CRX14_05 Datasheet, PDF (24/40 Pages) STMicroelectronics – Low Cost ISO14443 type-B Contactless Coupler Chip with Anti-Collision, CRC Management and Anti-Clone Function

CRX14
Answer Start Of Frame
The PICC SOF must be compliant with the
ISO14443 type-B, and is shown in Figure 25.
– Ten or eleven Elementary Time Units (ETU)
each containing a logical ‘0’,
– Two ETUs containing a logical ‘1’.
Figure 25. Answer Start Of Frame
b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12
ETU 0 0 0 0 0 0 0 0 0 0 1 1 1
Answer End Of Frame
The PICC EOF must be compliant with the
ISO14443 type-B, and is shown in Figure 26.
– Ten or eleven Elementary Time Units (ETU)
each containing a logical ‘0’,
– Two ETUs containing a logical ‘1’
Figure 26. Answer End Of Frame
b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 b10 b11 b12
ETU 0 0 0 0 0 0 0 0 0 0 1 1 1
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