32-bit RISC microprocessor
INTEGRATED CIRCUITS
PR31700 32-bit RISC microprocessor
Preliminary specification Supersedes data of 1997 Dec 15 1998 Ma...
Description
INTEGRATED CIRCUITS
PR31700 32-bit RISC microprocessor
Preliminary specification Supersedes data of 1997 Dec 15 1998 May 13
Philips Semiconductors
Philips Semiconductors
Preliminary specification
32-bit RISC microprocessor
PR31700
GENERAL DESCRIPTION
The PR31700 is a single-chip digital ASSP (Application Specific Stand Product) used in HPCs (Handheld Personal Computers), Palm-size PCs, Screenphones, Smartphones, and other vertical market applications in the mobile computing and communication markets. The PR31700 consists of system support logic, integrated with the PR3901 Processor Core designed by Philips Semiconductors.
Built-in peripheral circuit
– Clock generator with built-in eightfold-frequency phase-locked loop (PLL) – Four-stage write buffer – A high performance and flexible Bus Interface Unit – Multiple DMA channels – Memory controller for DRAM, HDRAM, SDRAM, SRAM, ROM, Flash Memory and PCMCIA – Power management unit – Big / Little endian
FEATURES
R3000A-based PR3901 Processor Core
– RISC architecture developed by MIPS Technologies, Inc. – Philips has added its own multiply-add and branch-likely instructions. – A single-cycle multiply/accumulate module to allow integrated DSP functions, such as a software modem for high-performance standard data and fax protocols – Instruction cache: 4K bytes; data cache: 1K bytes – On-chip Translation Lookaside Buffer (TLB) with 3264-bit wide entries, each of which maps 4KByte page Max 75MHz operation
Low power diss...
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