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| 型號(hào)： | ADSP-2109 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection |
| 中文描述： | 無(wú)電容，NMOS管，150mA的低壓差穩(wěn)壓器的反向電流保護(hù) |
| 文件頁(yè)數(shù)： | 1/36頁(yè) |
| 文件大小： | 333K |
| 代理商： | ADSP-2109 |
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FUNCT IONAL BLOCK DIAGRAM
ADDRESS
BUS
MDATA
MEMORY
EXTERNAL
BUS
ADSP-2100 CORE
ARITHMETIC UNITS
SHIFTER
MAC
ALU
MEMORY
SERIAL PORTS
SPORT 0
SPORT 1
DATA ADDRESS
GENERATORS
DAG 1
DAG 2
PROGRAM
SEQUENCER
PROGRAM MEMORY ADDRESS
DATA MEMORY ADDRESS
PROGRAM MEMORY DATA
DATA MEMORY DATA
TIMER
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
LowCost DSP Mcrocomputers
ADSP-2104/ADSP-2109
SUMMARY
16-Bit Fixed-Point DSP Microprocessors with
On-Chip Memory
Enhanced Harvard Architecture for Three-Bus
Performance: Instruction Bus & Dual Data Buses
Independent Computation Units: ALU, Multiplier/
Accumulator, and Shifter
Single-Cycle Instruction Execution & Multifunction
Instructions
On-Chip Program Memory RAM or ROM
& Data Memory RAM
Integrated I/O Peripherals: Serial Ports and Timer
FEATURES
20 MIPS, 50 ns Maximum Instruction Rate
Separate On-Chip Buses for Program and Data Memory
Program Memory Stores Both Instructions and Data
(Three-Bus Performance)
Dual Data Address Generators with Modulo and
Bit-Reverse Addressing
Efficient Program Sequencing with Zero-Overhead
Looping: Single-Cycle Loop Setup
Automatic Booting of On-Chip Program Memory from
Byte-Wide External Memory (e.g., EPROM )
Double-Buffered Serial Ports with Companding Hardware,
Automatic Data Buffering, and Multichannel Operation
Three Edge- or Level-Sensitive Interrupts
Low Power IDLE Instruction
PLCC Package
Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
GE NE RAL DE SCRIPT ION
T he ADSP-2104 and ADSP-2109 processors are single-chip
microcomputersoptimized for digital signal processing (DSP)
and other high speed numeric processing applications. T he
ADSP-2104/ADSP-2109 processors are built upon a common
core. Each processor combines the core DSP architecture—
computation units, data address generators, and program
sequencer—with differentiating features such ason-chip
program and data memory RAM (ADSP-2109 contains 4K
words of program ROM), a programmable timer, and two
serial ports.
Fabricated in a high speed, submicron, double-layer metal
CMOS process, the ADSP-2104/ADSP-2109 operates at
20 MIPS with a 50 ns instruction cycle time. T he ADSP-2104L
and ADSP-2109L are 3.3 volt versions which operate at
13.824 MIPS with a 72.3 ns instruction cycle time. Every
instruction can execute in a single cycle. Fabrication in CMOS
results in low power dissipation.
T he ADSP-2100 Family’s flexible architecture and compre-
hensive instruction set support a high degree of parallelism.
In one cycle the ADSP-2104/ADSP-2109 canperform all
of thefollowing operations:
Generate the next program address
Fetch the next instruction
Perform one or two data moves
Update one or two data address pointers
Perform a computation
Receive and transmit data via one or two serial ports
T he ADSP-2104 contains 512 words of program RAM, 256
words of data RAM, an interval timer, and two serial ports.
T he ADSP-2104L is a 3.3 volt power supply version of the
ADSP-2104; it is identical to the ADSP-2104 in all other
characteristics.
T he ADSP-2109 contains 4K words of program ROM and
256 words of data RAM, an interval timer, and two serial ports.
T he ADSP-2109L is a 3.3 volt power supply version of the
ADSP-2109; it is identical to the ADSP-2109 in all other
characteristics.
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