Nordic Semiconductor nRF5340 - Page 20

Hardware description
PCA10121
revision
Limitation Description Workaround Fixed in
revision
Rev 1.0.0 CS47L63 AD-DA
converter (U2)
may fail to start
On some occasions, the
1.2 V power supply for U2
is not provided at boot-up.
This is caused by higher
than expected inrush
current. This function is
tested in production.
Restart the DK or attach
the battery to the DK
before connecting the
USB cable. If the problem
persists, contact Nordic
Semiconductor and ask for
a replacement.
Rev 1.0.1
Table 6: Hardware limitations for the nRF5340 Audio DK
4406_708
20