MT9092
Receive Gain Control Register
ADDRESS = 1Dh WRITE/READ VERIFY
Power Reset Value
0000 0000
-
AUTO
6
B5
5
B4
4
B3
3
B2
2
B1
1
B0
7
0
AUTO
B5-B0
When high autonulling of the transmit PCM is enabled. When low, autonulling is disabled. This bit is used in conjunction with
the PS2 - PS0 bits of the DSP Control Register at address 1Eh.
These 6 bits (indicated below in hexadecimal) are decoded to control Rx pcm gain:
B5-B0
Gain Setting (dB)
B5-B0
Gain Setting (dB)
3F
3E
3D
3C
3B
3A
39
38
37
36
35
34
33
32
31
30
2F
2E
2D
2C
2B
2A
29
28
27
26
25
24
23
22
21
20
+22.5
+21.0
+19.5
+18.0
+16.5
+15.0
+13.5
+12.0
+10.5
+9.0
1F
1E
1D
1C
1B
1A
19
18
17
16
15
14
13
12
11
-25.5
-27.0
-28.5
-30.0
-31.5
-33.0
-34.5
-36.0
-37.5
-39.0
-40.5
-42.0
-43.5
-45.0
-46.5
-48.0
-49.5
-51.0
-52.5
-54.0
-55.5
-57.0
-58.5
-60.0
-61.5
-63.0
-64.5
-66.0
-67.5
-69.0
-70.5
-72.0
+7.5
+6.0
+4.5
+3.0
+1.5
+0.0
10
0F
0E
0D
0C
0B
0A
09
08
07
06
05
04
03
02
01
00
-1.5
-3.0
-4.5
-6.0
-7.5
-9.0
-10.5
-12.0
-13.5
-15.0
-16.5
-18.0
-19.5
-21.0
-22.5
-24.0
Note: B0-B5 of addresses 20h and 21h are encoded in the same manner
Note: Bits marked "-" are reserved bits and should be written with logic "0".
7-29
MITEL [ MITEL NETWORKS CORPORATION ]
