User manual

SCM3712 REFERENCE MANUAL 39

8.1.3. T=CL user Command

8.1.3.1. Description

This command can be used to send raw data to the user token.SCM3712 will add T=CL protocol data

to the raw data you send.

8.1.3.2. Format

CLA

INS

Data

0xFF

0xFE

0x00

Lraw_data

Raw_data

8.1.3.3. Response

Data Out

PICC response data+ SW1 + SW2

8.1.3.4. Status Words

SW1

SW2

Description

User should refer to the status words defined by the PICC manufacturer for a description of the status

words

8.1.3.5. Example

Let’s consider the Select command defined in ISO7816-4. This command being ISO can be sent to

the user token in 2 different way:

• Using the T=CL command

• Using the T=CL user command

Here are the 2 answers for the select command:

Nevertheless, the T=CL command is more useful for sending commands which are not defined in

ISO7816.