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The ADSP-21mod970 is a Multiport Internet Gateway Processor optimized for implementation of a complete V.34/56K modem. All data pump and controller functions can be implemented on a single device, offering the lowest power consumption and highest possible modem port density.
The ADSP-21mod970 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 programmable timer, Flag I/O, extensive interrupt capabilities and on-chip program and data memory.
The ADSP-21mod970 integrates 960 bytes of on-chip memory, configured as 192K words (24-bit) of program RAM, and 192K words (16-bit) of data RAM. Power-down circuitry is also provided to meet the low power needs of battery operated portable equipment. The ADSP-21mod970 is available in a 31 sq-mm., 304-lead PBGA package.
ADSP-21MOD970 Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . .0.3 V to +4.6 V Input Voltage . . . . . . . . . . . . . . . . . . . 0.5 V to VDD + 0.5 V Output Voltage Swing . . . . . . . . . . . . . 0.5 V to VDD + 0.5 V Storage Temperature Range . . . . . . . . . .65°C to +150°C
ADSP-21MOD970 Features
PERFORMANCE Complete Single-Chip Multiport Internet Gateway Processor (No External Memory Required) Implements Six Modem Channels in One Package Each Processor Can Implement V.34/V.90 Data/Fax Modem (Includes Datapump and Controller) 312 MIPS Sustained Performance, 19 ns Instruction Time @ 3.3 V Open Architecture Extensible to Voice Over IP and Other Applications Low Power Dissipation, 100 mW (Typical) per Digital Modem Processor Power-Down Mode Featuring Low CMOS Standby Power Dissipation INTEGRATION ADSP-2100 Family Code Compatible, with Instruction Set Extensions 960K Bytes of On-Chip RAM, Configured as 576K Bytes of Program Memory and 384K Bytes of Data Memory Dual Purpose Program Memory for Both Instruction and Data Storage 304-Ball PBGA with a 1.45 Square Inch (961 sq. mm) Footprint SYSTEM CONFIGURATION 16-Bit Internal DMA Port for High Speed Access to On- Chip Memory (Mode Selectable) Programmable Multichannel Serial Port Supports 24 Channels/32 Channels Two Double-Buffered Serial Ports with Companding Hardware and Automatic Data Buffering Separate RESET Pins for Each Internal Processor