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Board-to-Board
Connector
Audio Codec
(AIC3104)
BB_AIC_DIN
BB_AIC_DOUT
BB_AIC_MCLK
BB_AIC_BCLK
BB_AIC_WCLK
BB_I2C_SDA
BB_I2C_SCL
HP ROUT
HP LOUT
MIC IN
24.576
MHz
1.8 V
3.3 V
Copyright © 2016, Texas Instruments Incorporated
Bo
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rd
-t
o
-Bo
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rd
C
o
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ct
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Micro SD
Card Connect
CLK
CMD
D[0-4]
Card Detect
BB_SD_CLK
BB_SD_CMD
BB_SD_D(0-4)
BB_SDCD
3.3 V
Micro SD Card Interface
58
SPRUIC7 – December 2016
Copyright © 2016, Texas Instruments Incorporated
CSK Carrier Card Interface
7.8
Micro SD Card Interface
The micro SD card connector is connected to the SD interface of the board-to-board connector, shown in
The card-detect pin from the SD card connector is connected to the GPIO to ensure the presence of the
SD card.
Figure 7-8. Micro SD Card Interface
Refer to
for SD card connection details, and to
to configure the GPIO for SD card
detect.
7.9
Audio Codec Interface
The TLV320AIC3104 device is a flexible, low power, low-voltage stereo audio codec with programmable
inputs and outputs, PowerTune™ codec capabilities, fixed predefined and parameterizable signal
processing blocks, integrated PLL, and flexible digital interfaces.
This audio codec is interfaced to the I2S2 port and I
2
C of the TMS320DMx processor modules. The codec
supports McASP and McBSP configurations. A 24.576-MHz optional oscillator is provided for master clock
generation. The audio line in and line out is provided through 3.5-mm audio jacks.
shows the audio codec interface.
Figure 7-9. Audio Codec Interface