Product Info

Smart Module Series
SC600Y&SC600T Hardware Design
SC600Y&SC600T_Hardware_Design 79 / 134
3.23. Audio Interfaces
SC600Y/SC600T provides three analog input channels and three analog output channels. The following
table shows the pin definition.
Table 28: Pin Definition of Audio Interfaces
Pin Name Pin No. I/O Description Comment
MIC1_P 44 AI Microphone input for channel 1 (+)
MIC1_N 45 AI Microphone input for channel 1 (-)
MIC_GND 168 Microphone reference ground
If unused, connect this
pin to the ground.
MIC2_P 46 AI Microphone input for headset (+)
MIC3_P 169 AI Microphone input for channel 2 (+)
MIC_BIAS 167 AO Microphone bias voltage
EAR_P 53 AO Earpiece output (+)
EAR_N 52 AO Earpiece output (-)
SPK_P 55 AO Speaker output (+)
SPK_N 54 AO Speaker output (-)
HPH_R 51 AO Headphone right channel output
HPH_REF 50 AI Headphone reference ground
It should be connected
to main GND.
HPH_L 49 AO Headphone left channel output
HS_DET 48 AI Headset insertion detection High level by default.
 The module offers three audio input channels, including one differential input pair and two
single-ended channels. The three sets of MICs are integrated with internal bias voltage.
 The output voltage range of MIC_BIAS is programmable between 1.6V and 2.85V, and the maximum
output current is 3mA.
 The earpiece interface uses differential output.
 The loudspeaker interface uses differential output as well. The output channel is available with a
Class-D amplifier whose maximum output power is 1.5W when load is 8Ω.
 The headphone interface features stereo left and right channel output, and headphone insertion
detection function is supported.