Datenblatt-Suchmaschine für elektronische Bauteile |
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AM1707CZKBT3 Datenblatt(PDF) 8 Page - Texas Instruments |
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AM1707CZKBT3 Datenblatt(HTML) 8 Page - Texas Instruments |
8 / 200 page AM1707 SPRS637E – FEBRUARY 2010 – REVISED JUNE 2014 www.ti.com The ARM Subsystem includes the following features: • ARM926EJ-S RISC processor • ARMv5TEJ (32/16-bit) instruction set • Little endian • System Control Co-Processor 15 (CP15) • MMU • 16KB Instruction cache • 16KB Data cache • Write Buffer • Embedded Trace Module and Embedded Trace Buffer (ETM/ETB) • ARM Interrupt controller 3.3.1 ARM926EJ-S RISC CPU The ARM Subsystem integrates the ARM926EJ-S processor. The ARM926EJ-S processor is a member of ARM9 family of general-purpose microprocessors. This processor is targeted at multi-tasking applications where full memory management, high performance, low die size, and low power are all important. The ARM926EJ-S processor supports the 32-bit ARM and 16 bit THUMB instruction sets, enabling the user to trade off between high performance and high code density. Specifically, the ARM926EJ-S processor supports the ARMv5TEJ instruction set, which includes features for efficient execution of Java byte codes, providing Java performance similar to Just in Time (JIT) Java interpreter, but without associated code overhead. The ARM926EJ-S processor supports the ARM debug architecture and includes logic to assist in both hardware and software debug. The ARM926EJ-S processor has a Harvard architecture and provides a complete high performance subsystem, including: • ARM926EJ -S integer core • CP15 system control coprocessor • Memory Management Unit (MMU) • Separate instruction and data caches • Write buffer • Separate instruction and data (internal RAM) interfaces • Separate instruction and data AHB bus interfaces • Embedded Trace Module and Embedded Trace Buffer (ETM/ETB) For more complete details on the ARM9, refer to the ARM926EJ-S Technical Reference Manual, available at http://www.arm.com 3.3.2 CP15 The ARM926EJ-S system control coprocessor (CP15) is used to configure and control instruction and data caches, Memory Management Unit (MMU), and other ARM subsystem functions. The CP15 registers are programmed using the MRC and MCR ARM instructions, when the ARM in a privileged mode such as supervisor or system mode. 3.3.3 MMU A single set of two level page tables stored in main memory is used to control the address translation, permission checks and memory region attributes for both data and instruction accesses. The MMU uses a single unified Translation Lookaside Buffer (TLB) to cache the information held in the page tables. The MMU features are: • Standard ARM architecture v4 and v5 MMU mapping sizes, domains and access protection scheme. 8 Device Overview Copyright © 2010–2014, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: AM1707 |
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