參數(shù)資料
型號： NGAM386SX-40
廠商： Advanced Micro Devices, Inc.
英文描述： High-Performance, Low-Power, Embedded Microprocessors
中文描述： 高性能，低功耗，嵌入式微處理器
文件頁數(shù)： 3/30頁
文件大?。?/td> 582K
代理商： NGAM386SX-40
F I N A L
Am386SX/SXL/SXLV Microprocessors Data Sheet
3
BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
True Static Operation
(Am386SXL/SXLV Only)
The Am386SXL/SXLV microprocessor incorporates a
true static design. Unlike dynamic circuit design, the
Am386SXL/SXLV device eliminates the minimum op-
erating frequency restriction. It may be clocked from its
maximum speed all the way down to 0 MHz (DC). Sys-
tem designers can use this feature to design portable
applications with long battery life.
Standby Mode (Am386SXL/SXLV Only)
The true static design of the Am386SXL/SXLV micro-
processor allows for a Standby Mode. At any operating
speed, the microprocessor will retain its state (i.e., the
contents of all its registers). By shutting off the clock
completely, the device enters Standby Mode. Since
power consumption is proportional to clock frequency,
operating power consumption is reduced as the fre-
quency is lowered. In Standby Mode, typical current
draw is reduced to less than 20 microamps at DC. Not
only does this feature save battery life, but it also sim-
plifies the design of power-conscious portable applica-
tions in the following ways.
I
Eliminates the need for software in BIOS to save
and restore the contents of registers.
I
Allows simpler circuitry to control stopping of the
clock since the system does not need to know
the state of the processor.
Lower Operating Icc
(Am386SXL/SXLV Only)
True static design also allows lower operating Icc when
operating at any speed.
Performance on Demand
(Am386SXL/SXLV Only)
The Am386SXL/SXLV microprocessor retains its state
at any speed from 0 MHz (DC) to its maximum operat-
ing speed. With this feature, system designers may
vary the operating speed of the system to extend the
battery life in portable systems.
Pipeline/
Bus Size
Control
Effective Address Bus
Effective Address Bus
Dedicated ALU Bus
Barrel
Shifter,
Adder
Multiply/
Divide
Register
File
Decode
and
Sequencing
Control
ROM
Instruction
Decoder
3-Decoded
Instruction
Queue
Prefetcher/
Limit
Checker
Limit and
Attribute
PLA
Descriptor
Registers
3-Input
Adder
Page
Cache
Adder
Request
Prioritizer
Address
Driver
Protection
Test Unit
ALU
Control
ALU
Control
Instruction
Predecode
Instruction
Prefetch
Code
Stream
32
32
32
25
32
Segmentation Unit
Paging Unit
Bus Control
HOLD, INTR,
NMI, ERROR,
BUSY, RESET,
HLDA, FLT,
SMI*, IIBEN*
BHE, BLE,
A23-A1
M/IO, D/C,
W/R, LOCK,
ADS, NA,
READY,
SMIADS*,
SMIRDY*
D15-D0
* – On Am386SXLV only
32 Bit
Control
and
Attribute
PLA
MUX/
Trans-
ceivers
Status
Flags
16-Byte
Code
Queue
D
P
C
C
L
Internal Control Bus
32
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NGAM386SXL-25 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, Low-Power, Embedded Microprocessors
NGAM386SXL-33 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, Low-Power, Embedded Microprocessors
NGAM386SXL-40 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, Low-Power, Embedded Microprocessors
NGAM386SXLV-25 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, Low-Power, Embedded Microprocessors
NGAM386SXLV-33 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:High-Performance, Low-Power, Embedded Microprocessors
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