Data Sheet

Thundercomm TurboX C40x SOM Datasheet
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2.3.3. SPDIF interface
The SOM has a digital audio dedicated interface SPDIF. It’s an input port only, and receiving audio signals in
SPDIF format.
Table 2-5. SPDIF interface definition
Pin Name PIN Location Voltage Type Description Notes
SPDIF_RX_COAX_RCA 19 - DI SPDIF receive port for electrical input
SPDIF_RX_COAX_EP 20 - DI SPDIF receive port for optical input QCS403 not support
2.3.4. Audio interface
The SOM provides the audio system digital processing functions.
The SOM provide SLIMBUS, I2S, SWR and DMIC interfaces for audio system. The multiplexing of these
interfaces is as follows.
Figure 2-2. Audio Interface
One port Serial low-power inter chip media bus (SLIMBUS) interface is dedicate for external codec IC, which
can build system’s audio functions.
Table 2-6. SLIMBUS interface definition
Pin Name PIN Location Voltage Type Description Notes
LPI_GPIO_2 33 1.8V DO Audio SLIMBUS clock
LPI_GPIO_3 34 1.8V IO Audio SLIMBUS data0
LPI_GPIO_4 35 1.8V IO Audio SLIMBUS data1
Six ports inter-IC sound (I2S) interfaces can connect audio devices.
C40x SoM
QCS40x
Low power audio core
GPIO configurations
SLIMBUS
I2S
SWR
DMIC
nicholas.wang_thundercomm.com
2022-07-21 2:34:47 AM CST