參數(shù)資料
型號(hào)： MT88L89
廠商： Mitel Networks Corporation
英文描述： 3V Integrated DTMFTransceiver with Adaptive Micro Interface
中文描述： 3V的綜合DTMFTransceiver自適應(yīng)微型接口
文件頁(yè)數(shù)： 10/20頁(yè)
文件大?。?/td> 352K
代理商： MT88L89
MT88L89
Advance Information
4-134
Table 3. Internal Register Functions
Table 4. CRA Bit Positions
Table 5. CRB Bit Positions
Motorola
Intel
RS0
R/W
WR
RD
FUNCTION
0
0
0
1
Write to Transmit
Data Register
0
1
1
0
Read from Receive
Data Register
1
0
0
1
Write to Control Register
1
1
1
0
Read from Status Register
b3
b2
b1
b0
RSEL
IRQ
CP/DTMF
TOUT
b3
b2
b1
b0
C/R
S/D
TEST
BURST
ENABLE
Table 6. Control Register A Description
BIT
NAME
DESCRIPTION
b0
TOUT
Tone Output Control. A logic high enables the tone output; a logic low turns the tone output
off. This bit controls all transmit tone functions.
CP/DTMF
Call Progress or DTMF Mode Select. A logic high enables the receive call progress mode;
a logic low enables DTMF mode. In DTMF mode the device is capable of receiving and
transmitting DTMF signals. In CP mode a retangular wave representation of the received
tone signal will be present on the IRQ/CP output pin if IRQ has been enabled (control
register A, b2=1). In order to be detected, CP signals must be within the bandwidth
specified in the AC Electrical Characteristics for Call Progress.
Note: DTMF signals cannot be detected when CP mode is selected.
b1
b2
IRQ
Interrupt Enable. A logic high enables the interrupt function; a logic low de-activates the
interrupt function. When IRQ is enabled and DTMF mode is selected (control register A,
b1=0), the IRQ/CP output pin will go low when either 1) a valid DTMF signal has been
received for a valid guard time duration, or 2) the transmitter is ready for more data (burst
mode only).
b3
RSEL
Register Select. A logic high selects control register B for the next write cycle to the
control register address. After writing to control register B, the following control register
write cycle will be directed to control register A.
相關(guān)PDF資料
PDF描述
MT88L89AC 3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AE 3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AN 3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AP 3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AS 3V Integrated DTMFTransceiver with Adaptive Micro Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT88L89AC 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AE 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:3V Integrated DTMFTransceiver with Adaptive Micro Interface
MT88L89AN 制造商:Microsemi Corporation 功能描述:
MT88L89AN1 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 24SSOP - Rail/Tube
MT88L89ANR1 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 24SSOP - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 3V 24SSOP 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 3V 24SSOP
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