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MFC2000 Datasheet(PDF) 360 Page - List of Unclassifed Manufacturers

Part # MFC2000
Description  Multifunctional Peripheral Controller 2000
PDF  426 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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MFC2000 Datasheet(HTML) 360 Page - List of Unclassifed Manufacturers

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MFC2000 Multifunctional Peripheral Controller 2000
Hardware Description
20-2
Conexant
100723A
Ad dr e ss
D e coder
Be ll P h a se L o g ic
A[3 :0 ]
CS ,R /W
12 5 µsC lk
re sn
BellPe riod Reg
D[3 :0]
D[4 :0 ]
BellC trl Reg
D[3 :0 ]
AL T To n e
fr om A L T T on e G en
A L T T on eE n b
To A L T T on e G en
Be ll/R in g er
Figure 20-2. Bell/Ringer Block Diagram
Table 20-1. Bell/Ringer Setting
BellPeriod+1
Bell/Ringer
Freq(Hz)
BellPeriod+1
Bell/Ringer
Freq(Hz)
1
500
17
29.4
2
250
18
27.8
3
166.7
19
26.3
4
125
20
25
5
100
21
23.8
6
83.3
22
22.7
7
71.4
23
21.7
8
62.5
24
20.8
9
55.6
25
20
10
50
26
19.2
11
45.5
27
18.5
12
41.7
28
17.9
13
38.5
29
17.2
14
35.7
30
16.7
15
33.3
31
16.1
16
31.2
32
15.6



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