NXP Semiconductors PN7462AU - PN7462 Family Adaptive Wave Control

NXP Semiconductors
UM10883
PN7462 family Quick Start Guide - Development Kit
UM10883
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User manual
COMPANY PUBLIC
Rev. 1.6 — 14 May 2018
319816
38 of 120
Fig 39. PN7462 family IC DPC
6.9 PN7462 family Adaptive Wave Control
The PN7462 family IC DPC functionality offers the option to use a lookup table to
dynamically control the TX shaping. This feature is called Adaptive Wave Control (AWC).
The NFC Cockpit provides a AWC functionality to allow an easy optimization of the
shaping functions (see Fig 40).
Requirement: a properly tuned antenna is connected and the DPC is calibrated.
Note: It is recommended to disable the AWC, before starting the AWC function in the
NFC Cockpit to avoid confusion: the AWC itself is done inside the PN7462 FW, and the
NFC cockpit tries to overrule that in the AWC tab. Disabling the AWC changes the
EEPROM.
Note: It is recommended to store the complete EEPROM content (backup!) using the
<Dump EEPROM> before disabling the AWC. This allows an easy recovery at any time,
even if the EEPROM is messed up.