ST100 STMICROELECTRONICS [STMicroelectronics], ST100 Datasheet

ST100

Manufacturer Part Number

ST100

Description

ST100 DSP CORES

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheet

1.ST100.pdf (3 pages)

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September 2004

State-of-the-art DSP core architecture

– Complete & optimized memory systems

– Multicore solutions

– Standard or specific tightly coupled peripher-

Advanced Load/store Architecture

– Regular and efficient.

– Optimized for programming in ‘C/C++/EC++’

Two Instruction Sets

– GP16, a 16-bit instruction set.

– GP32, a 32-bit instruction set.

Three Instruction Modes

– GP16: 2-way superscalar, for compact micro-

– GP32: 2-way superscalar, for high perfor-

– SLIW: one SLIW per cycle, where a SLIW

– GP32 instruction words. This mode is for high

Predicated Execution For Most Instructions

– Removes needs of conditional branches.

– Compact coding and increased instruction

Flexible Data Format

– The ST100 supports the following data types:

– Supports little Endian for data and program.

Circular And Bit-reversed DSP Addressing

Modes

– Facilitates the implementation of the DSP al-

Arithmetic Capability

– 40-bit and 32-bit arithmetic.

– Packed Arithmetic 2 x 16-bit (SIMD).

– Saturating (Clamping) and/or Rounding op-

Application Oriented Instructions

FEATURES

als libraries

languages.

controller codes.

mance microcontroller codes.

(Scoreboarded Long Instruction Word), is a

bundle of four

performance vector codes (DSP loops).

level parallelism.

– 16-bit, 32-bit and 40-bit unsigned/signed

– 16-bit, 32-bit, and 40-bit signed fractional.

– Signed and unsigned byte and Bit.

gorithms like the FIR filters and the FFT.

tions

integer.

STMicroelectronics' innovative ST100® DSP pro-

cessor core architecture has been conceived spe-

cifically for embedded applications in custom

system-on-chip products for demanding markets

like cellular phones, hard disk drives, engine man-

agement units, telecommunication systems and

advanced multimedia products. A completely new

design, the ST100® architecture combines in a

single core the advantages of a 16-bit instruction

word for code compactness, a 32-bit instruction

word for MCU performance and a 128-bit SLIW in-

struction word for high DSP performance. The

ST100® core is also scaleable, so it can be imple-

mented in many ways, ranging from low power de-

vices

performance devices with a maximum of parallel-

ism. Building on ST's experience in embedded

cores, the ST100® architecture is based on an

analysis of the real needs of system designers and

software engineers in some of the fastest-moving

segments of the industry, where high perfor-

mance, low power consumption and fast time to

market are all essential.

– Useful instructions for ETSI (European Tele-

General usage instructions:

Hardware Loop Controllers

– Zero cycles overhead for continuous data

– Three nestable loops.

Memory Space

– 32-bit addressing range, 4 Gbytes of memory

Interrupt, Trap And Context Switching

– Fast response to external events or system

Protection System

– User mode and Supervisor mode.

Power Saving

– Four "IDLE" modes performing power saving

communications Standards Institute) primi-

tives in GP32 and GP16:

– VITERBI...

processing.

space.

errors.

operations.

DESCRIPTION

for

portable

ST100 DSP CORES

products

ST100

DATA BRIEF

very

Rev. 1

high

1/3

Related parts for ST100

ST100 Summary of contents

Page 1

... MCU performance and a 128-bit SLIW in- struction word for high DSP performance. The ST100® core is also scaleable can be imple- mented in many ways, ranging from low power de- vices for ...

Page 2

ST120 Table 1. Revision History Date Revision September 2004 2/3 1 First Issue Description of Changes ...

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America ST100,STCC are trademarks of STMicroelectronics All other names are the property of their respective owners © ...

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ST100 STMICROELECTRONICS [STMicroelectronics], ST100 Datasheet

ST100

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