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[v1-05] 2019-Feb-15

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AS3953A − Detailed Description

Cascade Level 2: According to ISO 14443-3 all bits except b6

and b3 are “don’t care” for Cascade Level 2.

If configuration bit16 [nl4] is set to logic ‘0’ (default state), the

SAK on Cascade Level 2 reports that tag is compliant to level4

(see figure below).

Figure 17:

Cascade Level 2 Coding (ISO/IEC14443-4 Compliant)

If configuration bit16 [nl4] is set to logic ‘1’, the SAK on Cascade

Level 2 reports that tag is NOT compliant to Level-4 (see figure

below).

Figure 18:

Cascade Level 2 Coding (NOT ISO/IEC14443-4 Compliant)

If configuration bit15 [nfc] is set to logic ‘1’, the SAK on Cascade

Level 2 reports that tag is NFC passive target (see figure below).

Figure 19:

MSB

LSB

Description

01000

UID complete, tag is

compliant to

ISO/IEC14443-4

MSB

LSB

Description

00000

UID complete, tag is NOT

compliant to

ISO/IEC14443-4

MSB

LSB

Description

100

000

UID complete, tag is

compliant to NFCIP-1

transport protocol

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