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SLOS732G – JUNE 2011 – REVISED MARCH 2020
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Detailed Description
Copyright © 2011–2020, Texas Instruments Incorporated
Figure 6-22. IRQ Status Register Read Followed by FIFO Status Register Read
This is followed by a continuous read of the FIFO (see
). The first byte is 0x00 for no error.
The next byte is the DSFID (usually shipped by manufacturer as 0x00), then the UID, shown here up to
the next most significant byte (MSByte), the MFG code (0x07 to indicate TI silicon).
Figure 6-23. Continuous Read of FIFO
This is followed by another IRQ approximately 160 µs later, as there is still one byte in FIFO, the MSB of
the UID, which must be retrieved (see
). IRQ register read shows RX is complete and FIFO
register status shows one byte available, as expected and it is the E0, indicating ISO/IEC 15693
transponder.
