Cirrus Logic CDB48500-USB - Manual (Page 16)

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3.1 CDB48500 System Block Descriptions
3.1.1 Audio Inputs
3.1.1.1 Analog Line-level Inputs
• Connector Type: RCA Female
• Absolute Maximum Signal Level: +6.5V
• Absolute Minimum Signal Level: GND - 0.7V
• Full Scale Amplitude: 2V RMS
• Reference Designators: J4, J6-J10, J12, J26-J30, or AIN1A - AIN6B
3.1.1.2 Digital Optical Input
Note: Digital Optical Input is PCM only as there is no multi-channel decoder present on CDB48500-USB.
• Connector Type: Fiber Optic RX for Digital Audio, JIS F05 (JIS C5974-1993 F05)
• Reference Designator: J2, or SPDIF_RXP
3.1.1.3 Digital Coaxial Input
Note: Digital Coaxial Input is PCM only as there is no multi-channel decoder present on CDB48500-USB.
• Connector Type: RCA Female
• Maximum Signal Level: +3.3V
• Minimum Signal Level: GND - 0.7V
• Reference Designator: J31, or SPDIF_RXN
3.1.1.4 Microphone Input
• Absolute Maximum Signal Level: +5V
• Absolute Minimum Signal Level: GND - 0.7V
• Full Scale Amplitude: 7mVp-p
• Reference Designator: J5
The microphone preamplifier shares the AIN1_5 ADC with the AIN3_A RCA jack. Only one analog source can
be sampled at any given time. When the microphone input is selected, the AIN3_A audio jack is ignored. The
default configuration enables the AIN3_A audio jack.
3.1.2 Audio Outputs
3.1.2.1 Analog Line-level Outputs
• Connector Type: RCA Female
• Full Scale Amplitude: 1.21V RMS
• Reference Designators: J13-J16, J33-J40, or AOUT_1A - AOUT_6B
3.1.2.2 Headphone Output
• Connector Type: 1/8” TRS Female
• Full Scale Amplitude: 3.53 V RMS
• Reference Designator: J20, or HP_OUT