TRF7962A Datasheet, PDF (36/63 Pages) Texas Instruments – FULLY INTEGRATED 13.56-MHz RFID READER/WRITER IC FOR ISO15693/ISO18000-3 STANDARDS

TRF7962A
SLOS757 – DECEMBER 2011
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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 Figure 5-24). IRQ register read shows RX is complete and FIFO
register status shows one byte available, as expected and it is the E0, indicating ISO15693 transponder.
Figure 5-24. IRQ With One Byte in FIFO
At this time, the application should reset the FIFO and read out the RSSI value of the tag (see
Figure 5-25). In this case, the transponder is very close to the antenna, so value of 0x7E is recovered.
Figure 5-25. Reset FIFO and Read RSSI
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Detailed System Description
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