Communication Protocol Engineering of Wireless Networks. Modeling and Optimization

The PQ I family has been used for ATM and Ethernet edge devices such as routers for the home and small office (SOHO) market, residential gateways, ASDL and cable modems, and similar applications. The CPM or QUICC engine incorporates two unique and powerful communications controllers. The Serial Communication Controller (SCC) is a flexible serial interface capable of implementing many serial-based communications protocols, including Ethernet, HDLC/SDLC, AppleTalk, synchronous and asynchronous UARTs, IrDA, and other bit stream data. The Serial Management Controller (SMC) is a module capable of similar serial-communications protocols, and includes support for ISDN, serial UART, and SPI protocols. Using a combination of these SCCs and SMCs, it is possible to create very flexible I/O combinations. An internal time-division multiplexer even allows these interfaces to implement channelized communications such as T1 and E1 I/O. Table 3-3 summarizes a small sampling of the PQ I product line. Table 3-3. Freescale Select PowerQUICC I Highlights Feature MPC850 MPC860 MPC875 MPC885 Core/speeds PowerPC 8xx PowerPC 8xx PowerPC 8xx PowerPC 8xx Up to 80MHz Up to 80MHz Up to 133MHz Up to 133MHz DRAM controller Y Y Y Y USB Y N Y Y SPI controller Y Y Y Y I2C controller Y Y Y Y SCC controllers 2 4 1 3 SMC controllers 2 2 1 1 Security engine N N Y Y Dedicated Fast Ethernet controller N N 2 2 The next step up in the Freescale PowerPC product line is PowerQUICC II ...»