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參數(shù)資料
| 型號： | MT8888CE |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Integrated DTMFTransceiver with Intel Micro Interface |
| 中文描述： | 綜合DTMFTransceiver與英特爾微型接口 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 302K |
| 代理商： | MT8888CE |
MT8888C/MT8888C-1
4-101
Figure 14 - Test Circuits
Figure 15 - Application Notes
TEST POINT
MMD6150 (or
equivalent)
5.0 VDC
2.4 k
24 k
130 pF
MMD7000 (or
equivalent)
TEST POINT
5.0 VDC
3 k
100 pF
Test load for IRQ/CP pin
Test load for D0-D3 pins
INITIALIZATION PROCEDURE
A software reset must be included at the beginning of all programs to initialize the control registers after
power up.The initialization procedure should be implemented 100ms after power up.
Description:
RS0
1) Read Status Register
1
2) Write to Control Register
1
3) Write to Control Register
1
4) Write to Control Register
1
5) Write to Control Register
1
6) Read Status Register
1
Control
Data
b2
X
0
0
0
0
X
WR
1
0
0
0
0
1
RD
0
1
1
1
1
0
b3
X
0
0
1
0
X
b1
X
0
0
0
0
X
b0
X
0
0
0
0
X
TYPICAL CONTROL SEQUENCE FOR BURST MODE APPLICATIONS
Transmit DTMF tones of 50 ms burst/50 ms pause and Receive DTMF Tones.
Sequence:
RS0
1
WR
0
RD
1
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
0
1
0
0
0
0
0
0
1
0
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
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
0
X
X
X
X
-if both bits are set...
Read the Receive Data Register
Write to Transmit Data Register
0
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)
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8888CE1 | 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:Microsemi Corporation 功能描述:PB FREE DTMF TRANSCEIVER 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 20PDIP 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 20PDIP |
| MT8888CE-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver with Intel Micro Interface |
| MT8888CN | 制造商:Microsemi Corporation 功能描述: |
| MT8888CN1 | 制造商:Microsemi Corporation 功能描述: 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 24SSOP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 24SSOP 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 24SSOP |
| MT8888CN-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver with Intel Micro Interface |
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