SL2ICS53 datasheet(19/33 Pages) NXP

19 / 33 page

113730

Product data sheet

Rev. 3.0 — 14 March 2007

19 of 33

NXP Semiconductors

SL2 ICS53/SL2 ICS54

I•CODE SLI-S/I•CODE SLI-S HC

PUBLIC

8.1.3.11 Inventory page read

Command Code = B0h

When receiving the Inventory Page Read request, the I•CODE SLI-S/I•CODE SLI-S HC

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-S/I•CODE SLI-S HC IC.

If an error is detected the I•CODE SLI-S/I•CODE SLI-S HC IC remains silent.

If the Option flag is set to 0 n pages of data including page protection status (password

protection condition) are re-transmitted. If the option flag is set to 1 n pages (4 blocks =

16 byte) of data including page protection status (password protection condition) and the

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

The request contains:

• Flags

• Inventory Page Read command code

• IC Manufacturer code

• AFI (if the AFI flag is set)

• Mask length

• Mask value (if mask length > 0)

• First page number to be read

• Number of pages to be read

• CRC 16

Table 40.

Request format

SOF

Flags

Inventory

Read

IC Mfg

code

Optional

AFI

Mask

Length

Mask

Value

First Page

Number

Number of

Pages

CRC16

EOF

8 bits

0 to 64 bits 8 bits

8 bits

16 bits

8 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 pages in the request is one less than the number of pages that the

I•CODE SLI-S/I•CODE SLI-S HC IC returns in its response.

If the Option flag in the request is set to 0 the response contains:

Table 41.

Response format

SOF

Flags

Data

CRC16

EOF

8 bits

Page status & data

16 bits

Repeated as needed

The I•CODE SLI-S/I•CODE SLI-S HC IC reads the requested block(s) including page

protection status and sends back their value in the response. The mechanism and timing

of the Inventory Page Read command performs the same as at the Inventory command

which is described in Clause 8 of ISO/IEC 15693-3.

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