a
MultiPort Internet
Gateway Processor
ADSP-21mod980
FEATURES
PERFORMANCE
Complete Single-Chip MultiPort Internet Gateway
Processor (No External Memory Required)
Implements Sixteen Modem Channels or Forty Voice
Channels in One Package
Each Processor Can Implement One V.34/V.90 Data/
Fax Modem (Includes Datapump and Controller)
Standard Power Version: 600 MIPS Sustained Performance, 13.3 ns Instruction Time @ 2.75 V (Internal)
Low Power Version: 600 MIPS Sustained Performance,
13.3 ns Instruction Time @ 1.80 V (Internal)
Open Architecture Extensible to Voice-over-Network
(VoN) and Other Applications
Low Power Dissipation, 45 mW (Typical) Per Channel
Power-Down Mode Featuring Low CMOS Standby
Power Dissipation
INTEGRATION
ADSP-2100 Family Code-Compatible, with Instruction
Set Extensions
2.00M Bytes of On-Chip SRAM, Configured as 1.125M
Bytes of Program Memory and 0.875M Bytes of Data
Memory
Dual-Purpose Program Memory, for Both Instruction
and Data Storage
352-Ball PBGA with a 1.9 Square Inch (1225 Square mm)
Footprint
SYSTEM CONFIGURATION
16-Bit Internal DMA Port for High-Speed Access to
On-Chip Memory (Mode-Selectable)
Programmable Multichannel Serial Port Supports
24/32 Channels
Two Double-Buffered Serial Ports with Companding
Hardware and Automatic Data Buffering
Separate RESET Pins for Each Internal Processor
FUNCTIONAL BLOCK DIAGRAM
DATA<23:8>,
A<0>
17
CLKIN
IAD<15:0>,
IDMA CNTL
PF<0:2>
/MODE A:C
20
20
218x
1
SPORT0A
SPORT1
EMULATOR
IAD<15:0>,
IDMA CNTL
3
218x
2
218x
3
218x
4
4
218x
5
218x
6
218x
7
218x
8
4
SPORT0B
4
8
REV. 0
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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.
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Tel: 781/329-4700
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Fax: 781/326-8703
© Analog Devices, Inc., 2000
