专利名称：Analog front end and digital signal
processing device and method
发明人：Karl Nordling申请号：US08/931785申请日：19970916公开号：US06138190A公开日：20001024
摘要：A modem interface communicates data between a computer and a modem thatis coupled to an external communication network. The modem interface includes a hostinterface for coupling to a host processor of the computer, an analog interface forcoupling to the modem, and a digital signal processor for processing the data
communicated with the modem and the host processor. A memory is coupled to the hostinterface, the digital signal processor and the analog interface. The analog interfaceprovides clock signals and converts data between analog and digital for communicatingbetween the memory and the modem. The analog interface provides an interrupt to thedigital signal processor to control the transfer of data from the digital signal processorand the memory. The modem interface processes data at sampling rates while the hostprocessor processes data at rates less than the sampling rate of the analog interface.Communication between the modem interface and the host processor is driven by aninterrupt provided from the host interface to the host processor which services theinterrupt. The host processor clears the interrupt by writing to a register in the memoryof the modem interface.
申请人：CIRRUS LOGIC, INC.
代理人：Robert P. Sabath,Frank D. Nguyen
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容