Description

The Si2493 is an ISOmodem chipset that serves as a controller-based modem with a programmable direct access arrangement (DAA) that meets global telephone line requirements. It includes a 16-pin small line-side device and a 24-pin or 16-pin system-side device that does not require a separate DSP data pump, modem controller, memories, codec, isolation transformer, relays, opto-isolators, or a 2- to 4-wire hybrid. It is suitable for embedded modem applications due to its small board area, controller-based architecture, low power consumption, and global compliance. The global Si2493/57/34/15/04-EVB evaluation board Rev 5.0 provides the system designer with a more accessible way to evaluate the Si2493 modem.

Specifications and Features

• Dual RJ-11 connection to phone line
• RS-232 and USB interface to PC
• Speaker for call monitoring
• Direct access to Si2493 for embedded application evaluation
• Easy power connection to common 7.5 V–13.5 V power supplies or USB port
• 9 V ac adaptor
• Simple installation and operation
• EEPROM (24-pin FT only)
• RS232 lines status display on LEDs

Application Scenarios

The Si2493/57/34/15/04-EVB serves as an evaluation board that provides an RJ-11 jack for interfacing the Si2493 modem to the phone line, and USB and RS232 serial ports for interfacing to a PC or data terminal. This eliminates the need for a separate DSP data pump, modem controller, memories, codec, isolation transformer, relays, opto-isolators, and a 2- to 4-wire hybrid. The daughter card can be used independently or with the motherboard for evaluating the Si2493 in an embedded system.

Comparison

• Eliminates the need for a separate DSP data pump, modem controller, memories, codec, isolation transformer, relays, opto-isolators, and a 2- to 4-wire hybrid
• Small board area and controller-based architecture make it ideal for embedded modem applications
• Global compliance ensures it meets all global telephone line requirements

• The Si2493/57/34/15/04-EVB may not be suitable for use in all systems and configurations
• The evaluation board may not be as cost-effective as other evaluation methods