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參數(shù)資料
| 型號： | AS2540-T |
| 廠商： | ams |
| 文件頁數(shù)： | 17/19頁 |
| 文件大小： | 0K |
| 描述： | IC TELEPHONE CMOS MULTIFU 28SOIC |
| 標準包裝： | 1,500 |
| 系列： | * |
Data Sheet AS2540
austriamicrosystems
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
d5
d4
d3
d2
d1
1
LSB
d7
d6
d5
d4
d3
d2
d1
d0
DTMF-dial message
Notes
xx
01010
1
Digit 0
Starts DTMF dialling of digit
xx
00001
1
Digit 1
Starts DTMF dialling of digit
xx
00010
1
Digit 2
Starts DTMF dialling of digit
xx
00011
1
Digit 3
Starts DTMF dialling of digit
xx
00100
1
Digit 4
Starts DTMF dialling of digit
xx
00101
1
Digit 5
Starts DTMF dialling of digit
xx
00110
1
Digit 6
Starts DTMF dialling of digit
xx
00111
1
Digit 7
Starts DTMF dialling of digit
xx
01000
1
Digit 8
Starts DTMF dialling of digit
xx
01001
1
Digit 9
Starts DTMF dialling of digit
xx
01011
1
Digit *
Starts DTMF dialling of digit
xx
00000
1
Digit #
Starts DTMF dialling of digit
xx
01100
1
Digit A
Starts DTMF dialling of digit
xx
01101
1
Digit B
Starts DTMF dialling of digit
xx
01110
1
Digit C
Starts DTMF dialling of digit
xx
01111
1
Digit D
Starts DTMF dialling of digit
xx
10000
1
KeyReleased
Stops Dialling
d7
d6
d5
d4
d3
d2
d1
d0
Pin-Control message
Notes
xx
10110
1
SetDPn_HIGH
Release pin Dpn (open drain)
xx
10001
1
SetDPn_LOW
Force pin DPn = VSS
xx
10010
1
SetMask
Force LI-Voltage to 1.2 V
xx
10011
1ResetMask
ams
AG
Technical
content
still
valid
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