MB89R112 datasheet(33/49 Pages) RAMXEED

33 / 49 page

MB89R112

DS411-00004-3v0-E

3. Description of Custom Command

The IC manufacturing code is required to use a Custom command. The IC manufacturing code for the

MB89R112 is “08H”.

3-1. Fast Inventory Command

The Fast Inventory command is the same as the Inventory Command that executes the anti-collision se-

quence.

The data rate in the response is twice as defined in ISO/IEC 15693.

If error is detected during execution of this command, a response indicating the error shall not be returned.

The Inventory_flag (bit 3) must be set to “1”.

When the AFI_flag (bit 5) in the Inventory command frame is set as “1”, the response shall be returned in

the following cases.

• The AFI value of the transponder is in accord with the optional AFI value.

• The 4 bits value MSB of the Optional AFI is “0H”, and the 4 bits value LSB of the Optional AFI is in

accord with the 4 bits value LSB of the transponder.

• The 4 bits value LSB of the Optional AFI is “0H”, and the 4 bits value MSB of the Optional AFI is in

accord with the 4 bits value MSB of the transponder.

• The optional AFI value is “00H”.



Request

[Request from the reader/writer to the transponder]



Response

[Response from the transponder to the reader/writer]

SOF Flag

Command

(Fast Inventory)

IC manufacturer

code (necessary)

Optional

AFI

Mask

length

Mask

value

CRC

EOF

8 bits

8 bits (“B1H”)

8 bits (“08H”)

8 bits

0 to 64 bits 16 bits

SOF

Flag

DSFID

UID

CRC

EOF

8 bits (“00H”)

8 bits

64 bits

16 bits

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