Datasheet > MAR31755AC

MAR31755AC

更新时间： 2024-01-02 17:57:57

品牌	Logo	应用领域
DYNEX		/
页数	文件大小	规格书
13页	133K
描述
Logic Circuit

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技术参数
数据手册

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MAR31755AC 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.68
Is Samacsys：	N	Base Number Matches：	1

MAR31755AC 数据手册

MA^M3^A1³7¹⁷5⁵5⁵

16-Bit Feedthrough Error Detection

& Correction Unit (EDAC)

Replaces June 1999 version, DS3572-3.0

DS3572-4.0 January 2000

The MA31755 is a 16 bit Error Detection and Correction

Unit intended for use in high integrity systems for monitoring

and correcting data values retrieved from memory. The EDAC

is placed in the data bus between the processor and the

memory to be protected. Extra check bits added at each

memory location are programmed transparently by the EDAC

during a processor write cycle. The entire checkword and data

combination is verified on read cycles. If any one bit in the

incoming data stream is at fault the EDAC can correct the fault

transparently, presenting the corrected 16-bit value to the

processor. An error in two bits can be detected but cannot be

corrected. Both the correctable and uncorrectable error

conditions are signalled to the system to allow the processor to

take action as required. Parity is passed through the device

unchanged as data bus bit 16.

Tri-statable bus transceivers with a high drive capability

are incorporated at the MD and CB busses which allows the

usual bus driver devices to be removed and reduces the

overall timing overhead imposed on the data bus. Although

designed primarily for MA31750 application, this part may be

used in almost any 16-bit processor system requiring high data

integrity.

MD[0:16]

CB[0:5]

VDD

VSS

MA31755

EDAC

XERRN

ENCOR

ENFLG

PD[0:16]

CERRN

NCERRN

CS0

CS1N

CS2N

RDWN

FEATURES

Figure 1: Chip Signals

■ Fast Feedthrough (35ns Detect and Correct Cycle)

■ 16-Bit Operation with 6 Check Bits

■ Radiation Hard CMOS/SOS Technology

■ Feedthrough Operation

■ Error Corrected/Uncorrected Flags

■ High Drive Capability on Memory Busses

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中文翻译

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