https://wiki.geekworm.com/index.php?action=history&feed=atom&title=UAC 2026-06-06T04:31:14Z Revision history for this page on the wiki MediaWiki 1.43.8 https://wiki.geekworm.com/index.php?title=UAC&diff=29609&oldid=prev 2026-04-30T03:13:32Z

<p>Add {{Deprecated}} template</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:13, 30 April 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">{{Deprecated}}</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{GD Template Impl}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{GD Template Impl}}</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:IMG 3916.jpg|thumb|right|UAC]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:IMG 3916.jpg|thumb|right|UAC]]</div></td></tr> <!-- diff cache key wiki_2026:diff:1.41:old-5403:rev-29609:php=table --> </table>

Admin https://wiki.geekworm.com/index.php?title=UAC&diff=5403&oldid=prev 2018-04-17T09:23:27Z

<p><span class="autocomment">Download</span></p> <p><b>New page</b></p><div>{{GD Template Impl}}<br /> [[File:IMG 3916.jpg|thumb|right|UAC]]<br /> [[File:IMG 3918.jpg|thumb|right|UAC]]<br /> [[File:IMG 3919.jpg|thumb|right|UAC]]<br /> <br /> ==Overview==<br /> * It adopted the Texas Instruments single-chip PCM2912A, USB stereo audio codec with a USB, 2.0-compliant, full-speed protocol controller and an Active Front End (AFE) function for headset applications.<br /> * The USB protocol controller works with no softwarecode, but USB descriptors can be modified on<br /> * request. The PCM2912A employs SpAct?architecture, TI’s unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enables independent playback and<br /> * record sampling rates with low clock jitters.<br /> <br /> ==Features==<br /> On-Chip USB Interface:<br /> <br /> * With Full-Speed Transceivers<br /> * Fully Compliant With USB 2.0 Specification<br /> * Certified By USB-IF<br /> * Partially Programmable Descriptors<br /> * Adaptive Isochronous Transfer for Playback<br /> * Asynchronous-Isochronous Transfer for Record<br /> * Bus Powered<br /> <br /> 16-Bit Delta-Sigma ADC and DAC<br /> <br /> Sampling Rate:8, 11.025, 16, 22.05, 32, 44.1, or 48 kHz<br /> <br /> Mono ADC with Microphone Input:<br /> <br /> * Analog Performance at VBUS = 5 V:<br /> * THD+N: 0.01%<br /> * SNR: 92 dB<br /> * Dynamic Range: 90 dB<br /> <br /> Stereo DAC With Headphone Output:<br /> <br /> * Analog Performance at VBUS = 5.0 V<br /> * THD+N: 0.01% (RL &gt; 10 kΩ)<br /> * THD+N: 0.02% (RL = 32 Ω)<br /> * SNR: 92 dB<br /> * Dynamic Range: 90 dB<br /> <br /> ==Packin List==<br /> * 1 x PCM2912-UAC USB Audio Card<br /> <br /> Note: The Raspberry Pi 3 model b motherboard is not included.<br /> <br /> ==Support Windows System==<br /> [[File:W800-Windows System.jpg]]<br /> ==Testing under Raspberry==<br /> <br /> 1/ Viewing system playback device:<br /> <br /> pi@raspberrypi:~$ sudo aplay -l<br /> <br /> **** List of PLAYBACK Hardware Devices ****<br /> <br /> card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]<br /> <br /> Subdevices: 8/8<br /> <br /> Subdevice #0: subdevice #0<br /> <br /> Subdevice #1: subdevice #1<br /> <br /> Subdevice #2: subdevice #2<br /> <br /> Subdevice #3: subdevice #3<br /> <br /> Subdevice #4: subdevice #4<br /> <br /> Subdevice #5: subdevice #5<br /> <br /> Subdevice #6: subdevice #6<br /> <br /> Subdevice #7: subdevice #7<br /> <br /> card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]<br /> <br /> Subdevices: 1/1<br /> <br /> Subdevice #0: subdevice #0<br /> <br /> card 1: Device [PDP Audio Device], device 0: USB Audio [USB Audio]<br /> <br /> Subdevices: 0/1<br /> <br /> Subdevice #0: subdevice #0<br /> <br /> 2/ Viewing system record device:<br /> <br /> **** List of CAPTURE Hardware Devices ****<br /> <br /> card 1: Device [PDP Audio Device], device 0: USB Audio [USB Audio]<br /> <br /> Subdevices: 1/1<br /> <br /> Subdevice #0: subdevice #0<br /> <br /> 3/ Playback test:<br /> <br /> pi@raspberrypi:~$ speaker-test -Dplughw:CARD=Device -c2 –twav<br /> <br /> you can hear : Front Left Front Right from headset.<br /> <br /> 4/ Record test:<br /> <br /> We can use below instruction record the MIC input to file test.wav.<br /> <br /> pi@raspberrypi:~$ arecord -Dplughw:CARD=Device -fcd –c1 -twav test.wav<br /> <br /> ==Testing under Raspberry==<br /> * 1/ Download debian system, burn into TF card. <br /> * 2/ Install the music player：<br /> <br /> Sudo apt-get install Qmmp. After the installation ,we can find the player under the menu bar<br /> <br /> [[File:UAC-2.jpg]]<br /> <br /> * 3/ Set UAC Module (PDP Audio Card） as default system Audio card in Preferences，and reboot<br /> <br /> ==Download==<br /> User Manual:<br /> [[File:UAC manual-1.pdf]]<br /> <br /> PCM2912A DATA:<br /> [[File:PCM2912A.pdf]]<br /> <br /> [[Category:Product Manual]]<br /> [[Category:Raspberry pi]]</div>

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