HTMS8x01 datasheet(31/57 Pages) NXP

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HTMS1x01_8x01

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Product data sheet

COMPANY PUBLIC

Rev. 3.3 — 17 October 2014

152933

31 of 57

NXP Semiconductors

HTMS1x01; HTMS8x01

HITAG µ 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 14.13) 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 except the Switch command is embedded in SOF and EOF pattern. As

described in Table 14 and Table 15 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 14.

Reader - Transponder IC transmission [1][2]

SOF

Flags

Commands

Parameters

Data

CRC-16

EOF

var.

(16)

LSB ... MSB

Table 15.

Transponder IC - Reader transmission [1][2]

SOF

Error flag

Data/Error code

CRC-16

EOF

var.

(16)

LSB ... MSB

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