i960® RM/RN I/O Processor Overview

4.1CPU Memory Map

The memory map for the IQ80960RM/RN platform is shown in Figure 4-2. All addresses below 9002 0000H on the IQ80960RM/RN platform are reserved for various functions of the i960 RM/RN I/O processor, as shown on the memory map. Documentation for these areas, as well as the processor memory mapped registers at FF00 0000H and the IBR, can be found in the i960® RM/RN I/O Processor Developer’s Manual .

Figure 4-2. IQ80960RM/RN Platform Memory Map

F000 0000H

E000 0000H

B000 0000H

A000 0000H

9002 0000H

8000 0000H

0000 2000H

0000 1900H

0000 0800H

0000 0400H

0000 0000H

Flash ROM

and

Processor Registers

On-board Devices

Reserved

DRAM

Reserved

ATU Outbound

Translation Windows

ATU Outbound

Direct Addressing Window

Reserved

Peripheral

Memory Mapped Registers

Reserved

Processor Internal Data RAM

Processor

Memory Mapped

Registers

Flash ROM

Reserved

LED Register (write only)

UART

FF00 0000H

FEE0 0000H

F000 0000H

E004 0000H

E000 0000H

4-2

IQ80960RM/RN Evaluation Board Manual

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Intel manual CPU Memory Map, IQ80960RM/RN Platform Memory Map

RN, IQ80960RM specifications

The Intel IQ80960RM and RN are part of the Intel i960 family of microprocessors, which were specifically designed for embedded applications in real-time computing environments. Introduced in the early 1990s, these processors were aimed at providing high-performance processing capabilities in industrial, telecommunications, and military systems.

One of the key features of the IQ80960RM and RN is their ability to support a 32-bit architecture, delivering a significant performance advantage over 16-bit and earlier processors. This architecture enables the execution of complex algorithms and the management of large amounts of data, making these microprocessors suitable for demanding applications.

The i960 family is built around a superscalar architecture, allowing multiple instructions to be completed in a single clock cycle. This is achieved through advanced instruction pipelining, which significantly boosts throughput and overall computational speed. The IQ80960RM and RN also included features like branch prediction and out-of-order execution, enhancing efficiency and reducing latency in real-time applications.

Memory management capabilities are another strong point of the IQ80960RM and RN. They support both virtual and physical memory addressing, enabling sophisticated memory management strategies. Their integrated memory management unit (MMU) allows for easier and more effective memory allocation, critical for real-time operating systems that require precise timing and resource management.

Furthermore, these processors are designed with an extensive instruction set architecture (ISA), which supports a wide range of operations, including digital signal processing (DSP) tasks. This versatility allows them to be utilized in various applications, from automotive systems to robotics, where reliable performance is paramount.

The thermal performance and power efficiency of the IQ80960RM and RN has also been a notable characteristic. With operational capabilities across various temperature ranges, these chips are well-suited for harsh environments often found in industrial settings.

In terms of connectivity, the IQ80960 series supports multiple I/O interfaces and communication protocols, ensuring that they can integrate seamlessly with other components and systems. This flexibility enhances their usability in networked applications, particularly in embedded systems.

Overall, the Intel IQ80960RM and RN processors represent a significant step forward in embedded processor technology, characterized by their robust performance, advanced features, and ability to meet the stringent demands of real-time applications across various industries.