User`s manual

DIGITAL-LOGIC AG MPC40/A/B/C, MPC41 Manual V1.4C
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4.9 Controllers
4.9.1 INTEL Processor Pentium-M
The Intel® Pentium® M processor is a high performance, low power mobile processor with several
micro-architectural enhancements over existing Intel mobile processors.
The following list provides some of the key features on this processor:
• 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 / 2 Mbyte second level cache with Advanced Transfer Cache Architecture
• Advanced Branch Prediction and Data Prefetch Logic
• Streaming SIMD Extensions 2 (SSE2)
• 400/533-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 0.13/0.09 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 proc-
essor 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 be-
fore an L1 cache requests occurs, resulting in reduced bus cycle penalties and improved performance. The
Streaming SIMD Extensions 2 (SSE2) enable 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 trac-
ing.
The Intel Pentium M processor’s 400-MHz processor system bus utilizes a split-transaction, deferred reply
protocol. The 400-MHz processor system bus uses Source-Synchronous Transfer (SST) of address and data
to improve performance by transferring data four times per bus clock (4X data transfer rate, as in AGP 4X).
Along with the 4X data bus, the address bus can deliver addresses two times per bus clock and is referred to
as a “double-clocked” or 2X address bus. Working together, the 4X data bus and 2X address bus provide a
data bus bandwidth of up to 3.2 Gbytes/second. The processor system bus uses Advanced Gunning Trans-
ceiver Logic (AGTL+) signal technology, a variant of GTL+ signalling technology with low power enhance-
ments.
Note: The term AGTL+ has been used for Assisted Gunning Transceiver Logic technology on other Intel
products.
4.9.1.1 Introduction
The processor features Enhanced Intel SpeedStep technology, which enables real-time dynamic switching
between multiple voltage and frequency points instead of two points supported on previous versions of Intel
SpeedStep technology. This results in optimal performance without compromising low power. The processor
features the Auto Halt, Stop-Grant, Deep Sleep, and Deeper Sleep low power states. The Intel Pentium M
processor utilizes socketable Micro Flip-Chip Pin Grid Array (Micro-FCPGA) and surface mount Micro Flip-
Chip Ball Grid Array (Micro-FCBGA) package technology. The Micro-FCPGA package plugs into a 479-hole,
surface-mount, Zero Insertion Force (ZIF) socket, which is referred to as the mPGA479M socket.
This document includes specifications for the Intel Pentium M processor at Highest Frequency Mode (HFM)
core frequencies of 1.30, 1.40, 1.50, and 1.60 GHz, the Low Voltage Intel Pentium M processor at HFM core
frequency of 1.10 GHz and the Ultra Low Voltage Intel Pentium M processor at HFM core frequency of 900
MHz.