8355 N/B MAINTENANCE
8355 N/B MAINTENANCE
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1.2.6 MDC: PCTel MODEM DAUGHTER CARD PCT2303W
The PCT2303W chipset is designed to meet the demand of this emerging worldwide AMR/MDC market. The
combination of PC-TEL’s well proven PCT2303W chipset and the HSP56TM MR software modem driver allows
systems manufactures to implement modem functions in PCs at a lower bill of materials (BOM) while maintaining
higher system performance.
PC-TEL has streamlined the traditional modem into the Host Signal Processing (HSP) solution. Operating with the
Pentium class processors, HSP becomes part of the host computer’s system software. It requires less power to operate
and less physical space than standard modem solutions. PC-TEL’s HSP modem is an easily integrated, cost-effective
communications solution that is flexible enough to carry you into the future.
The PCT2303W chip set is an integrated direct access arrangement (DAA) and Codec that provides a programmable
line interface to meet international telephone line requirements. The PCT2303W chip set is available in two 16-pin
small outline packages (AC’97 interface on PCT303A and phone-line interface on PCT303W). The chip set eliminates
the need for an AFE, an isolation transformer, relays, opto-isolators, and 2-to 4-wire hybrid. The PCT2303W chip set
dramatically reduces the number of discrete components and cost required to achieve compliance with international
regulatory requirements. The PCT2303W complies with AC’97 Interface specification Rev. 2.1.
The chip set is fully programmable to meet worldwide telephone line interface requirements including those described
by CTR21, NET4, JATE, FCC, and various country-specific PTT specifications. The programmable parameters of the
PCT2303W chip set include AC termination, DC termination, ringer impedance, and ringer threshold. The
PCT2303W chip set has been designed to meet stringent worldwide requirements for out-of-band energy, billing-tone
immunity, lightning surges, and safety requirements.