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參數(shù)資料
| 型號： | ADMC201 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Motion Coprocessor(動作協(xié)處理器) |
| 中文描述： | 運動協(xié)處理器（動作協(xié)處理器） |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 193K |
| 代理商： | ADMC201 |
a
ADMC201
FUNCT IONAL BLOCK DIAGRAM
EMBEDDED
CONTROL
SEQUENCER
CLK
INTERNAL
REFERENCE
REFOUT
11-BIT
A/D
CONVERTER
REFIN
CONVST
U
V
W
MULTIPLEXER
EXPANSION
BLOCK
AUX0
AUX1
AUX2
AUX3
12-BIT
PWM TIMER
BLOCK
PWMSYNC
A
AP
B
BP
C
CP
STOP
CONTROL
REGISTERS
VECTOR
TRANSFORMATION
BLOCK
PROG.
DIGITAL
I/O
PORT
PIO 0–5
DATABUS
CONTROL BUS
RESET
WR
A0–3
RD
CS
IRQ
D0–D11
ADMC201
Only
ADMC201 Only
AUX
Motion Coprocessor
FEATURES
Analog Input Block
11-Bit Resolution Analog-to-Digital (A/D) Converter
7 Single-Ended (SE) Analog Inputs
4 Simultaneously Sampled Analog Inputs
Expansion with 4 Multiplexed Inputs
3.2
m
s Conversion Time/Channel
0 V–5 V Analog Input Range
Internal 2.5 V Reference
PWM Synchronized Sampling Capability
12-Bit PWM Timer Block
Three-Phase Center-Based PWM
1.5 kHz–25 kHz PWM Switching Frequency Range
Programmable Deadtime
Programmable Pulse Deletion
PWM Synchronized Output
External PWM Shutdown
Vector Transformation Block
12-Bit Vector Transformations
Forward and Reverse Clarke Transformations
Forward and Reverse Park Rotations
2.9
m
s Transformation Time
Programmable Digital I/O Port
6 Bit Configurable Digital I/O
Change of State Interrupt Support
DSP & Microcontroller Interface
12 Bit Memory Mapped Registers
Twos Complement Data Format
6.25 MHz to 25 MHz Operating Clock Range
68-Pin PLCC Package
Single 5 V DC Power Supply
Industrial Temperature Range
Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
REV. A
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.
GE NE RAL DE SCRIPT ION
T he ADMC201 is a motion coprocessor that can be used with
either microcontrollers or digital signal processors (DSP). It
provides the functionality that is required to implement a digital
control system. In a typical application, the DSP or micro-
controller performs the control algorithms (position, speed,
torque and flux loops) and the ADMC201 provides the neces-
sary motor control functions: analog current data acquisition,
vector transformation, digital inputs/outputs, and PWM drive
signals.
PRODUCT HIGHLIGHT S
Simultaneous Sampling of Four Inputs
A four channel sample and hold amplifier allows three-phase
motor currents to be sampled simultaneously, reducing errors
from phase coherency. Sample and hold acquisition time is
1.6
μ
s and conversion time per channel is 3.2
μ
s (using a 12.5 MHz
system clock).
Flexible Analog Channel Sequencing
T he ADMC201 supports acquisition of 2, 3, or 4 channels per
group. Converted channel results are stored in registers and the
data can be read in any order. T he sampling and conversion
time for two channels is 8
μ
s, three channels is 11.2
μ
s, and four
channels is 14.4
μ
s (using a 12.5 MHz system clock).
E mbedded Control Sequencer
T he embedded control sequencer off-loads the DSP or micro-
processor, reducing the instructions required to read analog
input channels, control PWM timers and perform vector trans-
formations. T his frees the host processor for performing control
algorithms.
Fast DSP/Microprocessor Interface
T he high speed digital interface allows direct connection to
16-bit digital signal processors and microprocessors. T he
ADMC201 has 12 bit memory mapped registers with twos
complement data format and can be mapped directly into the
data memory map of a DSP. T his allows for a single instruction
read and write interface.
Integration
T he ADMC201 integrates a four channel simultaneous sam-
pling analog-to-digital converter, four channel analog multi-
plexer, analog reference, vector transformation, six digital
inputs/outputs, and three-phase PWM timers into a 68-pin
PLCC. Integration reduces cost, board space, power consump-
tion, and design and test time.
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