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ADSP-21MOD870-110 Datasheet(PDF) 1 Page - Analog Devices |
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ADSP-21MOD870-110 Datasheet(HTML) 1 Page - Analog Devices |
1 / 6 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-21mod870-110 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 Software FEATURES ISDN B-Channel HDLC DATA Modulations CCITT V.90 (30k–56k) K56Flex™ (30k–56k) ITU-T V.34: 33600 Bits/s–2400 Bits/s CCITT V.32bis: 14400 Bits/s–7200 Bits/s CCITT V.32: 9600 Bits/s, 4800 Bits/s CCITT V.23 CCITT V.22/V.22bis: 2400, 1200, 600 Bits/s CCITT V.21: 300 Bits/s Bell 212A: 1200 Bits/s Bell 103: 300 Bits/s Start-Up Procedures: ITU-T V.8 Error Correction and Data Compression: CCITT V.42 Error Correction (LAPM and MNP2-4) CCITT V.42bis Data and MNP Class 5 Compression FAX Modem V.17/V.29/V.27ter/V.21 Channel 2 T.30 Protocol V.120 V.110 PPP Asynchronous Framing Support (RFC 1662) Low Power 80 mW Typical Active Low Power and Sleep Modes High Density 100-Lead LQFP Package On-Chip DS0/DS1 Interface Full Function DMA Port No External Memory Required 0.4 Square Inch per Complete Modem Port 3.3 V Supply Fully Upgradable RAM-Based Architecture Fast Download Full Image in 5 ms High Speed 16-Bit Port Link Bus Provides Simple Interface Between Host and Modem Pool INTRODUCTION The ADSP-21mod870-110 is a complete single chip. All data- pump and controller functions are implemented on a single 0.4 square-inch chip. This modem package allows the highest modem port density, while achieving the lowest power con- sumption in a software upgradable platform. The ADSP-21mod870-110 is designed for high density systems such as remote access servers (see Figure 1). Its high perfor- mance DSP core, large on-chip SRAM, TDM serials port and 16-bit DMA port provide efficient control and data communi- cation with minimal chip count. The modem software provides a number of data modulations, such as V.34, 56K bps PCM, and ISDN with a software upgrade path to future standards, and new applications, such as voice over network. The host interface allows system access to modem statistics such as call progress, connect speed and modulation parameters such as retrain count and symbol rate. ON-CHIP SRAM The ADSP-21mod870-110 processor integrates 160K bytes of on-chip memory. The modem datapump and controller soft- ware, as well as data storage, are contained in the on-chip SRAM. The SRAM cells are designed by Analog Devices. These cells are optimized for high speed digital signal processing and low power consumption. You can dynamically configure the ADSP- 21mod870 with software through the 16-bit DMA interface. DMA INTERFACE The 16-bit internal DMA port (IDMA port) provides transpar- ent, direct access to the on-chip RAM of the ADSP-21mod870 processor. This high speed access to on-chip memory simplifies control and data communication and system debug. Use the 16-bit DMA interface to dynamically configure the ADSP- 21mod870 with software. K56Flex is a trademark of Rockwell International and Lucent Technologies. |
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