NXP Semiconductors arm LPCXpresso55S36, Руководство пользователя

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NXP Semiconductors
LPCXpresso55S36UM
LPCXpresso55S36 Development Board User Manual
Communication between audio codec / audio expansion connector and the target MCU is
enabled using I2C bus (for control signals) and I2S bus (for data signals).
The audio codec, audio jacks, and audio expansion connector are described in the table
below.
Part identifier Manufacturing part number Description
U13 WM8904 Audio codec. It receives analog audio from J5 jack, encodes it
as digital signals, decodes digital signals back to analog audio,
and sends it to J6 jack.
J5 Audio input jack. It receives audio data from an external audio
source and sends it to audio codec.
J6
SJ-3524-SMT
Audio output (headphone output) jack. It sends out audio data
received from audio codec.
J44 TMM-112-01-G-D 2x12 pin header for connecting an external audio device
Table 15. Audio codec, audio jacks, and audio expansion connector
Two jumpers (JP19 and JP18) are provided for testing digital audio input/output to/from
audio codec. JP19 is used to enable/disable digital audio input to audio codec. JP18 is
used to enable/disable digital audio output from audio codec.
2.7 HS SPI interface
The target MCU has a high-speed SPI (HS SPI) controller, which is accessible through its
Flexcomm 8 module. The HS SPI controller can act as a SPI master or slave. It supports
up to four SPI slave select inputs/outputs (SS0-SS3). In the LPCXpresso55S36 board,
the HS SPI connections are supported through slave selects 0, 1, and 3.
The figure below shows the HS SPI diagram of the LPCXpresso55S36 board.
LPC5536
MCU-Link
SPI NOR flash
Voltage
translator
Motor 2 +
Arduino socket
connector J92
FC8
mikroBUS socket
connector J7
Target side
Slave
Debugger side
Master
Slave select 0 Master Slave
Slave select 3 Master Slave
Slave select 1
Master/
slave
Slave
Figure 9. HS SPI diagram
The table below describes the HS SPI connections on the LPCXpresso55S36 board.
LPCXpresso55S36UM All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 2 — 5 September 2022
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