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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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ADSP-21MOD870 Datenblatt(PDF) 1 Page - Analog Devices |
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ADSP-21MOD870 Datenblatt(HTML) 1 Page - Analog Devices |
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1 / 32 page  REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADSP-21mod870 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1999 Internet Gateway Processor FUNCTIONAL BLOCK DIAGRAM SERIAL PORTS SPORT 1 SPORT 0 MEMORY PROGRAMMABLE I/O AND FLAGS BYTE DMA CONTROLLER 16K 24 PM 8K 24 OVERLAY 1 8K 24 OVERLAY 2 TIMER ADSP-2100 BASE ARCHITECTURE SHIFTER MAC ALU ARITHMETIC UNITS POWER-DOWN CONTROL PROGRAM SEQUENCER DAG 2 DAG 1 DATA ADDRESS GENERATORS PROGRAM MEMORY ADDRESS DATA MEMORY ADDRESS PROGRAM MEMORY DATA DATA MEMORY DATA EXTERNAL DATA BUS EXTERNAL ADDRESS BUS INTERNAL DMA PORT EXTERNAL DATA BUS OR FULL MEMORY MODE HOST MODE 16K 16 DM 8K 16 OVERLAY 1 8K 16 OVERLAY 2 FEATURES PERFORMANCE Complete Single-Chip Internet Gateway Processor (No External Memory Required) Implements V.34/V.90 Data/FAX Modem Including Controller and Datapump 19 ns Instruction Cycle Time @ 3.3 V, 52 MIPS Sustained Performance Open Architecture Platform Extensible to Voice Over IP and Other Applications Low Power Dissipation, 80 mW (Typical) for Digital Modem Power-Down Mode Featuring Low CMOS Standby Power Dissipation INTEGRATION ADSP-2100 Family Code Compatible, with Instruction Set Extensions 160K Bytes of On-Chip RAM, Configured as 32K Words On-Chip Program Memory RAM and 32K Words On- Chip Data Memory RAM Dual Purpose Program Memory for Both Instruction and Data Storage Independent ALU, Multiplier/Accumulator and Barrel Shifter Computational Units Two Independent Data Address Generators Powerful Program Sequencer Provides Zero Overhead Looping Conditional Instruction Execution Programmable 16-Bit Interval Timer with Prescaler 100-Lead LQFP with 0.4 Square Inch (256 mm2) Footprint SYSTEM INTERFACE 16-Bit Internal DMA Port for High Speed Access to On- Chip Memory (Mode Selectable) Two Double-Buffered Serial Ports with Companding Hardware and Automatic Data Buffering Programmable Multichannel Serial Port Supports 24/32 Channels Automatic Booting of On-Chip Program Memory Through Internal DMA Port Six External Interrupts 13 Programmable Flag Pins Provide Flexible System Signaling ICE-Port™ Emulator Interface Supports Debugging in Final Systems GENERAL DESCRIPTION The ADSP-21mod870 is a single-chip Internet gateway pro- cessor optimized for implementation of a complete V.34/56K modem. All data pump and controller functions can be imple- mented on a single chip, offering the lowest power consumption and highest possible modem port density. The ADSP-21mod870, shown in the Functional Block Dia- gram, 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-21mod870 integrates 160K bytes of on-chip memory configured as 32K words (24-bit) of program RAM, and 32K 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-21mod870 is available in 100-lead LQFP package. Fabricated in a high speed, low power, CMOS process, the ADSP-21mod870 operates with a 19 ns instruction cycle time. Every instruction can execute in a single processor cycle. The ADSP-21mod870’s flexible architecture and comprehen- sive instruction set allow the processor to perform multiple operations in parallel. In one processor cycle the ADSP-21mod870 can: • Generate the next program address • Fetch the next instruction • Perform one or two data moves • Update one or two data address pointers • Perform a computational operation ICE-Port is a trademark of Analog Devices, Inc. All other trademarks are the property of their respective holders . |
Ähnliche Teilenummer - ADSP-21MOD870_15 |
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Ähnliche Beschreibung - ADSP-21MOD870_15 |
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