EV8680 Datasheet, PDF (15/39 Pages) CML Microcircuits – Evaluation Kit

Evaluation Kit for CMX868
EV8680
The ‘Hyper Terminal’ Send Text File facility is useful for data transfer i.e. when the EV8680 has
established a connection with a remote modem. This terminal emulator facility can also be used for
sending AT command scripts to the EV8680. These scripts should consist of a single line multiple AT
command, for example.
ATH1@RE0=4929@RE6?@RE1=4567<CR>
Note, some of the commands listed may not be implemented in early versions of EV8680 firmware.
Please read the separate information sheet (EK8680) and check the CML web site for firmware status.
Basic EV8680 AT Commands
Command
A
Description
Answer Command
The modem will go off-hook and attempt to establish a connection with a remote
modem.
Syntax: ATA<CR>
A/
Re-Execute Previous Command Line
Re-executes the last issued command line. This command does not require the AT
prefix or a carriage return.
Syntax: A/
Bn
Select Communications Standard
Selects the communications standard specified by the parameter n.
Syntax: ATBn<CR>
Modifier Usage
n=0 Selects ITU-T V.22bis at 2400bps QAM (default).
n=1 Selects ITU-T V.22 at 1200bps DPSK.
n=2 Selects ITU-T V.23 with Tx 75bps and Rx 1200bps FSK.
n=3 Selects ITU-T V.23 with Tx 1200bps and Rx 75bps FSK.
n=4 Selects ITU-T V.22 at 600bps DPSK.
n=5 Selects ITU-T V.21 at 300bps FSK.
n=6 Selects Bell 212A at 1200bps DPSK.
n=7 Selects Bell 202 with Tx 150bps and Rx 1200bps FSK.
n=8 Selects Bell 202 with Tx 1200bps and Rx 150bps FSK.
n=9 Selects Bell 103 at 300bps FSK.
Dn
Dial Command
This command directs the modem to go off-hook, dials according to the string
entered and attempts to establish a connection with a remote modem. The n
represents an ASCII string composed of dial digits and dial modifiers and must not
exceed the 15 character buffer limit. The DTMF tone dialling digits include 0
through 9, A, B, C, D, and the symbols # and *.
For example: ATD9,01621875500<CR>
Modifier Usage
n=L Re-dial last number.
n=, Delay dial sequence (pause setting contained in S-Register S8).
© 2000 Consumer Microcircuits Limited
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UM8680/2