[57] NFCT: NFC Modulation amplitude

This anomaly applies to IC Rev. Engineering A, build codes QFAA-AA0, QFAA-AC0.

Symptoms

The NFC poller is missing some frames from the NFCT device.

Conditions

Always

Consequences

The NFC poller might miss some frames from the NFCT device.

Workaround

Apply the following register setting during the device startup just after reset. *(volatile uint32_t *)0x40005610 = 0x00000005; *(volatile uint32_t *)0x40005688 = 0x00000001; *(volatile uint32_t *)0x40005618 = 0x00000000; *(volatile uint32_t *)0x40005614 = 0x0000003F; This code is already present in the latest system_nrf52.c file.


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