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NXP Semiconductors
UM11192
User Manual for LPCXpresso54S018M Development Board
UM11192
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2019. All rights reserved.
User manual
Rev. 1.0
— 13th February 2019
27 of 34
Fig 7.
Line input circuitry
A second 3.5 mm stereo jack socket (J6) provides a headphone / line out from the codec,
via the circuit shown in
Fig 8
.
Fig 8.
Headphone / line output circuitry
The MCUXpresso SDK includes drivers and example code for the audio codec.
10.3 SD card
The full size SD card (J7) includes in the LPCXpresso54S018M board provides a 4-bit
SDIO interface to support memory cards, plug-in WiFi modules, etc. Power enable to the
socket is provided via PIO2-5, with LED D7 providing a visual indication when power is
applied.
The MCUXpresso SDK includes drivers and examples of using this interface with SD
memory cards.