Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
The AUXI input is a passive network applying –14dB gain followed by the transmit
part of the CODEC.
Figure 12: Auxiliary input connection to Q64 Wireless CPU
®
Electrical Characteristics of AUXI
Parameters Min Typ Max Unit
DC Characteristics 0 V
AC Characteristics
KΩ
Z2 60
200 Hz<F<4 kHz
AT+VGT*=2 40 mVrms
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WA_DEV_Q64_PTS_001-003 January 9, 2009
AT+VGT*=1 190
Maximum working
voltage
AT+VGT*=0 850
Positive +12 V Maximum rating
voltage
Negative -2 V
• *The input voltage depends on the input microphone gain set by AT command. Please refer to the
document
[4] AT Command Interface Guide for Open AT® Firmware v6.5.