Cirrus Logic CRD49530-USB - Manual (Page 8)

1-3 Copyright 2008 Cirrus Logic DS705RD3
CRD49530-USB System Description
CRD49530-USB User’s Manual
1.3.1 Audio Inputs
1.3.1.1 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: J12, J26-J30, or AIN1 - AIN6
1.3.1.2 Optical Digital Inputs
• Connector Type: Fiber Optic RX for Digital Audio, JIS F05 (JIS C5974-1993 F05)
• Reference Designators: J1-J2, or SPDIF_RX0-SPDIF_RX1
1.3.1.3 Coaxial Digital Inputs
• Connector Type: RCA Female
• Maximum Signal Level: +3.3V
• Minimum Signal Level: GND - 0.7V
• Reference Designators: J31-J32, or SPDIF_RX2-SPDIF_RX3
1.3.1.4 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 AIN5 ADC with the AIN5 RCA jack. Only one analog source can
be sampled at any given time. When the microphone input is selected, the AIN5 audio jack is ignored. The
default configuration enables the AIN5 audio jack.
1.3.2 Audio Outputs
1.3.2.1 Analog Line-level Outputs
• Connector Type: RCA Female
• Full Scale Amplitude: 1.21V RMS
• Reference Designators: J33-J40, or AOUT1 - AOUT8
1.3.2.2 Optical Digital Output
• Connector Type: Fiber Optic TX for Digital Audio, JIS F05 (JIS C5974-1993 F05)
• Reference Designator: J24, or SPDIF_TX
• The S/PDIF output uses the same data line as AOUT7 and AOUT8. When the digital output has
been enabled, and you have speakers connected to AOUT7 and AOUT8 white noise will be heard.
This could damage the speakers.