mt9092apr1 Zarlink Semiconductor, mt9092apr1 Datasheet - Page 31

• Manufacturer Part Number: mt9092apr1
• Description: Fully Featured Digital Telephone Circuit With Embedded Hdlc Transceiver And Dsp For Tone Generations And Hands Free Operation
• Manufacturer: Zarlink Semiconductor

Note: Bits marked "-" are reserved bits and should be written with logic "0".
Receive Gain Control Register
AUTO
B5-B0
Note: B0-B5 of addresses 20h and 21h are encoded in the same manner
When high autonulling of the transmit PCM is enabled. When low, autonulling is disabled. This bit is used in conjunction with the PS2 -
These 6 bits (indicated below in hexadecimal) are decoded to control Rx pcm gain:
PS0 bits of the DSP Control Register at address 1Eh.
-
7
AUTO
B5-B0
3D
3A
2D
2A
3E
3C
3B
2E
2C
2B
6
3F
39
38
37
36
35
34
33
32
31
30
2F
29
28
27
26
25
24
23
22
21
20
B5
5
Gain Setting (dB)
B4
4
+22.5
+21.0
+19.5
+18.0
+16.5
+15.0
+13.5
+12.0
+10.5
-10.5
-12.0
-13.5
-15.0
-16.5
-18.0
-19.5
-21.0
-22.5
-24.0
+9.0
+7.5
+6.0
+4.5
+3.0
+1.5
+0.0
-1.5
-3.0
-4.5
-6.0
-7.5
-9.0
Zarlink Semiconductor Inc.
B3
3
MT9092
31
B2
2
B5-B0
B1
1D
1A
0D
0A
1E
1C
1B
0E
0C
0B
1F
19
18
17
16
15
14
13
12
11
10
0F
09
08
07
06
05
04
03
02
01
00
1
ADDRESS = 1Dh WRITE/READ VERIFY
B0
0
Gain Setting (dB)
-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
Power Reset Value
0000 0000
Data Sheet