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AM79C30AVC датащи(PDF) 28 Page - Advanced Micro Devices

номер детали AM79C30AVC
подробное описание детали  Digital Subscriber Controller??(DSC?? Circuit
PDF  101 Pages
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производитель  AMD [Advanced Micro Devices]
домашняя страница  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C30AVC датащи(HTML) 28 Page - Advanced Micro Devices

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Am79C30A/32A Data Sheet
Programmable Gain Coefficients
The GER, GR, GX, and Sidetone gain coefficients are each 16 bits in length. Two consecutive register locations
correspond to one gain coefficient. The LSB is transferred first to (or from) the microprocessor. Sample coefficients
for the GER filter are listed in Table 24. The gain values are rounded off to the nearest 0.1 dB.
Note:
The coefficient 0008 provides an attenuation of infinity when GER gain is enabled.
Table 24.
GER Gain Coefficients
Gain (dB)
Hex Code
Gain (dB)
Hex Code
MSB
LSB
MSB
LSB
–10
AA
AA
4.0
31
DD
–9.5
9B
BB
4.5
44
1F
–9.0
79
AC
5.0
43
1F
–8.5
09
9A
5.5
33
1F
–8.0
41
99
6.0
40
DD
–7.5
31
99
6.5
11
DD
–7.0
9C
DE
7.0
44
0F
–6.5
9D
EF
7.5
41
1F
–6.0
74
9C
8.0
31
1F
–5.5
54
9D
8.5
55
20
–5.0
6A
AE
9.0
10
DD
–4.5
AB
CD
9.5
42
11
–4.0
AB
DF
10.0
41
0F
–3.5
74
29
10.5
11
1F
–3.0
64
AB
11.0
60
0B
–2.5
6A
FF
11.5
00
DD
–2.0
2A
BD
12.0
42
10
–1.5
BE
EF
12.5
40
0F
–1.0
5C
CE
13.0
11
0F
–0.5
75
CD
13.4
22
10
0.0
00
99
14.0
72
00
0.5
55
4C
14.5
42
00
1.0
43
DD
15.0
21
10
1.5
33
DD
15.5
10
0F
2.0
52
EF
15.9
22
00
2.5
77
1B
16.6
11
10
3.0
55
42
16.9
00
0B
3.5
41
DD
17.5
21
00
18.0
00
0F



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