HTMS1301FUGSLASHAM datasheet(20/44 Pages) NXP

20 / 44 page

184430

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Product data sheet

PUBLIC

Rev. 3.0 — 18 March 2010

184430

20 of 44

NXP Semiconductors

HITAG µ

ISO 18000 transponder IC

14. Command set

The first part of this section (Section 14.1) describes the flags used in every RWD

command. The following subsections (Section 14.3 until Section 14.11) explain all

implemented commands and their suitable transponder IC responses which are done with

tables showing the command itself and suitable responses.

Within tables flags, parameter bits and parts of a response written in braces are optional.

That means if the suitable flag is set resulting transponder IC's action will be performed

according to Section 14.1.

Every command is embedded in SOF and EOF pattern. As described in Table 8 and

Table 9 sending and receiving data is done with the least significant bit of every field on

first position.

Important information:

In this document the fields (i.e. command codes) are written with most significant

bit first.

[1]

Values in braces are optional.

[2]

Data is sent with least significant bit first.

[1]

Values in braces are optional.

[2]

Data is sent with least significant bit first.

Table 8.

Reader - Transponder IC transmission [1][2]

SOF

Flags

Commands

Parameters

Data

CRC-16

EOF

var.

(16)

LSB ... MSB

Table 9.

Transponder IC - Reader transmission [1][2]

SOF

Error flag

Data/Error code

CRC-16

EOF

var.

(16)

LSB ... MSB

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