STLS2F01 datasheet(1/48 Pages) STMICROELECTRONICS

Part #	STLS2F01

Description	Loongson 2F: High performance 64-bit superscalar MIPS® microprocessor

PDF	48 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Preliminary Data

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

May 2008

Rev 1

1/48

1

STLS2F01

Loongson 2F:

High performance 64-bit superscalar MIPS® microprocessor

Features

■ 64-bit superscalar architecture

■ 900 MHz clock frequency

■ Single/double precision floating-point units

■ New streaming multimedia instruction set

support (SIMD)

■ 64 Kbyte instruction cache, 64 Kbyte data

cache, on-chip 512 Kbyte unified L2 cache

■ On chip DDR2-667 and PCI-X controller

■ 4 W @ 900 MHz power consumption:

– Best in class for power management

– Voltage/frequency scaling

– Stand-by mode support

– L2 cache disable/enable option

■ Leading edge 90 nm process technology

■ 27x27 heat spreader flip-chip BGA package

■ MIPS based instruction set (MIPS III

compatible)

Description

The STLS2F01 is a MIPS based 64-bit

superscalar microprocessor, able to issue four

instructions per clock cycle among six functional

units: two integer, two single/double-precision

floating-point, one 64bit SIMD and one load/store

unit.

The micro architecture is organized with nine-

stage of pipeline and support of dynamic branch

prediction.

The memory hierarchy is composed by the first

level of 64 Kbyte 4-way set associative caches for

instructions and data, the second level of

512 Kbyte unified 4-way set associative cache

and the memory management unit (MMU) with

translation lookaside buffer (TLB).

The Loongson microprocessor family is the

outcome of a successful collaboration started in

2004 between STMicroelectronics and the

Institute of Computing Technology, part of the

Chinese Academy of Science. Loongson

microprocessors were co-developed by

STMicroelectronics and the Institute of

Computing Technology to address all the

applications requiring high level of performance

and low power dissipation.

Compared to the STLS2E02 processor, the

STLS2F01 has an enhanced architecture

providing higher performance, reduced power

consumption, integrated DDR2 memory controller

and PCI-X bus interface.

HFCBGA452 (27x27x2.9mm)

Table 1.

Device summary

Part numbers

Package

Packing

STLS2F01

HFCBGA452 (27x27x2.9mm)

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