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ADSP-21MOD970

更新时间： 2024-11-10 23:28:07
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ADSP-21MOD970: Multiport Internet Gateway Processor Data Sheet (Rev. 0. 7/99)

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 浏览型号ADSP-21MOD970的Datasheet PDF文件第2页浏览型号ADSP-21MOD970的Datasheet PDF文件第3页浏览型号ADSP-21MOD970的Datasheet PDF文件第4页浏览型号ADSP-21MOD970的Datasheet PDF文件第5页浏览型号ADSP-21MOD970的Datasheet PDF文件第6页浏览型号ADSP-21MOD970的Datasheet PDF文件第7页 
Multiport Internet  
Gateway Processor  
a
ADSP-21mod970  
FEATURES  
PERFORMANCE  
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  
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  
GENERAL DESCRIPTION  
The ADSP-21mod970 is a Multiport 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 device, offering the lowest power consump-  
tion 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.  
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  
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 por-  
table equipment. The ADSP-21mod970 is available in a  
31 sq-mm., 304-lead PBGA package.  
FUNCTIONAL BLOCK DIAGRAM  
16  
55  
DATA<23:8>  
CLKIN  
GROUND  
27  
V
DD  
16  
4
IAD<15:0>  
IDMA CNTL  
MODEM  
CHANNEL  
2
MODEM  
CHANNEL  
3
MODEM  
CHANNEL  
4
MODEM  
CHANNEL  
5
MODEM  
CHANNEL  
6
4
4
8
4
SPORT0A  
SPORT1  
SPORT0B  
EMULATOR  
6
6
BR<5:0>  
MODEM  
CHANNEL  
1
BG<5:0>  
BGH<5:0>  
FLAGS  
ADSP-21mod970  
6
66  
6
IDMA CNTL = IAL, IRD, IWR, IACK  
FLAGS = FL<0:2>, PF<0:7>  
BUS CNTL = A0, BMS, PMS, DMS, CMS, IOMS, RD, WR  
EMULATOR = EMS, EINT, ELIN, EBR, EBG, ECLK,  
ELOUT, ERESET  
16  
16  
9
RESET<5:0>  
DATA<23:8>_1  
IAD<15:0>_1  
6
CLKOUT<5:0>  
EE<5:0>  
6
CLKIN_1,  
BUS CNTL_1  
6
IS<5:0>  
SPORT0A, SPORT0B = RFS0, DR0, DT0, SCLK0  
SPORT1 = RFS1, DR1, SCLK1, TFS1  
6
4
TFS0<5:0>  
DT1<5:0>  
IDMA CNTL_1  
6
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
World Wide Web Site: http://www.analog.com  
© Analog Devices, Inc., 1999  
1234567...32

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