Philips Semiconductors

Product Specification Rev. 3.1

February 2005

Functional Specification

Standard Label IC SL2 ICS20

14

3.4.3 CUSTOM COMMANDS

The manufacturer code of Philips is defined in ISO/IEC 7816-6A1. It has the value “04” hex.

For the structure of custom commands please refer to ISO/IEC 15693-3.

3.4.3.1 Inventory read

Command Code = A0 hex

When receiving the inventory read request, the I

•CODE SLI IC performs the same as in the anti-collision

sequence, with the difference that instead of the UID and the DSFID the requested memory content is re-

transmitted from the I

•CODE SLI IC.

If an error is detected the I

•CODE SLI IC remains silent.

If the option flag is set to 0 n blocks of data are re-transmitted. If the option flag is set to 1 n blocks of data

and the part of the UID which is not part of the mask are re-transmitted.

The request contains:

•

Flags

•

Inventory read command code

•

IC Manufacturer code

•

AFI (if the AFI flag is set)

•

Mask length

•

Mask value (if mask length >0)

•

First block number to be read

•

Number of blocks to be read

•

CRC 16

SOF

Flags

Inventory

Read

IC

Mfg.

code

Optional

AFI

Mask

Length

Mask

Value

First

block

number

Number

of blocks

CRC16

EOF

8 bits

8 bits

8 bits

8 bits

8 bits

0 – 64

bits

8 bits

8 bits

16 bits

The Inventory_flag must be set to 1.

The meaning of flags 5 to 8 is according to table 5 in ISO/IEC 15693-3.

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

•CODE SLI IC returns in

its response.