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30054-33 PDF预览

30054-33

更新时间: 2024-11-25 22:06:35
品牌 Logo 应用领域
美国国家半导体 - NSC 微控制器和处理器外围集成电路微处理器
页数 文件大小 规格书
244页 4221K
描述
Geode⑩ GXm Processor Integrated x86 Solution with MMX Support

30054-33 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:SPGA, SPGA320,37X37Reach Compliance Code:unknown
风险等级:5.91Is Samacsys:N
其他特性:ALSO REQUIRES 3.3V SUPPLY地址总线宽度:32
位大小:32边界扫描:YES
外部数据总线宽度:32格式:FLOATING POINT
集成缓存:YESJESD-30 代码:S-CPGA-P320
JESD-609代码:e0长度:49.595 mm
低功率模式:YES端子数量:320
最高工作温度:85 °C最低工作温度:
封装主体材料:CERAMIC, METAL-SEALED COFIRED封装代码:SPGA
封装等效代码:SPGA320,37X37封装形状:SQUARE
封装形式:GRID ARRAY, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
电源:2.9,3.3 V认证状态:Not Qualified
座面最大高度:3.07 mm速度:233 MHz
子类别:Microprocessors最大压摆率:2850 mA
最大供电电压:3.05 V最小供电电压:2.75 V
标称供电电压:2.9 V表面贴装:NO
技术:CMOS温度等级:OTHER
端子面层:Tin/Lead (Sn/Pb)端子形式:PIN/PEG
端子节距:1.27 mm端子位置:PERPENDICULAR
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:49.595 mm
uPs/uCs/外围集成电路类型:MICROPROCESSORBase Number Matches:1

30054-33 数据手册

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April 2000  
Geode™ GXm Processor  
Integrated x86 Solution with MMX Support  
General Description  
The National Semiconductor® Geode™ GXm processor  
is an advanced 32-bit x86 compatible processor offering  
high performance, fully accelerated 2D graphics, a 64-bit  
synchronous DRAM controller and a PCI bus controller,  
all on a single chip that is compatible with Intel’s MMX  
technology.  
graphics accelerator provides pixel processing and ren-  
dering functions.  
A separate on-chip video buffer enables >30 fps MPEG1  
video playback when used together with the CS5530 I/O  
companion chip. Graphics and system memory accesses  
are supported by a tightly-coupled synchronous DRAM  
(SDRAM) memory controller. This tightly coupled memory  
subsystem eliminates the need for an external L2 cache.  
The GXm processor core is a proven design that offers  
competitive CPU performance. It has integer and floating  
point execution units that are based on sixth-generation  
technology. The integer core contains a single, six-stage  
execution pipeline and offers advanced features such as  
operand forwarding, branch target buffers, and extensive  
write buffering. A 16 KB write-back L1 cache is accessed  
in a unique fashion that eliminates pipeline stalls to fetch  
operands that hit in the cache.  
The GXm processor includes Virtual System Architec-  
ture® (VSA™ technology) enabling XpressGRAPHICS  
and XpressAUDIO subsystems as well as generic emula-  
tion capabilities. Software handler routines for the Xpress-  
GRAPHICS and XpressAUDIO subsystems can be  
included in the BIOS and provide compatible VGA and 16-  
bit industry standard audio emulation. XpressAUDIO tech-  
nology eliminates much of the hardware traditionally asso-  
ciated with audio functions.  
In addition to the advanced CPU features, the GXm pro-  
cessor integrates a host of functions which are typically  
implemented with external components. A full-function  
Geode™ GXm Processor Internal Block Diagram  
Write-Back  
Cache Unit  
Integer  
Unit  
FPU  
MMU  
C-Bus  
Internal Bus Interface Unit  
X-Bus  
Graphics  
Pipeline  
Memory  
Controller  
Display  
Controller  
PCI  
Controller  
Integrated  
Functions  
PCI Bus  
SDRAM Port  
CS5530  
(CRT/LCD TFT)  
National Semiconductor and Virtual System Architecture are registered trademarks of National Semiconductor Corporation.  
Geode and VSA are trademarks of National Semiconductor Corporation.  
For a complete listing of National Semiconductor trademarks, please visit www.national.com/trademarks.  
© 2000 National Semiconductor Corporation  
www.national.com  

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