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SI2493 Datasheet(PDF) 2 Page - Silicon Laboratories

Part # SI2493
Description  Evaluation Board Rev 5.0 for the Si2493/57/34/15/04
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Manufacturer  SILABS [Silicon Laboratories]
Direct Link  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI2493 Datasheet(HTML) 2 Page - Silicon Laboratories

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Si2493/57/34/15/04
Global ISOmodem-EVB
2
Rev. 0.7
1. Si2493/57/34/15/04-EVB Setup and
Evaluation
This section explains how to set up the Si2493/57/34/
15/04-EVB for evaluation as an RS-232 or USB
interface modem. Jumper settings, power connection,
PC/terminal
connections,
and
terminal
program
configuration settings are given. The initial modem
setup after power is applied as well as a basic tutorial
on modem operation are provided. Si2493/57/34/15/04-
EVB configurations for evaluating additional features
are discussed separately. See the Si2493/57/34/15 or
Si2404 data sheets and “AN93: Si2493/57/34/15/04/04
Modem Designer’s Guide” for complete details.
1.1. Si2493/57/34/15/04-EVB Quick Start—
RS-232 Interface
1. Set jumpers according to Figure 1, but change J6 to the
arrangement shown in Figure 3 if an FS ISOmodem
package is used.
2. Connect:

DB-9 to PC COM 1 (with a pass-through cable).

RJ-11 to phone line or CO simulator.

9 V ac adaptor (or USB cable).
3. Bring up:

Turn on power to modem.

Autobaud automatically adjusts modem DTE speed and
protocol.
4. Type “AT” followed by a carriage return.

Should echo “AT” and then an “OK”.
1.2. Si2493/57/34/15/04-EVB Quick Start—
USB Interface
1. Set jumpers according to Figure 3, but change J6 to the
arrangement shown in Figure 3 if an FS ISOmodem
package is used.
2. Connect:

USB cable to PC

RJ-11 to phone line or CO simulator
3. Download USB driver for your operating system from the
CD supplied with the evaluation board.
4. Install driver.
5. Bring up.

Reset the modem.

Autobaud automatically adjusts modem DTE speed and
protocol.
6. Type “AT” followed by a carriage return.

Should echo “AT” and then an “OK”.
1.3. Motherboard and Daughter Card
Configuration
The EVB consist of a motherboard that takes a plug in
daughter card. The motherboard can be configured in a
variety of ways that are explained below and are
managed via jumpers. The daughter card contains both
the modem system side and the isolated line interface
(DAA).
The daughter card comes preconfigured and functional
although the user may decide to change some
operating options such as the type of crystal used with
the modem chip or the type of control signals used, i.e.
UART vs parallel. These features must be managed by
changing strapping
resistors soldered down to the
daughter card and by changing parts associated with
the crystal. These possible changes are explained
below.
1.3.1. Motherboard Configuration
Check all the jumper setting on the S2493/57/34/15/04-
EVB before applying power.
The standard factory
setting for the modem in a 24-pin FT package are
shown in the figure below. This setup configures the
modem for RS232 serial operation with autobaud
enabled. Any standard terminal program configured to
communicate through a PC com port can be used to
communicate with the EVB.
Figure 1 shows the default motherboard setup for the
FT package daughter card as well as the functions of
connectors and jumpers.


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