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參數(shù)資料
| 型號： | ADSP-2187L |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 數(shù)字信號處理 |
| 英文描述： | DSP（Digital Signal Processing）Microcomputer(數(shù)字信號處理控制器) |
| 中文描述： | DSP（數(shù)字信號處理），微機（數(shù)字信號處理控制器） |
| 文件頁數(shù)： | 2/4頁 |
| 文件大小： | 79K |
| 代理商： | ADSP-2187L |
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ADSP-2187L
–2–
DATA
TECHNICAL
T he ADSP-2187L’s flexible architecture and comprehensive in-
struction set allow the processor to perform multiple operations
in parallel. In one processor cycle the ADSP-2187L 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
T his 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
DE VE LOPME NT SY ST E M
T he ADSP-2100 Family Development Software, a complete set
of tools for software and hardware system development, sup-
ports the ADSP-2187L. T he System Builder provides a high
level method for defining the architecture of systems under de-
velopment. T he Assembler has an algebraic syntax that is easy
to program and debug. T he Linker combines object files into an
executable file. T he Simulator provides an interactive instruc-
tion-level simulation with a reconfigurable user interface to dis-
play different portions of the hardware environment.
A PROM Splitter generates PROM programmer compatible
files. T he C Compiler, based on the Free Software Foundation’s
GNU C Compiler, generates ADSP-2187L assembly source
code. T he source code debugger allows programs to be cor-
rected in the C environment. T he Runtime Library includes over
100 ANSI-standard mathematical and DSP-specific functions.
T he EZ-K IT Lite is a hardware/software kit offering a complete
development environment for the entire ADSP-21xx family: an
ADSP-218x based evaluation board with PC monitor software
plus Assembler, Linker, Simulator, and PROM Splitter soft-
ware. T he ADSP-218x EZ-K IT Lite is a low cost, easy to use
hardware platform on which you can quickly get started with
your DSP software design. T he EZ-K IT Lite includes the fol-
lowing features:
33 MHz ADSP-218x
Full 16-bit Stereo Audio I/O with AD1847 SoundPort
Codec
RS-232 Interface to PC with Windows 3.1 Control Software
EZ-ICE
Connector for Emulator Control
DSP Demo Programs
T he ADSP-218x EZ-ICE
Emulator aids in the hardware de-
bugging of ADSP-2187L system. T he emulator consists of hard-
ware, host computer resident software and the target board
connector. T he ADSP-2187L integrates on-chip emulation sup-
port with a 14-pin ICE-Port interface. T his interface provides a
simpler target board connection requiring fewer mechanical
clearance considerations than other ADSP-2100 Family
EZ-ICEs. T he ADSP-2187L device need not be removed from
the target system when using the EZ-ICE, nor are any adapters
needed. Due to the small footprint of the EZ-ICE connector, emu-
lation can be supported in final board designs.
T he EZ-ICE performs a full range of functions, including:
In-target operation
Up to 20 breakpoints
Single-step or full-speed operation
Registers and memory values can be examined and altered
PC upload and download functions
Instruction-level emulation of program booting and execution
Complete assembly and disassembly of instructions
C source-level debugging
See “Designing An EZ-ICE-Compatible T arget System” in the
ADSP-2100 Family EZ-Tools Manual
(ADSP-2181 sections) as
well as the “Designing an EZ-ICE compatible System” section
of this data sheet for the exact specifications of the EZ-ICE tar-
get board connector.
Additional Information
T his data sheet provides a general overview of ADSP-2187L
functionality. For additional information on the architecture and
instruction set of the processor, refer to the
ADSP-2100 Family
User’s Manual
. For more information about the development
tools, refer to the ADSP-2100 Family Development T ools Data
Sheet.
ARCHIT E CT URE OVE RVIE W
T he ADSP-2187L instruction set provides flexible data moves
and multifunction (one or two data moves with a computation)
instructions. Every instruction can be executed in a single pro-
cessor cycle. T he ADSP-2187L assembly language uses an alge-
braic syntax for ease of coding and readability. A comprehensive
set of development tools supports program development.
SERIAL PORTS
SPORT 1
SPORT 0
MEMORY
PROGRI/O
FAND
CBYTE DMA
16K
3
24 PM
8K
3
24 OVERLAY 1
8K
3
24 OVERLAY 2
TIMER
ADSP-2100 BASE
ARCHITECTURE
SHIFTER
MAC
ALU
PCONTROL
PROGRAM
DAG 2
DAG 1
GENERATORS
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
EXDATA
BUS
ADDRESS
BUS
INDMA
PORT
EDATA
BUS
OR
FUL MODE
HOST MODE
16K
3
24 PM
8K
3
16 OVERLAY 1
8K
3
16 OVERLAY 2
Figure 1. Functional Block Diagram
Figure 1 is an overall block diagram of the ADSP-2187L. T he
processor contains three independent computational units: the
ALU, the multiplier/accumulator (MAC) and the shifter. T he
computational units process 16-bit data directly and have provi-
sions to support multiprecision computations. T he ALU per-
forms a standard set of arithmetic and logic operations; division
primitives are also supported. T he MAC performs single-cycle
multiply, multiply/add and multiply/subtract operations with
40 bits of accumulation. T he shifter performs logical and arith-
metic shifts, normalization, denormalization and derive expo-
nent operations.
T he shifter can be used to efficiently implement numeric for-
mat control including multiword and block floating-point
representations.
*EZ-ICE and SoundPort are registered trademarks of Analog Devices, Inc.
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