Thales Gemalto AGS2-E - NAU8822 Audio Codec Adapter; Interfaces

Audio Codec Adapter Setup for Cinterion
®
Modules
2.2 NAU8822 Audio Codec Adapter
33
 audio_codec_adapter_setup_v04 2019-10-16
Confidential / Released
Page 11 of 34
2.2 NAU8822 Audio Codec Adapter
The NAU8822 Audio Codec Adapter is based on the NAU8822 stereo audio voice codec from
Nuvoton. The adapter board can be plugged to the DSB75 (or DSBmini) in order to be used
with a variety of Cinterion
®
modules (see Section 1.2), and supports the following features:
The Audio Codec Adapter supports the following features:
• Directly connects to DSB75 (or Mini-DSB)
• Most important configuration settings are accessible via DIP switch
• Almost all configuration settings are accessible via RS232 serial interface
• PCM/I2S support
• BCLK = 128, 256, 512, 2048kHz
• Master/Slave mode
• 16kHz WB/8kHz NB mode
• Handset/Headphone support
• Short/long FSYNC
• Sending DTMF sound sequences on analogue or on digital (long FSYNC Intel mode)
• Recognizing beep sounds by means of FFT on analogue or on digital (long FSYNC Intel
mode)
2.2.1 Interfaces
Figure 6 and Figure 7 show various interfaces on the top and bottom sides of the Audio Codec
Adapter.
Figure 6: Audio Codec Adapter top view
Top
RS232
Reset
Interface
button
DIP
Headset
(Microphone,
Headphone)
3.5mm jacks
Switches