CRX14_05 Datasheet, PDF (15/40 Pages) STMicroelectronics – Low Cost ISO14443 type-B Contactless Coupler Chip with Anti-Collision, CRC Management and Anti-Clone Function

Figure 9. I²C Polling Flowchart using ACK
Radio Frequency
data exchange
in progress
START Condition
DEVICE SELECT
CODE with R/W=1
First byte of instruction
with R/W = 1 already
decoded by the CRX14
ReSTART
NO
ACK
returned
YES
Next
NO
operation is
addressing
the CRX14
YES
Proceed to READ
Operation
STOP
STOP
CRX14
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