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5.8.2
Internal Audio Connectors
The conga-IC170 provides the stereo speaker, digital microphone/SPDIF, front panel HD and surround audio connectors internally.
5.8.2.1
Stereo Speaker Header
The first analog line input channels (left and right) of the Realtek ALC888S HDA audio codec are routed to connector X30, via a TPA2012D2
amplifier. The amplifier offers a maximum wattage of 2.1W per channel into 4 ohms.
Table 32 Stereo Speaker (Connector X30) Pinout Description
Pin Signal
Description
1
FRONT_L-
Analog front left (differential negative)
2
Analog front left (differential positive)
3
Analog front right (differential positive)
4
FRONT_R-
Analog front right (differential negative)
Connector Type
X30: 2 mm, 4-pin crimp style connector
Mating connector: Chyao Shiunn JS-1124-04
5.8.2.2
Digital Microphone/SPDIF
The Digital Microphone/SPDIF signals of the Realtek ALC888S HDA audio codec are routed to the internal digital microphone/SPDIF connector
X28. This connector offers two power supply pins (3,3V and 5V). Power Budget of these pins is limited to 500mA.
Internal Digital Microphone/SPDIF (Connector X28) Pinout Description
Pin Signal
Description
1
+3.3V
3.3V supply
2
DMIC_DATA
Serial data from digital MIC
3
GND
Ground
4
SPDIFO2/DMIC_CLK S/PDIF output or Digital MIC serial clock
(configurable)
5
KEY
No pin
6
+5V
5V supply
Stereo Speaker - Connector X30
Digital MIC/SPDIF - Connector X28
Pin 1
No Pin
