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參數(shù)資料
| 型號(hào)： | MT8880C |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Integrated DTMF Transceiver(雙音多頻信號(hào)（DTMF）收發(fā)器（帶電話程序?yàn)V波器）) |
| 中文描述： | 集成雙音多頻收發(fā)器（雙音多頻信號(hào)（DTMF）的收發(fā)器（帶電話程序?yàn)V波器）） |
| 文件頁數(shù)： | 12/24頁 |
| 文件大?。?/td> | 188K |
| 代理商： | MT8880C |
MT8880C
ISO
2
-CMOS
4-44
Figure 15 - MT8880C to 6802 Interface
Figure 16 - Application Hints
IRQ
Address
VMA
R/W
E
Data
Peripheral decode
+5V
3.3k
IRQ
RS0
CS
R/W
Φ
2
Data
6802
MT8880C
EXAMPLE 1:
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
CS
1) Read Status Register
0
2) Write to Control Register
0
3) Write to Control Register
0
4) Write to Control Register
0
5) Write to Control Register
0
6) Read Status Register
0
Control
RS0
1
1
1
1
1
1
Data
b2
X
0
0
0
0
X
R/W
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
EXAMPLE 2:
Transmit DTMF tones of 50 ms burst/50 ms pause and Receive DTMF Tones
Description
CS
0
RS0
1
R/W
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)
--------------------------------------wait for an interrupt or poll Status Register ----------------------------------------------
4) Read the Status Register
0
0
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
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
0
1
0
1
-if bit 2 is set, a DTMF tone has been received, in which case....
Read the Receive Data Register
0
0
1
X
X
X
X
-if both bits are set...
Read the Receive Data Register
Write to Transmit Data Register
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)
.
0
0
0
0
1
0
X
0
X
1
X
0
X
1
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PDF描述 |
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| MT8885AE | Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT8885AN | Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT8885AP | Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT8885 | Integrated DTMFTransceiver with Power Down & Adaptive Micro Interface |
| MT8885 | Integrated DTMF Transceiver with Power Down and Adaptive Micro Interface(雙音多頻信號(hào)（DTMF）收發(fā)器（帶電源關(guān)閉和自適應(yīng)微接口）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8880CC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CC/CC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver |
| MT8880CC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CE | 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:Zarlink Semiconductor 功能描述:Bulk |
| MT8880CE/CE-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver |
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