Texas Instruments TRF7962A, Руководство пользователя

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TRF7962A
SLOS757G – DECEMBER 2011 – REVISED MARCH 2020 www.ti.com
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Detailed Description
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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 6-24 ). 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.
Figure 6-24. IRQ With One Byte in FIFO
TI recommends resetting the FIFO after receiving data. Additionally, the RSSI value of the tag can be read
out at this time. In the example in
Figure 6-25 , the transponder is very close to the antenna, so a value of
0x7E is recovered.
Figure 6-25. Reset FIFO and Read RSSI