參數(shù)資料
型號(hào)： 935247300112
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 16 MHz, MICROCONTROLLER, PDSO28
封裝： 7.50 MM, PLASTIC, SO-28
文件頁數(shù)： 2/35頁
文件大?。?/td> 243K
代理商： 935247300112
1997 Apr 16
10
Philips Semiconductors
Product specication
8-bit microcontrollers with DTMF generator,
8 kbytes OTP and 128 bytes EEPROM
PCD3755A; PCD3755E;
PCD3755F
6.4
DTMF frequencies
Assuming an oscillator frequency fxtal = 3.58 MHz, the
DTMF standard frequencies can be implemented as
shown in Table 6.
The relationships between telephone keyboard symbols,
DTMF frequency pairs and the frequency register contents
are given in Table 7.
Table 6
DTMF standard frequencies and their
implementation; value = LGF, HGF contents
Table 7
Dialling symbols, corresponding DTMF
frequency pairs and frequency register contents
VALUE
(HEX)
FREQUENCY (Hz)
DEVIATION
STANDARD
GENERATED
(%)
(Hz)
DD
697
697.90
0.13
0.90
C8
770
770.46
0.06
0.46
B5
852
850.45
0.18 1.55
A3
941
943.23
0.24
2.23
7F
1209
1206.45
0.21 2.55
72
1336
1341.66
0.42
5.66
67
1477
1482.21
0.35
5.21
5D
1633
1638.24
0.32
5.24
TELEPHONE
KEYBOARD
SYMBOLS
DTMF FREQ.
PAIRS
(Hz)
LGF
VALUE
(HEX)
HGF
VALUE
(HEX)
0
(941, 1336)
A3
72
1
(697, 1209)
DD
7F
2
(697, 1336)
DD
72
3
(697, 1477)
DD
67
4
(770, 1209)
C8
7F
5
(770, 1336)
C8
72
6
(770, 1477)
C8
67
7
(852, 1209)
B5
7F
8
(852, 1336)
B5
72
9
(852, 1477)
B5
67
A
(697, 1633)
DD
5D
B
(770, 1633)
C8
5D
C
(852, 1633)
B5
5D
D
(941, 1633)
A3
5D
(941, 1209)
A3
7F
#
(941, 1477)
A3
67
6.5
Modem frequencies
Again assuming an oscillator frequency fxtal = 3.58 MHz,
the standard modem frequencies can be implemented as
in Table 8. It is suggested to define the frequency by the
HGF register while the LGF register contains 00H,
disabling Low Group Frequency generation.
Table 8
Standard modem frequencies and their
implementation
Notes
1. Standard is V.21.
2. Standard is Bell 103.
3. Standard is Bell 202.
4. Standard is V.23.
HGF
VALUE
(HEX)
FREQUENCY (Hz)
DEVIATION
MODEM
GENERATED
(%)
(Hz)
9D
980(1)
978.82
0.12 1.18
82
1180(1)
1179.03
0.08 0.97
8F
1070(2)
1073.33
0.31
3.33
79
1270(2)
1265.30
0.37 4.70
80
1200(3)
1197.17
0.24 2.83
45
2200(3)
2192.01
0.36 7.99
76
1300(4)
1296.94
0.24 3.06
48
2100(4)
2103.14
0.15
3.14
5C
1650(1)
1655.66
0.34
5.66
52
1850(1)
1852.77
0.15
2.77
4B
2025(2)
2021.20
0.19 3.80
44
2225(2)
2223.32
0.08 1.68
相關(guān)PDF資料
PDF描述
0676.400 CONNECTOR ACCESSORY
0676.500 CONNECTOR ACCESSORY
935196750112 ABT SERIES, 18 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56
935203200118 ABT SERIES, 18-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56
935196750118 ABT SERIES, 18 1-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
935248-90 制造商:JANCO 功能描述:935248-90
9-3525-012 制造商:KEYSTONE 功能描述:MODIFIED 3525,VERSION E
935252-5 制造商:C-H 功能描述:935252-5
935257650112 制造商:NXP Semiconductors 功能描述:SUB ONLY ICSUBS TO 935257650112
935260093112 制造商:NXP Semiconductors 功能描述:IC AVIC ADV BASESTATION 14SOIC
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*