mfrc531 NXP Semiconductors, mfrc531 Datasheet - Page 105

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mfrc531

Manufacturer Part Number
mfrc531
Description
Iso/iec 14443 Reader Ic
Manufacturer
NXP Semiconductors
Datasheet

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NXP Semiconductors
MFRC531_34
Product data sheet
PUBLIC
Signals VEvalR and VEvalL show the evaluation of the signal’s right and left half-bit.
Finally, the digital test signal s_data shows the received data. This is then sent to the
internal digital circuit and s_valid which indicates the received data stream is valid.
Fig 27. ISO/IEC 14443 A receiving path Q-clock
RX reference
VRxAmpQ
VCorrDQ
VCorrNQ
VEvalR
VEvalL
s_data
s_valid
Rev. 3.4 — 26 January 2010
056634
50 μs per division
ISO/IEC 14443 reader IC
MFRC531
© NXP B.V. 2010. All rights reserved.
001aak628
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