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OMTP Local Connectivity Recommendations v1 0
http://www.omtp.org/OMTP_Local_Connectivity_Wired_Analogue_Audio_v1_0.pdf
OMTP LOCAL CONNECTIVITY: WIRED ANALOGUE AUDIO This document contains information that is confidential and proprietary to OMTP Limited. The information may not be used, disclosed or reproduced without the prior written authorisation of OMTP Limited, and those so authorised may only use this information for the purpose consistent with the
OMTP BONDI specifications
May-07 - OMTP IMS Functional Requirements v1.0 (0.39 MB) Apr-07 - OMTP Legacy Customer Support For Instant Messaging and Presence Service v1.0 (0.31 MB) Apr-07 - OMTP Local Connectivity Wired Analogue Audio v1.0 (0.18 MB) Mar-06 - OMTP Customisation Enabler v1.0 (0.33 MB) Feb-06 - OMTP OMTP Java™ with Focus On CDC v1.0 (3.88 MB) Dec-05 - OMTP ...
DIO4480 USB Type-C Analog Audio Switch with Protection ...
https://www.dioo.com/uploads/product/20210601/dafc4c3d5b4e9ae99623913b1a101d30.pdf
analog switch used in portable multimedia devices, which supports analog audio headsets. DIO4480 can detect OMTP, CTIA or 3-Pole headset and configurate pinout automatically. DIO4480 shares common Type−C pins to pass USB2.0 signal and analog audio signal, sideband use wires and analog microphone signal. DIO4480 also supports
Surface 3 Laptop audio jack specification - Microsoft ...
https://answers.microsoft.com/en-us/surface/forum/all/surface-3-laptop-audio-jack-specification/810bc95e-a036-4d7c-a5d8-da16eec0a0e4
Surface 3 Laptop audio jack specification Surface 3 Laptop 15" Is the 3.5mm audio jack wired to CTIA or OMTP standard please? I want to purchase the correct TRRS to 2 x TRS break out cables so that I can put a line level input IN and monitor it on the headphone OUT. My device is still in warranty so I do not want to poke the wrong jack in it! ...
CTIA vs. OMTP: Similarities, Differences, and Features ...
https://thecablesland.com/ctia-vs-omtp/
OMTP is an older type of TRRS used for cellphones and early smartphones. CTIA or AHJ is the current standard for anything that’s not Apple-related. Apple also makes iPhone-specific headsets and audio accessories under the CTIA standard, but they’re practically OMTP when hooked up to non-iOS devices.
3.5 mm Headset: Accessory Specification | Android Open ...
https://source.android.com/devices/accessories/headset/plug-headset-spec
For the OMTP pinout, switch the positions of the MIC and GND segments. Figure 1. Reference headset test circuit 1. The following diagram for Reference Headset Test Circuit 2 shows how the actual resistor values (R1 - R4) are altered to meet this specification. Figure 2. Reference headset test circuit 2
TPA6166A2: Android Wired Handset V1.1 compliant - Audio ...
https://e2e.ti.com/support/audio-group/audio/f/audio-forum/950328/tpa6166a2-android-wired-handset-v1-1-compliant
Support 3.5-mm Audio accessory detection (Android Wired Headset Specification V1.1 compliant) 9. Support 3.5-mm Stereo 3-pole headphone detection. 10. Support 3.5-mm Stereo 4-pole CTIA and OMTP handset detection. 11. Support 3.5-mm jack detection. 12. 2-wire I2C compatible interface. Hope these information is helpful.
3.5 mm Headset Jack: Device Specification | Android Open ...
https://source.android.com/devices/accessories/headset/jack-headset-spec
3.5 mm Headset Jack: Device Specification. To achieve compatibility with the 3.5 mm plug headset specification, devices that include a 4 conductor 3.5 mm audio jack must meet the following specifications. For Android compatibility requirements, refer to the Analog audio ports section of the Android CDD.
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