參數(shù)資料
型號: PCD3330-1P
廠商: NXP SEMICONDUCTORS
元件分類: 無繩電話/電話
英文描述: Multistandard repertory dialler/ringer with EEPROM
中文描述: TELEPHONE MULTIFUNCTION CKT, PDIP28
封裝: 0.600 INCH, PLASTIC, SOT-117, DIP-28
文件頁數(shù): 15/32頁
文件大小: 152K
代理商: PCD3330-1P
1997 Jan 15
15
Philips Semiconductors
Product specification
Multistandard repertory dialler/ringer with
EEPROM
PCD3330-1
The STO-key will end the programming procedure,
whereas after the LNR-key a new byte can be selected to
have the required bit changed.
5.4
Operation mode overview
The PCD3330-1 has in total five operation modes:
standby, conversation, ringer, dialling and programming.
The state diagram is given in Fig.7.
When both CE/RF and the HOOK input are LOW the
PCD3330-1 goes to the standby mode, in which the
contents of the redial register is refreshed, the oscillator
switched off and the device enters the low current state.
A HIGH state on the CE/RF and/or the HOOK input will
cause a complete initialization of the PCD3330-1 which
means setting of the I/O pins, clearing of the RAM and
reloading the EEPROM contents into it.
5.5
Pulse/DTMF dialling function
5.5.1
P
ULSE
/DTMF
MODE SELECTION BY PIN
The PCD3330-1 has two dialling modes, pulse dialling and
Dual Tone Multi Frequency (DTMF). These can be
selected via the PD/DTMF input in the following way:
PD/DTMF = HIGH (V
DD
) = DTMF mode.
PD/DTMF = LOW (V
SS
) = pulse mode.
The controller accepts the information also during manual
dialling. Switching the input to the pin PD/DTMF changes
the dialling mode after transmitting the digit in progress.
Fig.7 State diagram of the PCD3330-1 dialler/ringer.
handbook, full pagewidth
MGG577
DIALLING
CONVERSATION
STANDBY
PROGRAMMING
RINGER
end dial
start dial
STO-key
STO-key
CE/RF = 1
HOOK = 1
CE/RF = 0
HOOK = 0
CE/RF = 1
HOOK = 1
CE/RF = HOOK = 0
CE/RF = HOOK = 0
CE/RF = HOOK = 0
HOOK = 0
CE/RF = AC
相關(guān)PDF資料
PDF描述
PCD3330-1T Multistandard repertory dialler/ringer with EEPROM
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