|Input voltage||7.5-13 V|
|Output 1||0.1 A|
The global Si2435/17-EVB evaluation board provides the system designer an easy way of evaluating the Si2435/17 Fax ISOmodem®. The Si2435/17-EVBconsists of a motherboard with a power supply, an RS- 232 and USB interface, other ease-of-use features, and a complete removable modem module on a daughter card. (A functional block diagram of the Si2435/17-EVB is shown below.) The Si2435/17 ISOmodem is a complete controller-based modem chipset with an integrated and programmable direct accessarrangement (DAA) that meets global telephone line requirements. Available as a combination of one 16-pin small line-side device and one 24-pin system-side device, the Si2435/17 ISOmodem eliminates the need for a separate DSP data pump, modem controller, memories, codec, isolation transformer, relays, optoisolators, and a 2- to 4-wire hybrid. The Si2435/17 isideal for embedded fax modem applications due to its small board area, controller-based architecture, low power consumption, and global compliance. The Si2435/17-EVB provides an RJ-11 jack (for interfacing the Si2435/17-EVB to the phone line), and USB and RS232 serial ports for interfacing to a PC or host. This allows the ISOmodem to operate as a Class 1 modem for straightforward evaluation of the Si2435/17. To evaluate the Si2435/17 ISOmodem in an embedded system, the daughter card can be used independently of or with the motherboard. A direct access header(JP3) is available on the motherboard to bypass the RS- 232 transceivers and connect the Si2435/17 Fax ISOmodem directly to a target system. An onboard rectifier, filter, and voltage regulator allow the power input to be 7.5–13 V ac or dc (either polarity) supplied through a screw terminal (J3) or a standard 2 mm power jack (J4). Alternatively, power can be supplied through the USB interface (whether the USB or RS232 interface is used). The evaluation board can drive an external speaker for call monitoring or thepiezoelectric speaker mounted directly on the board. Please note that the PCM interface, parallel interface, and EEPROM are available on the FT only. The Si2435/ 17 devices require a software driver in order to implement fax send/receive functionality. The driver must be compliant with the Si2435/17 and with the applicable ITU-T standards (e.g. T.30, T.31, T.4, and T.6). Contact Silicon Laboratories for details.