IDT79R3052-33DL

更新时间： 2024-02-20 00:16:32

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艾迪悌 - IDT		/
页数	文件大小	规格书
23页	182K
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数据手册

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IDT79R3052-33DL 数据手册

IDT79R3051/79R3052 INTEGRATED RISControllers

COMMERCIAL TEMPERATURE RANGE

VIRTUAL

PHYSICAL

0xffffffff

Kernel Mapped

(kseg2)

Any

0xc0000000

0xa0000000

0x80000000

Kernel Uncached

(kseg1)

Physical

Memory

3548MB

Kernel Cached

(kseg0)

User Mapped

Cacheable

(kuseg)

Any

Memory

512MB

0x00000000

2874 drw 03

Figure 3. Virtual-to-Physical Mapping of Extended Architecture Versions

The base versions of the architecture (the IDT79R3051

When using the base versions of the architecture, the

and IDT79R3052) remove the TLB and institute a fixed system designer can implement a distinction between the

address mapping for the various segments of the virtual user tasks and the kernel tasks, without having to execute

address space. The base processors support distinct kernel page management software. This distinction can take the

andusermodeoperationwithoutrequiringpagemanagement form of physical memory protection, accomplished by ad-

software, leading to a simpler software model. The memory dress decoding, or in other forms. In systems which do not

mapping used by these devices is illustrated in Figure 4. Note wish to implement memory protection, and wish to have the

that the reserved address spaces shown are for compatibility kernel and user tasks operate out of a single unified memory

with future family members; in the current family members, space, upper address lines can be ignored by the address

references to these addresses are translated in the same decoder, and thus all references will be seen in the lower

fashion as their respective segments, with no traps or excep- gigabyte of the physical address space.

tions taken.

VIRTUAL

PHYSICAL

0xffffffff

1MB Kernel Rsvd

Kernel Cacheable

Tasks

1024MB

2048MB

Kernel Cached

(kseg2)

0xc0000000

0xa0000000

0x80000000

Kernel Uncached

(kseg1)

Kernel/User

Cacheable

Tasks

Kernel Cached

(kseg0)

1MB User Rsvd

User

Cached

(kuseg)

Inaccessible

512MB

Kernel Boot

and I/O

0x00000000

2874 drw 04

Figure 4. Virtual-to-Physical Mapping of Base Architecture Versions

5.3

1 234 5 6 7...23

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与IDT79R3052-33DL相关器件

型号	品牌	获取价格	描述	数据表
IDT79R3052-33DL8	IDT	获取价格	RISC Microprocessor, 32-Bit, 33.33MHz, PQCC84, 0.050 INCH PITCH, HEAT SINK, PLASTIC, LCC-8
IDT79R3052-33G	ETC	获取价格	32-Bit Microprocessor
IDT79R3052-33J	IDT	获取价格	RISControllers
IDT79R3052-33MJ	IDT	获取价格	RISControllers
IDT79R3052-33MJ8	IDT	获取价格	RISC Microprocessor, 32-Bit, 33.33MHz, CMOS, PQCC84, MQUAD-84
IDT79R3052-33PH	ETC	获取价格	32-Bit Microprocessor
IDT79R3052-33QJ	IDT	获取价格	RISC Microprocessor, 32-Bit, 33.33MHz, CMOS, CQCC84
IDT79R3052-33QJM	IDT	获取价格	Microprocessor, 32-Bit, 33.33MHz, CMOS, CQCC84
IDT79R3052-40	IDT	获取价格	RISControllers
IDT79R3052-40G	ETC	获取价格	32-Bit Microprocessor