Microchip Technology Curiosity PIC32MZ EF 2.0, User Manual

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1.6 X32 Audio Interface
The X32 is a 32-pin interface to the board to support audio codec, DACs, and Bluetooth radios. This interface has
audio supply I
2
S and other control lines, and data interfaces.
1.6.1 Block Diagram
The Curiosity PIC32MZ EF 2.0 Development Board has two X32 interfaces that share two I
2
S signals. The following
figure shows the relation between the I
2
S signals and the X32 daughter board interface.
Figure 1-8. X32 Interface Block Diagram
X32 #1
X32 #2
Main
Main
Aux
Aux
PIC32 MZ EF
I2S #1
I2S #2
1.6.2 Pinout
The following table shows the pinout and description for the X32 Audio interface. Refer to the Schematics for
additional information.
Table 1-2. X32 Audio Interface Pinout
Pin Number Name Description Interface
1 GND Ground Power
2 GND Ground Power
3 UART RX UART RX, receive to MCU from DB UART
4 UART CTS UART Clear to send UART
5 UART TX UART TX, transmit from MCU to DB UART
Development Board Functionality and Features
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2019 Microchip Technology Inc.
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