參數(shù)資料
型號(hào): ADSP-21MOD980N-000
廠商: ANALOG DEVICES INC
元件分類: 通信及網(wǎng)絡(luò)
英文描述: CAP 27PF 100V 10% X7R AXIAL BULK M-MIL-PRF-39014
中文描述: SPECIALTY TELECOM CIRCUIT, PBGA352
封裝: 35 X 35 MM, PLASTIC, BGA-352
文件頁數(shù): 2/42頁
文件大小: 566K
代理商: ADSP-21MOD980N-000
2
6/2001
REV. PrB
For current information contact Analog Devices at (800) ANALOGD
ADSP-21mod980N
PRELIMINARY TECHNICAL DATA
GENERAL DESCRIPTION
The ADSP-21mod980N is a multi-port Internet gateway
processor optimized for implementation of a complete
V.34/V.90 digital modem. All datapump and controller
functions can be implemented on a single device, offering
the lowest power consumption and highest possible modem
port density.
The ADSP-21mod980N 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 program-
mable timer, Flag I/O, extensive interrupt capabilities, and
on-chip program and data memory.
The ADSP-21mod980N integrates 16 Mbits of on-chip
memory, configured as 384 Kwords (24-bit) of program
RAM, and 448 Kwords (16-bit) of data RAM. Power-down
circuitry is also provided to reduce the average and standby
power consumption of equipment which in turn reduces
equipment cooling requirements. The ADSP-21mod980N
is available in a 35 mm x 35 mm, 352-lead PBGA package.
Fabricated in a high-speed, low-power, CMOS process, the
ADSP-21mod980N operates with a 12.5 ns instruction
cycle time. Every instruction can execute in a single proces-
sor cycle.
The ADSP-21mod980N’s flexible architecture and com-
prehensive instruction set allow the processor to perform
multiple operations in parallel. In one processor cycle, the
ADSP-21mod980N 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
This takes place while the processor continues to:
Receive and transmit data through the two serial ports
Receive and/or transmit data through the internal
DMA port
Receive and/or transmit data through the byte DMA
port
Decrement timer
MODEM SOFTWARE
The following software is available as object code from
Analog Devices Inc.
ADSP-21mod Family Dynamic Internet Voice
Access
TM
(DIVA) Voice Over Network Solution.
ADSP-21mod980-210N Multiport Internet Gateway
Processor Modem Solution.
A complete system implementation requires the
ADSP-21mod980N device plus modem or voice software.
The modem software executes general modem control,
command sets, error correction, and data compression,
data modulations (for example, V.34 and V.90), and host
interface functions.The host interface allows system access
to modem statistics, such as call progress, connect speed,
retrain count, symbol rate, and other modulation
parameters.
The modem datapump and controller software reside in
on-chip SRAM and do not require additional memory. You
can configure the ADSP-21mod980N dynamically by
downloading software from the host through the 16-bit
IDMA interface. This SRAM-based architecture provides a
software upgrade path to other applications, such as
voice-over-IP, and to future standards.
DEVELOPMENT SYSTEM
Analog Devices' wide range of software and hardware devel-
opment tools supports the ADSP-218x N Series. The DSP
tools include an integrated development environment
(IDE), an evaluation kit, and a serial port emulator.
VisualDSP is an integrated development environment,
allowing for fast and easy development, debug and deploy-
ment. The VisualDSP project management environment
lets programmers develop and debug an application. This
environment includes an easy-to-use assembler that is based
on an algebraic syntax; an archiver (librarian/library
builder); a linker; a loader; a cycle-accurate, instruc-
tion-level simulator; a C compiler; and a C run-time library
that includes DSP and mathematical functions.
Debugging both C and assembly programs with the Visu-
alDSP debugger, programmers can:
View mixed C and assembly code (interleaved source and
object information)
Insert break points
Set conditional breakpoints on registers, memory, and
stacks
Trace instruction execution
Fill and dump memory
Source level debugging
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