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參數(shù)資料
| 型號： | MB86434 |
| 廠商： | Fujitsu Limited |
| 英文描述： | 5V Single Power Supply Audio Interface Unit (AIU) |
| 中文描述： | 5V單電源供電音頻接口單元（美亞） |
| 文件頁數(shù)： | 12/38頁 |
| 文件大?。?/td> | 574K |
| 代理商： | MB86434 |
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MB86434
12
(5) Tone Generator Circuit
Tone Frequency Control Registers
The tone generator uses a clock signal obtained by subdividing the TCLK clock signal input by 1/1, 1/2 or 1/4
according to the data bit in address 1110.
Table 3 Tone Clock Frequency Register Control
Frequency settings available through the tone frequency control register are determined by the following formula.
Frequency setting f = f
IN
/(12*(1+n)), n = 1, 2, 3, ..., 255. (where f
IN
: tone generator clock signal frequency).
Therefore the available frequency setting range when f
IN
= 512 kHz is between f
min
= 167 Hz and f
max
= 21333 Hz.
Frequency settings corresponding to each DTMF rated reference frequency are shown in the following table.
Table 4 Tone Frequency Register Control
(Condition: 512 kHz)
Note: Setting values are BIN display values
Error represents frequency setting error with respect to rated reference frequency.
Address 1110
Tone generator clock signal (f
IN
)
D
4
D
3
0
0
TCLK input clock signal
0
1
TCLK input clock signal subdivided by 1/2
1
0
TCLK input clock signal subdivided by 1/4
1
1
Prohibited
Tone type
Rated
reference
frequency
(generator
frequency)
Frequency
setting
Addres
1010/1100
Address
1011/1101
n
Error
Data bit
D
4
D
3
D
2
D
1
D
0
Data bit
D
4
D
3
D
2
D
1
D
0
Service tone
(single tone)
262 Hz
261.7 Hz
—
1
0
1
0
*
0
0
1
0
162
–0.11%
384 Hz
384.4 Hz
—
0
1
1
0
*
1
1
1
0
110
0.10%
400 Hz
398.7 Hz
—
0
1
1
0
*
1
0
1
0
106
–0.32%
2000 Hz
2031.7 Hz
—
0
0
0
1
*
0
1
0
0
20
1.56%
2600 Hz
2666.7 Hz
—
0
0
0
0
*
1
1
1
1
15
2.50%
D
T
M
F
Low tone
697 Hz
699.4 Hz
—
0
0
1
1
*
1
1
0
0
60
0.34%
770 Hz
775.7 Hz
—
0
0
1
1
*
0
1
1
0
54
0.74%
852 Hz
853.3 Hz
—
0
0
1
1
*
0
0
0
1
49
0.15%
941 Hz
948.1 Hz
—
0
0
1
0
*
1
1
0
0
44
0.75%
High tone
1209 Hz
1219.0 Hz
—
0
0
1
0
*
0
0
1
0
34
0.82%
1336 Hz
1333.3 Hz
—
0
0
0
1
*
1
1
1
1
31
–0.20%
1477 Hz
1471.3 Hz
—
0
0
0
1
*
1
1
0
0
28
–0.38%
1633 Hz
1641.0 Hz
—
0
0
0
1
*
1
0
0
1
25
0.48%
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|---|---|
| MB86434PF | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:5V Single Power Supply Audio Interface Unit (AIU) |
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| MB86437PFV | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:3 V Single Power Supply Audio Interface Unit (AIU) |
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