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參數(shù)資料
| 型號： | AS2540Q |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Remote Controlled Single-Chip-Telephone |
| 中文描述： | TELEPHONE MULTIFUNCTION CKT, UUC |
| 封裝： | DIE |
| 文件頁數(shù)： | 6/18頁 |
| 文件大小： | 248K |
| 代理商： | AS2540Q |
Data Sheet AS2540
austria
micro
systems
Revision 3.1
Page 6 of 18
Serial interface
The communication principle is derived from a standard UART:
-
Baud Rate
9600
-
Start Bit
1
-
Data Bits
8
-
Parity
None
-
Stop Bit
1
-
LSB is transferred prior to MSB
Rx - messages
Message Format
X
MSB
X
d
5
d
4
d
3
d
2
d
1
1
LSB
d7
d6
d5
d4
d3
d2
d1
d0
DTMF-dial message
Notes
x
x
0
1
0
1
0
1
Digit 0
Starts DTMF dialling of digit
x
x
0
0
0
0
1
1
Digit 1
Starts DTMF dialling of digit
x
x
0
0
0
1
0
1
Digit 2
Starts DTMF dialling of digit
x
x
0
0
0
1
1
1
Digit 3
Starts DTMF dialling of digit
x
x
0
0
1
0
0
1
Digit 4
Starts DTMF dialling of digit
x
x
0
0
1
0
1
1
Digit 5
Starts DTMF dialling of digit
x
x
0
0
1
1
0
1
Digit 6
Starts DTMF dialling of digit
x
x
0
0
1
1
1
1
Digit 7
Starts DTMF dialling of digit
x
x
0
1
0
0
0
1
Digit 8
Starts DTMF dialling of digit
x
x
0
1
0
0
1
1
Digit 9
Starts DTMF dialling of digit
x
x
0
1
0
1
1
1
Digit *
Starts DTMF dialling of digit
x
x
0
0
0
0
0
1
Digit #
Starts DTMF dialling of digit
x
x
0
1
1
0
0
1
Digit A
Starts DTMF dialling of digit
x
x
0
1
1
0
1
1
Digit B
Starts DTMF dialling of digit
x
x
0
1
1
1
0
1
Digit C
Starts DTMF dialling of digit
x
x
0
1
1
1
1
1
Digit D
Starts DTMF dialling of digit
x
x
1
0
0
0
0
1
KeyReleased
Stops Dialling
d7
d6
d5
d4
d3
d2
d1
d0
Pin-Control message
Notes
x
x
1
0
1
1
0
1
SetDPn_HIGH
Release pin Dpn (open drain)
x
x
1
0
0
0
1
1
SetDPn_LOW
Force pin DPn = VSS
x
x
1
0
0
1
0
1
SetMask
Force LI-Voltage to 1.2 V
x
x
1
0
0
1
1
1
ResetMask
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