MB89R118_06 datasheet(7/48 Pages) FUJITSU

Part #	MB89R118

Description	ISO/IEC 15693 Compliant FRAM Embedded High-speed RFID LSI FerVID familyTM

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Manufacturer	FUJITSU [Fujitsu Component Limited.]

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MB89R118

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4.

Cyclic Redundancy Check (CRC)

When a frame is received, reception of correct data--that is, the characters making up the frame is assumed

only when the value of the cyclic redundancy check (CRC) code is valid. For error-checking purposes, a 2-byte

CRC code value is inserted between data and the EOF signal.

The value of CRC code is required from all the data contained between the SOF and CRC field in each frame.

Method of calculation is provided in ISO/IEC 13239. The details are provided in ISO/IEC 15693-3 and ISO/IEC

18000-3 (Mode 1) . The initial value of the CRC code provided in ISO/IEC 15693-3 is “FFFFH”.

The CRC code is transferred, beginning with the lowest-order bit in the lowest-order byte.

5.

Electronic Article Surveillance (EAS) status

EAS status is 1 bit data (LSB side) , which is stored in the system area of FRAM. The initial value is “1”. EAS

bit “1” means goods-monitoring status, and EAS bit “0” means that goods-monitoring status is cleared. EAS

status can be written by Write EAS command and can be checked “FBH” block (refer to “■ MEMORY MAP”) by

Read commands such as Read Single Block command.

Together with Gate type reader/writer, EAS command can support anti-theft security functions.

MSBit

LSBit

MSByte

LSByte

LSBit

CRC 16 (8 Bits)

First transmitted bit of the CRC

• CRC bit/byte transition order

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