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AM3874BCYE80 データシート(PDF) 9 Page - Texas Instruments |
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AM3874BCYE80 データシート(HTML) 9 Page - Texas Instruments |
9 / 358 page Arbiter 128 ICECrusher Trace Debug 48KB ROM 64KB RAM ARM Cortex-A8 Interrupt Controller (AINTC) L3 DMM 128 64 64 128 128 128 PLL_ARM 128 System Events 32 32 128 ARM Cortex-A8 NEON ETM 512KB L2$ 32KB L1I$ 32KB L1D$ DEVOSC AM3874, AM3871 www.ti.com SPRS695D – SEPTEMBER 2011 – REVISED JANUARY 2016 3.3 Device Compatibility 3.4 ARM Cortex-A8 Microprocessor Unit (MPU) Subsystem Overview The ARM Cortex-A8 Subsystem is designed to give the ARM Cortex-A8 Master control of the device. In general, the ARM Cortex-A8 is responsible for configuration and control of the various subsystems, peripherals, and external memories. The ARM Cortex-A8 Subsystem includes the following features: • ARM Cortex-A8 RISC processor: – ARMv7 ISA plus Thumb2™, JazelleX™, and Media Extensions – Neon™ Floating-Point Unit – Enhanced Memory Management Unit (MMU) – Little Endian – 32KB L1 Instruction Cache – 32KB L1 Data Cache – 512KB L2 Cache • CoreSight Embedded Trace Module (ETM) • ARM Cortex-A8 Interrupt Controller (AINTC) • Embedded PLL Controller (PLL_ARM) • 64KB Internal RAM • 48KB Internal Public ROM Figure 3-1 shows the ARM Cortex-A8 Subsystem for the device. Figure 3-1. ARM Cortex-A8 Subsystem For more details on the ARM Cortex-A8 Subsystem, see the System MMU section of the Chip Level Resources chapter of the AM387x Sitara™ ARM Processors Technical Reference Manual (Literature Number: SPRUGZ7). 3.4.1 ARM Cortex-A8 RISC Processor The ARM Cortex-A8 Subsystem integrates the ARM Cortex-A8 processor. The ARM Cortex-A8 processor is a member of ARM Cortex family of general-purpose microprocessors. This processor is targeted at multitasking applications where full memory management, high performance, low die size, and low power are all important. The ARM Cortex-A8 processor supports the ARM debug architecture and includes logic to assist in both hardware and software debug. The ARM Cortex-A8 processor has a Harvard architecture and provides a complete high-performance subsystem, including: • ARM Cortex-A8 Integer Core • Superscalar ARMv7 Instruction Set • Thumb-2 Instruction Set Copyright © 2011–2016, Texas Instruments Incorporated Device Overview 9 Submit Documentation Feedback Product Folder Links: AM3874 AM3871 |
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