HTMS1301FUGSLASHAM datasheet(25/44 Pages) NXP

25 / 44 page

184430

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Product data sheet

PUBLIC

Rev. 3.0 — 18 March 2010

184430

25 of 44

NXP Semiconductors

HITAG µ

ISO 18000 transponder IC

14.6 READ MULTIPLE BLOCK

Upon reception of this command without error, the transponder reads the requested

block(s) and sends back their value in the response. The blocks are numbered from 0 to

255.

The number of blocks in the request is one less than the number of blocks that the

transponder returns in its response i.e. a value of '6' in the ’Number of blocks’ field

requests to read 7 blocks. A value '0' requests to read a single block.

Error Flag set to ’0’ indicates no error.

Table 19.

READ MULTIPLE BLOCKS - request format (12h)

Flags

Command Data 1

Data 2

Data 3

CRC-16

Description

(48)

(16)

No. of bits

00(1)00

010010

First block

number

Number of

blocks

without UII

in READY

state

10(1)00

010010

UII

First block

number

Number of

blocks

with UII

01(1)00

010010

First block

number

Number of

blocks

without UII

SELECTED

state

Table 20.

Response to a successful READ MULTIPLE BLOCKS request

Error Flag

Data

CRC-16

Description

32 x Number of blocks

(16)

No. of bits

User memory block data

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