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SW2 (to headphones)
SW3 (pressed)
EXTERNAL CONNECTORS DESCRIPTION:
PWR_JACK:
Pin #
1
2
UEXT:
Important note: If you apply power to a host device and then connect the host to the UEXT of MOD-
MP3-X it might restart your host. The workaround is to connect the host to the UEXT of MOD-MP3-X
and then apply power to the host!
Pin #
1
2
3
4
5
6
7
8
9
10
Previous Song
Pause/Play
Signal Name
Power Input
GND
Signal Name
+3.3V_UEXT
GND
DREQ/RXD
MP3_RST/TXD
XCS
SW-CS1
SPI1_MISO
SPI1_MOSI
SPI1_SCK
DCS
Volume down
Page 15
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