10
J.A.G Aug 2006
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Tag Resonant Frequency Measurement
z
1.6 ms after TXCT goes high, an internal measuring cycle of 100 µs
will start to measure the low bit frequency of the 16 tag pre-bits.
100 µs
1.6 ms 1.7 ms
TXCT
SCIO
Start Bit
Frequency measuring
starts (Pre-bits)
Begins looking for start
byte (0x7E, 0x7F))
z
When TXCT goes high, the module enters the read phase
z
1.7 ms after TXCT goes high, the IC starts looking for a valid
start byte.
