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參數(shù)資料
| 型號(hào)： | CPC2400E |
| 廠商： | IXYS Integrated Circuits Division |
| 文件頁(yè)數(shù)： | 16/17頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | MODULE MODEM 2400BAUD EMBEDDEDED |
| 標(biāo)準(zhǔn)包裝： | 54 |
| 數(shù)據(jù)格式： | V.22，V.23 |
| 波特率： | 2.4k |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 模塊 |
| 供應(yīng)商設(shè)備封裝： | 模塊 |
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INTEGRATED CIRCUITS DIVISION
www.ixysic.com
8
R03
CPC2400E
Command
Function and Description
A
Answer
The A command makes the modem go off hook and respond to an incoming call. Use this command after the
modem has returned the RING result code.
If the modems successfully complete the answering process they each return a CONNECT result code and enter the
On-Line state.
If no transmit carrier signal is received from the calling modem within the time specied in S-register S7, the modem
hangs up, returns the NO CARRIER result code, and enters the Idle state.
Any commands following the answer command on the command line are ignored.
This command is aborted if a key is pressed before the answer process is completed, or when DTR is off if some
options in the &Q or &D commands have been used.
B
Communication
Standard Option
The B command tells the modem which special telephone line modulation standards to use. The modem can be
congured to use:
B0
Use the ITU-T modulation standards for all telephone line data rates. This includes V.22 for the
1200 bps telephone line data rate and V.21 for the 300 bps telephone line data rate.
B1
Not Supported
&C
Data Carrier
Detect Options
&C determines how the modem’s DCD signal relates to the carrier signal from the other modem. This
option takes effect only at the beginning of a telephone line connection. If &C is issued from the
Command state it will not have an immediate effect.
&C0
During asynchronous operation (&Q0 in effect) DCD is on at all times. During synchronous operation
(&Q1) DCD reects the state of the carrier signal from the other modem using S-registers S9 and S10.
This is the default value in North America.
&C1
Reects the state of the carrier signal from the other modem using S-registers S9 and S10.
D
Dial
The D command makes the modem dial a telephone call according to the digits and dial modiers in the dial string
following the command. Any commands following the dial string on a command line are ignored unless the semicolon
dial modier is the last character in the dial string. If the modem was already off hook when the Dial command
was given, the modem dials immediately without trying to detect a dial tone. Characters other than digits and dial
modiers in a dial string are ignored, but are counted as characters in the command line buffer.
If line current sensing is enabled, and line current is detected before the modem is taken off-hook when the modem
needs to dial, a NO CARRIER result code is displayed and the modem enters the Idle state. If the modem does not
need to dial (i.e., ATD with no dial string), the modem assumes the call was manually established and attempts to
make a connection.
The D command is not valid when the modem is in the On-Line state.
See DIAL MODIFIERS and MODEM RESULT CODES for more information.
AT Command Set
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