MB89R119B datasheet(28/46 Pages) RAMXEED

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MB89R119B

DS411-00002-4v0-E



Response (from the transponder to the reader/writer)

(1) When Error_flag set

(2) When Error_flag not set

2-5. Write Multiple Blocks Command

On receiving the Write Multiple Blocks command, the transponder writes the requested block(s) with the

data contained in the request and reports the success of the operation in the response.

Up to 2 blocks of data can be written for one request.

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

number of blocks specified in the Write Multiple Blocks command is similar to the number of blocks specified

in the Read Multiple Blocks command. The value of the number of blocks field specified in the Write Multiple

Blocks command is obtained by subtracting 1 from the number of the expected blocks to be written.

Setting the number of blocks to “01H” makes a request to write 2 blocks. Setting the number of blocks to

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

command).

If at least one of the blocks specified by the command is locked, the transponder does not write any data

and, instead, returns an error code.

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

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.)



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

SOF

Flags

Error code

CRC

EOF

8 bits (“01H”)

8 bits

16 bits

SOF

Flag

Block security status

(option)

Data

CRC

EOF

8 bits (“00H”)

8 bits

64 bits

16 bits

Repeated as required

SOF Flags Command (Write

Multiple Blocks)

UID

(Addressed mode)

First

block

number

Number

blocks

Data

CRC EOF

8 bits

8 bits (“24H”)

64 bits

8 bits

32 or 64 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

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