Technical Manual "Thunderbird/MM” Version 1.2
12.08.2005
Page 9 of 48
1.4 Processor
Intel
®
Pentium
®
M Processor, 600 MHz … 2.1 GHz.
The Intel Pentium M processor is a high performance, low power mobile processor with several
micro-architectural enhancements over existing Intel mobile processors.
Some of the key features of this processor are:
•
Supports Intel Architecture with Dynamic Execution
•
High performance, low-power core
•
On-die, primary 32-kbyte instruction cache and 32-kbyte write-back data cache
•
On-die, 1-MByte second level cache with Advanced Transfer Cache Architecture
•
Advanced Branch Prediction and Data Prefetch Logic
•
Streaming SIMD Extensions 2 (SSE2)
•
400-MHz, Source-Synchronous processor system bus
•
Advanced Power Management features including Enhanced Intel
®
SpeedStep
®
technology
•
Micro-FCPGA and Micro-FCBGA packaging technologies
The Intel Pentium M processor is manufactured on Intel’s advanced 0.13-micron process technology
with copper interconnect. The processor maintains support for MMX™ technology and Internet
Streaming SIMD instructions and full compatibility with IA-32 software. The high performance core
features architectural innovations like Micro-op Fusion and Advanced Stack Management that
reduce the number of micro-ops handled by the processor. This results in more efficient scheduling
and better performance at lower power. The on-die 32-kB Level 1 instruction and data caches and
the 1-MB Level 2 cache with Advanced Transfer Cache Architecture enable significant performance
improvement over existing mobile processors. The processor also features a very advanced branch
prediction architecture that significantly reduces the number of mispredicted branches. The
processor’s Data Prefetch Logic speculatively fetches data to the L2 cache before an L1 cache
requests occurs, resulting in reduced bus cycle penalties and improved performance.
The Streaming SIMD Extensions 2 (SSE2) enables break-through levels of performance in
multimedia applications including 3-D graphics, video decoding/encoding, and speech recognition.
The new packed double-precision floating-point instructions enhance performance for applications
that require greater range and precision, including scientific and engineering applications and
advanced 3-D geometry techniques, such as ray tracing.
1.5 Northbridge
Intel
®
i82855GME with Chipset Graphics and Memory Controller Hub (GMCH)
•
Processor/Host Bus at 400 MHz
•
Memory System PC1600/PC2100/PC2700 DDR SDRAM (200/266/333MHz)
•
System Interrupts Intel 8259
•
Video Stream Decoder improved hardware motion compensation for MPEG2 and Software
DVD at 60 Fields/second and 30 frames/second full screen, encoding at low CPU utilization
•
Analog display support, 350-MHz integrated 24-bit RAMDAC that can drive a standard
progressive scan analog monitor with pixel resolution up to 1600 × 1200 at 85 Hz and up to
2048 × 1536 at 75 Hz
•
Dual independent pipe support
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