Audio Section - Seco CCHPC-C78-C User Manual

Audio Section

According to COM HPC ® specifications, client modules can offer two dedicated SoundWire audio interface and an I2S audio interface.
Triple Audio Jack CN63
Colour Signal
Light Blue Line IN (Left + Right)
Light Green Front_OUT (Left + Right)
Pink MIC1 IN (Left + Right)
Front panel Audio header
Pin Signal Pin
1 Mic2_In_L
3 Mic2_In_R
5 Line_Out_R
7 Audio_GND
9 Line_Out_L 10
activity and Power status signalling (to be used in conjunction to the Front Panel header described at par. 3.3.8).
SoundWire and I2S header
Pin Signal
1 +1.8V_RUN
3 SNDW_DMIC_CLK1
5 SNDW_DMIC_DAT1
7 SNDW_DMIC_CLK0
9 SNDW_DMIC_DAT0
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
For this reason, interfaced to the I2S Audio Interface, on the carrier board there is an I2S Audio
Codec, type Texas Instruments TLV320AIC23B ALC888s, which manages a standard Stereo triple
connector, type LOTES ABA-JAK-028-K07 (light blue/light green/pink) or equivalent.
Furthermore, it is also available a dedicated 9-pin 2.54mm pitch Pin header for external connection
CN38
of a Line Out output and a second Mic In input.
Signal
2 Audio_GND specifications, par. 2.3.5 Table 7.
4 ---
Using this dedicated connector, it will be possible to connect any Azalia compliant panel audio
6 Mic2_Sense_Return
jack to remote audio connectors in the preferred position
Line_Out_Sense_Return
offers two standard audio jacks, two pushbuttons (for reset and power on) and two LEDs, for SATA
CN64
Pin Signal
2 I2S_CLK/SNDW_CLK2
4 I2S_DIN/SNDW_DAT2
6 I2S_LRCLK/SNDW_CLK3
8 I2S_DOUT/SNDW_DAT3
10 GND
®
It is also possible to connect external I2S or SoundWire devices by
using the dedicated connector CN64, which carries out the 2x
SoundWire and the shared I2S/Soundwire interface coming from
®
COM HPC client module.
CN64 is a dual row 10 pin, P2.54mm standard pin header, with the pinout shown in
the table on the left.
jack
63