NXP Semiconductors

SL3S1005

UCODE 9xm

Parity check:

A parity check on the TID is implemented to offer the possibility to identify a change in the TID. The parity bit

(Even parity) will be calculated and locked in the manufacturing process. For a check, the TID content needs to

be read out and parity checked.

9.6.7 Brand Identifier

9.6.7.1 Description

The feature allows brand owners to implement a product originality check option for their products. The

customer dedicated unique 16-bit brand identifier is programmed during manufacturing process by NXP and

therefore unalterable stored in the memory.

A SELECT command on bit 74h (Brand Identifier) in the configuration word triggers the UCODE 9xm to respond

in the inventory round with PC + EPC + Brand Identifier + CRC.

In order to prevent manipulation, the Brand Identifier is scrambled with the RN16 and not sent in plain. The

implemented scrambling is performed by bitwise XOR operation of the 16-bit Brand Identifier and the RN16. At

the reader, the Brand identifier can be descrambled and the originality check completed.

The PC value is adjusted accordingly for UCODE 9xm. A SELECT on the Brand Identifier bit always gives a Tag

matching. The usage of this feature requires an update on the reader firmware with the Brand Identifier check

routine.

Default value of the UCODE 9xm Brand Identifier is "AAAAh".

Customer-specific Brand Identifiers can be requested by a dedicated product ordering code. For details, contact

your NXP sales representative.

9.6.8 Pre-serialization of the 96-bit EPC

9.6.8.1 Description

UCODE 9xm is delivered with a pre-serialized content of the 96-bit EPC, which is the initial programmed length

of the EPC.

The EPC content is identical to the TID content except for the 16-bit XTID content which is set to 16-bit 0's.

aaa-027142

Bits

7

0 11

Class Identifier

Mask-Designer Identifier

Model Number

XTID

11

15

0

47

0

0

0

Serial Number

TID

Bits

7

0 11

Class Identifier

Mask-Designer Identifier

Model Number

0000 0000 0000 0000

11

15

0

47

0

0

0

Serial Number

serialized EPC

Figure 5. Pre-serialization of 96-bit EPC

SL3S1005

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Product data sheet

Rev. 3.1 — 12 February 2025

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