參數(shù)資料
型號(hào)： PCD3755E
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
中文描述： 8 -雙音多頻發(fā)生器位微控制器，8字節(jié)OTP和128字節(jié)EEPROM
文件頁(yè)數(shù)： 10/32頁(yè)
文件大?。?/td> 200K
代理商： PCD3755E
1997 Apr 16
10
Philips Semiconductors
Product specification
8-bit microcontrollers with DTMF generator,
8 kbytes OTP and 128 bytes EEPROM
PCD3755A; PCD3755E;
PCD3755F
6.4
DTMF frequencies
Assuming an oscillator frequency f
xtal
= 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
C8
B5
A3
7F
72
67
5D
697
770
852
941
1209
1336
1477
1633
697.90
770.46
850.45
943.23
1206.45
1341.66
1482.21
1638.24
0.13
0.06
0.18
0.24
0.21
0.42
0.35
0.32
0.90
0.46
1.55
2.23
2.55
5.66
5.21
5.24
TELEPHONE
KEYBOARD
SYMBOLS
DTMF FREQ.
PAIRS
(Hz)
LGF
VALUE
(HEX)
HGF
VALUE
(HEX)
0
1
2
3
4
5
6
7
8
9
A
B
C
D
#
(941, 1336)
(697, 1209)
(697, 1336)
(697, 1477)
(770, 1209)
(770, 1336)
(770, 1477)
(852, 1209)
(852, 1336)
(852, 1477)
(697, 1633)
(770, 1633)
(852, 1633)
(941, 1633)
(941, 1209)
(941, 1477)
A3
DD
DD
DD
C8
C8
C8
B5
B5
B5
DD
C8
B5
A3
A3
A3
72
7F
72
67
7F
72
67
7F
72
67
5D
5D
5D
5D
7F
67
6.5
Modem frequencies
Again assuming an oscillator frequency f
xtal
= 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.
2.
3.
4.
Standard is V.21.
Standard is Bell 103.
Standard is Bell 202.
Standard is V.23.
HGF
VALUE
(HEX)
FREQUENCY (Hz)
DEVIATION
MODEM
GENERATED
(%)
(Hz)
9D
82
8F
79
80
45
76
48
5C
52
4B
44
980
(1)
1180
(1)
1070
(2)
1270
(2)
1200
(3)
2200
(3)
1300
(4)
2100
(4)
1650
(1)
1850
(1)
2025
(2)
2225
(2)
978.82
1179.03
1073.33
1265.30
1197.17
2192.01
1296.94
2103.14
1655.66
1852.77
2021.20
2223.32
0.12
0.08
0.31
0.37
0.24
0.36
0.24
0.15
0.34
0.15
0.19
0.08
1.18
0.97
3.33
4.70
2.83
7.99
3.06
3.14
5.66
2.77
3.80
1.68
相關(guān)PDF資料
PDF描述
PCD3755EH 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755EP 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755ET 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755F 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755FH 8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCD3755EH 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755EHB-S 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:8-Bit Microcontroller
PCD3755EP 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755ET 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
PCD3755F 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:8-bit microcontrollers with DTMF generator, 8 kbytes OTP and 128 bytes EEPROM
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