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GXM Datasheet(PDF) 91 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # GXM
Description  Geode??GXm Processor Integrated x86 Solution with MMX Support
PDF  244 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

GXM Datasheet(HTML) 91 Page - National Semiconductor (TI)

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Revision 3.1
91
www.national.com
4.0
Integrated Functions
The Geode GXm processor integrates a memory control-
ler, graphics pipeline and display controller in a Unified
Memory Architecture (UMA). UMA simplifies system
designs and significantly reduces overall system costs
associated with high chip count, small footprint notebook
designs. Performance degradation in traditional UMA sys-
tems is reduced through the use of National Semiconduc-
tor’s Display Compression Technology (DCT).
Figure 4-1 shows the major functional blocks of the GXm
processor and how the internal bus interface unit operates
as the interface between the processor’s core units and
the integrated functions.
This section details how the integrated functions and inter-
nal bus interface unit operate and their respective regis-
ters.
Figure 4-1. Internal Block Diagram
Write-Back
Unit
FPU
Internal Bus Interface Unit
Graphics
Memory
Display
PCI
SDRAM Port
CS5530
PCI Bus
Integer
Cache Unit
Integrated
Functions
MMU
(CRT/LCD TFT)
X-Bus
Pipeline
Controller
Controller
Controller
C-Bus



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