MiTAC 8355 service manual MDC PCTel Modem Daughter Card PCT2303W

8355 N/B MAINTENANCE

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.

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