參數(shù)資料
型號(hào): KS16114
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 9600/14400 bps FAX MODEM
中文描述: 14400分之9600基點(diǎn)傳真調(diào)制解調(diào)器
文件頁(yè)數(shù): 50/69頁(yè)
文件大?。?/td> 513K
代理商: KS16114
KS16112/4
9600/14400 bps FAX MODEM
-
50
-
The output of the threshold comparator controls the interface memory bits TD 1, TD 2, and TD3. The bits are
set if the output of the energy averaging filter is equal to or greater than 1/8 of full scale. Otherwise the
bits are reset.
Table 5 contains the default filter coefficient values that are loaded into RAM upon power - up. These default
values correspond to default frequencies 2100 Hz (TD1), 1100 Hz (TD2), and 462Hz (TD3). Table 6 contains
the RAM access codes for all filter coefficients.
Table 5. Default Tone Detector Filter Coefficients
Table 6. Filter RAM Access Codes
0198
1A4A
175A
C0C4
011B
60BE
5E9C
C0C4
0048
79F3
7974
C083
0.01245
0.20538
0.18243
-0.49402
0.00854
0.75580
0.73914
-0.49402
0.00220
0.95273
0.94885
-0.49600
a0 = a
0
b1
b
1
b2 = b
2
a0 = a
0
b1
b
1
b2 = b
2
a0 = a
0
b1
b
1
b2 = b
2
Frequency
Detected ( Hz )
Bandwidth ( Hz )
Freq. Offset
( Hz )
Coeff. Name
Coeff. Value
( Hex )
Coeff. Value
( Decimal )
2100
1100
462
25
30
14
18
19
10
25
27
27
28
29
2A
A6
A7
A9
AA
A8
A9
2B
2C
2D
2E
2F
30
AC
AD
AF
B0
AE
AB
31
32
33
34
35
36
B2
B3
B5
B6
B4
B1
a0
a1
a2
a
0
a
1
a
2
b1
b2
b
1
b
2
a
b”
Coefficient Name
RAM Access Code ( Hex )
Tone2
X
X
X
X
X
X
Y
Y
Y
Y
Y
Y
X, Y
Tone3
Tone1
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