A low cost, high speed portable communications device: a case study using IDT RV4640 microprocessor & IDT77903 ATM card

Summary form only given, as follows. We present a design for a low cost but powerful and high speed communications device powered by IDT´s RV4640 as its processing engine. The device can achieve very high speed, thanks to the PCI bus compatible IDT ATM NIC. The device could be used as a two way pager, a set-top box, an Internet terminal, a personal digital assistant or as a video phone. The RV4640 is a very affordable 64 bit RISC processor that executes 175 dhrystone MIPS at 133 MHz. The RV4640 can be connected to a System Interface Chip which will provide I/O and memory control. The IDT77903 ATM card is a full duplexed 25 Mbps NIC with a PCI bus interface and it costs less than $100 (US). Integrating this card into our device as a network interface will make highspeed videoconferencing and multimedia applications easily implementable.