NXP Semiconductors
UM191812
PN544 C2 User Manual
191812 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
User Manual Rev. 1.2 — 2010-06-16 27 of 172
Fig 19. Sample transfer PN544 to Host
7.4.6.3 Example: Full Duplex Transfer
PN544 i
s capable of receiving and transmitting frames at the same time. The host shall
be able to handle this situation as well. The frames shall be considered as completely
independent.
Fig 20. HSU Full Duplex Transfer
Note: At the beginning of a received frame, the IRQ is set to logic high, and data is sent
immediately. IRQ line is set to logic low at the end of the received frame.
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