EV8680 datasheet(30/39 Pages) CMLMICRO

30 / 39 page

Evaluation Kit for CMX868

EV8680

UM8680/2

1.6.6.2 Set up EV8680 to Manually Answer V.23 Call from a Remote Modem

1. Select V.23 communication standard (default is V.22 bis).

Command : ATB2<CR>

2. Enable/Disable Fixed Compromise Equalisers by writing to S-Register, S24 (default is enabled).

3. Configure CMX868 Transmitter by writing to S-Register, S25

4. Configure CMX868 Receiver by writing to S-Register, S26.

5. Manually Answer V.23 Call.

Command : ATA<CR>

The EV8680 will attempt to establish a V.23 connection. The CONNECT 1200/75 result code will be

returned to the PC if a V.23 connection is successfully established. The NO CARRIER result code will

be returned to the PC if the EV8680 fails to establish a V.23 connection within the time specified in S-

1.6.6.3 Set up EV8680 to Originate V.22 bis Call to a Remote Modem

Configure EV8680 to dial out using a blind dialling method with DTMF tone duration of 150ms.

1. Select V.22 bis communication standard (default is V.22 bis).

Command : ATB0<CR>

2. Set calling characteristic to blind dial, ignoring dial and busy tones (default is ATX1).

Command : ATX1<CR>

3. Set Wait Time for Blind dialling S-Register (S6) to 5 seconds.

Command : ATS6=5<CR>

4. Set DTMF Tone Duration S-Register (S11) to 150ms.

Command : ATS11=15<CR>

5. Enable/Disable Fixed Compromise Equalisers by writing to S-Register, S24 (default is enabled).

6. Configure CMX868 Transmitter by writing to S-Register, S25.

7. Configure CMX868 Receiver by writing to S-Register, S26.

8. DTMF Dial.

Command : ATD0165447887<CR>

The EV8680 will go off-hook and blind dial after 5 seconds. After dialling the EV8680 will attempt to

establish a V.22 bis connection. The CONNECT 2400 result code will be returned to the PC if a V.22

bis connection is successfully established. The NO CARRIER result code will be returned to the PC if

the EV8680 fails to establish a V.22 bis connection within the time specified in S-Register, S7.

EV8680 Datasheet(PDF) 30 Page - CML Microcircuits