP TERMINAL ADAPTER

ASAHI KASEI
[AK2306/LV]
GAIN ADJUSTMENT
Analog input/output gain can be adjusted at the range from +6dB to –18dB by 1.0dB step through CPU register.
VR Register( Address:011 –000 Bit:4 –0)
GanT4 GanT3 GAnT2 GAnT1
GanR4 GanR3 GAnR2 GAnR1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
1
0
0
0
1
0
0
0
1
1
0
0
1
1
0
1
0
0
0
1
0
0
0
1
0
1
0
1
0
1
0
1
1
0
0
1
1
0
0
1
1
1
0
1
1
1
1
0
0
0
1
0
0
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
1
1
---
---
GAnT0
GAnR0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
---
Gain
[dB]
+6
+5
+4
+3
+2
+1
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
-10
-11
-12
-13
-14
-15
-16
-17
-18
Remarks
Default
MS0093-E-04
13
2001/11