MB89R119B datasheet(27/46 Pages) RAMXEED

27 / 46 page

MB89R119B

DS411-00002-4v0-E

2-3. Lock Block command

On receiving the Lock Block command, the transponder locks (write disable) permanently the requested

block.

The transponder performs verification after writing and returns an error code if the writing has failed.

If the Option_flag (bit 7) is “0”, the transponder shall return its response when it has completed the lock

operation starting after “t1nom (320.9 s) + a multiple of 4096/fc (302.1 s)” with total tolerance of  32/fc

(2.4 s) and latest within 20 ms. If it is “1”, transponder shall wait for the reception of an EOF from the reader/

writer and upon such reception still return its response. (However, if an EOF is not sent within 38 ms, the

time-out occurs and the transponder can receive another command.)

Once the Lock Block command has been received, data in the locked block cannot be changed by the Write

commands.



Request (from the reader/writer to the transponder)



Response (from the transponder to the reader/writer)

(1) When Error_flag set

(2) When Error_flag not set

2-4. Read Multiple Blocks Command

On receiving the Read Multiple Blocks command, the transponder reads the requested block(s) and returns

their value in the response.

Up to 64 blocks of data can be read for one request.

If the Option_flag (bit 7) is “1”, the transponder adds block security status information in the response. If the

Option_flag (bit 7) is “0”, the transponder returns only the data in the specified blocks to the reader/writer.

The value of the "number of blocks" field specified in the request is the expected number of blocks minus 1.

Setting the number of blocks to “06H” makes a request to read 7 blocks. Setting the number of blocks to

“00H” makes a request to read 1 block (the request having the same effect as the Read Single Block

command).

The maximum number of blocks to be set is “3FH”.



Request (from the reader/writer to the transponder)

SOF

Flags

Command

(Lock Block)

UID

(Addressed mode)

Block

number

CRC

EOF

8 bits

8 bits (“22H”)

64 bits

8 bits

16 bits

SOF

Flags

Error code

CRC

EOF

8 bits (“01H”)

8 bits

16 bits

SOF

Flags

CRC

EOF

8 bits (“00H”)

16 bits

SOF

Flags

Command

(Read Multiple

Blocks)

UID

(Addressed mode)

First block

number

Number of

blocks

CRC

EOF

8 bits

8 bits (“23H”)

64 bits

8 bits

16 bits

MB89R119B Datasheet(PDF) 27 Page - RAMXEED LIMITED

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