SL2S3003 datasheet(62/82 Pages) NXP

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NXP Semiconductors

SL2S3003/SL2S3003TT

ICODE 3 (TagTamper)

8.5.3.20 READ SIGNATURE

Command code = BDh

The READ SIGNATURE command returns an IC specific 32-byte or 48-byte ECC signature, to verify NXP

Semiconductors as the silicon vendor. The signature length is defined with the OS_CFG_MODE bit (Table 40).

The originality signature can also be read with a READ CONFIG command to

• blocks 0-7 if the 32 byte signature length is enabled or

• block 0-11 if the 48 byte signature length is enabled.

SOF

Flags

READ SIG

NATURE

IC Mfg code

UID

CRC16

EOF

8 bits

64 bits optional 16 bits

Table 115. READ SIGNATURE request format

SOF

Flags

Error code

CRC16

EOF

8 bits

16 bits

Table 116. READ SIGNATURE response format when Error_flag set

SOF

Flags

Originality Signature

CRC16

EOF

8 bits

256 or 384 bits

16 bits

Table 117. READ SIGNATURE response format when Error_flag NOT set

Details on how to check the signature value will be provided in the application note ICODE 3 Originality

Signature Validation. Thew document will describe how to verify the originality of ICODE 3.

SL2S3003/SL2S3003TT

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3.0 — 28 March 2024

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