Multiport Internet Gateway Processor - Analog Devices

The ADSP-21MOD980N is a multi-port Internet gateway processor optimized for implementation of a complete V.34/V.90 digital modem. All datapump and controller functions CAN be implemented on a single device, offering the lowest power consumption and highest possible modem port density. The ADSP-21MOD980N combines the ADSP-2100 Family base architecture (three computational units, data address generators, and a program sequencer) with two serial ports, a 16-bit internal DMA port, a byte DMA port, a program- mable Timer Flag I/O, extensive interrupt capabilities, and on-chip program and data memory. The ADSP-21MOD980N integrates 16 Mbits of on-chip memory, configured as 384 Kwords (24-bit) of program RAM, and 448 Kwords (16-bit) of data RAM. Power-down circuitry is also provided to reduce the average and standby power consumption of equipment which in turn reduces equipment cooling requirements. The ADSP-21MOD980N is available in a 35 mm x 35 mm, 352-lead PBGA package. Fabricated in a high-speed, low-power, CMOS process, the ADSP-21MOD980N operates with a 12.5 ns instruction cycle time. Every instruction CAN execute in a single proces- sor cycle. By Analog Devices, Inc.
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