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參數(shù)資料
| 型號(hào)： | MT88L85AE |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | 3V Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| 中文描述： | 3V的集成DTMFTransceiver與掉電 |
| 文件頁(yè)數(shù)： | 13/20頁(yè) |
| 文件大?。?/td> | 350K |
| 代理商： | MT88L85AE |
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Advance Information
MT88L85
4-83
Figure 14 - Application Notes
INITIALIZATION PROCEDURE
A software reset must be included at the beginning of all programs to initialize the control registers after
power up.
Description:
Motorola Intel
R/W
1
0
0
0
0
1
Data
b2
X
0
0
0
0
X
RS0
1
1
1
1
1
1
WR RD
1
0
0
0
0
1
b3
X
0
0
1
0
X
b1
X
0
0
0
0
X
b0
X
0
0
0
0
X
1) Read Status Register
2) Write to Control Register
3) Write to Control Register
4) Write to Control Register
5) Write to Control Register
6) Read Status Register
0
1
1
1
1
0
TYPICAL CONTROL SEQUENCE FOR BURST MODE APPLICATIONS
Transmit DTMF tones of 50 ms burst/50 ms pause and Receive DTMF Tones.
Sequence:
RS0
1
R/W
0
WR RD
0
b3
1
b2
1
b1
0
b0
1
1) Write to Control Register A
(tone out, DTMF, IRQ, Select Control Register B)
2) Write to Control Register B
(burst mode)
3) Write to Transmit Data Register
(send a digit 7)
4) Wait for an Interrupt or Poll Status Register
5) Read the Status Register
1
1
0
0
1
0
0
0
0
0
0
0
1
0
1
1
1
1
1
1
0
X
X
X
X
-if bit 1 is set, the Tx is ready for the next tone, in which case ...
Write to Transmit Register
(send a digit 5)
0
0
0
1
0
1
0
1
-if bit 2 is set, a DTMF tone has been received, in which case ....
Read the Receive Data Register
0
1
1
0
X
X
X
X
-if both bits are set ...
Read the Receive Data Register
Write to Transmit Data Register
0
0
1
0
1
0
0
1
X
0
X
1
X
0
X
1
NOTE: IN THE TX BURST MODE, STATUS REGISTER BIT 1 WILL NOT BE SET UNTIL 100 ms ( ±2 ms) AFTER THE DATA IS
WRITTEN TO THE TX DATA REGISTER. IN EXTENDED BURST MODE THIS TIME WILL BE DOUBLED TO 200 ms (± 4 ms)
相關(guān)PDF資料 |
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| MT88L85AN | 3V Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT88L85AP | 3V Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT88L89 | 3V Integrated DTMFTransceiver with Adaptive Micro Interface |
| MT88L89AC | 3V Integrated DTMFTransceiver with Adaptive Micro Interface |
| MT88L89AE | 3V Integrated DTMFTransceiver with Adaptive Micro Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT88L85AE1 | 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 24PDIP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 3V 24PDIP 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 3V 24PDIP |
| MT88L85AN | 制造商:Microsemi Corporation 功能描述: |
| MT88L85AN1 | 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 3V 24SSOP - Rail/Tube 制造商:Microsemi Corporation 功能描述:3V DTMF TRANSCEIVER |
| MT88L85ANR | 制造商:Microsemi Corporation 功能描述: |
| MT88L85ANR1 | 制造商:Microsemi Corporation 功能描述:PB FREE 3 VOLT DTMF TRANSCEIVER W/PWRDN 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 |
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