LinkIt 2523 HDK v11 User's Guide
© 2015 - 2016 MediaTek Inc.
Page 25 of 82
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Set the jumper J6104
with 0Ω resistor
to connect the LCM PTE signal to serial
pin header, as shown below.
LCM display data
Set the jumper J6105
with 0Ω resistor
to connect the LCM SDA signal to
onboard LCM, as shown below.
Set the jumper J6105
with 0Ω resistor
to connect the LCM SDA signal to serial
pin header, as shown below.
LCM display address
Set the jumper J6106
with 0Ω resistor
to connect the LCM SA0 signal to
onboard LCM, as shown below.
Set the jumper J6106
with 0Ω resistor
to connect the LCM SA0 signal to serial
pin header, as shown below.
4.8.
Audio
The LinkIt 2523 HDK is equipped with a loud speaker to enable audio playback. To enable the speaker, configure
the GPIO45 as an output using the Easy PinMux Tool. The LinkIt 2523 HDK also supports full duplex to develop
audio receive and speak at the same time for real-time development. The HDK is using the I2S interface with
master and slave with a sampling rate of 48Hz and bit width of up to 16 bits for stereo.
4.9.
Speech
There is one analog microphone on the LinkIt 2523 HDK for audio recording. The audio jack also supports the
OMTP standard for recording. The locations of the microphone and audio jack are shown in Figure 8.
4.10.
MSDC
The LinkIt 2523 HDK supports any micro SD card of FAT32 format to read and write data. The micro-SD card plug-
in is detected at GPIO10 with various voltage levels. To power on the eMMC, the power rail should be connected
to the power rail VMC, which means DVDD33_VMC should be connected to VMC using R1113.
The eMMC feature is shared with micro SD card by configuring the pin jumper settings, see Table 14 and Figure 16.
Table 14. Jumper settings (illustrated) for storage options
Storage data line 0
Set the jumper J1001 pins to assign the storage data line 0 to micro SD, as shown
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
