> Customers that wish to sample or purchase the ADV7672 must be licensed HDMI 2.1 adopters listed at HDMI.org and licensed HDCP 2.x adopters listed at Digital-CP.com. ====== KVM ====== hi this is kvm all about kvm only kvm what im trying to get is seemless switching between sources. this calls for a unified EDID "fingerprint" from all sources. ┌─► HDMI Dummy plug GPU ──► 1x2 splitter │ └─► KVM ===== dummy hdmi ==== has circuitry to store and transmit EDID (Extended Display Identification Data) emulation information to the GPU. by using an EEPROM (Electrically Erasable Programmable Read-Only Memory) chip programmed with the EDID data of a typical monitor. a.k.a hdmi emulator plug there are such dummys that have a passthru female socket. i have not find a nice one yet ===== generic HDMI splitter 1x2 ===== i got the following in my weekly meeting with [[https://www.aliexpress.com/item/1005005972745533.html|aliexpress packges]] at the mailroom. === MS9332 IC ==== The MS9332 is a one-to-two active splitter that supports a signaling rate up to 3.0Gbps. With 3.0Gbps capability, the MS9332 can support the new 4K@30Hz video format. The MS9332 equalizes incoming TMDS data with optimal quality regardless of the incoming signal quality. The highly acclaimed equalization technology provides for support of long or low-quality HDMI cables at even the highest speeds. Input terminations of the TMDS inputs and output current levels are both programmable. The chip also supports on-chip HDCP Keys RAM and EDID Memory. [[https://archive.is/PfvGA|mirror]] {{ :tamiwiki:projects:pasted:20240129-224517.png?x500|Function Block Diagram }} === Features === * Compliant with HDMI 1.4b * Support One Port input，2 Port output * Support HDMI 4K@30Hz * Adaptive input equalization * Output Pre-emphasis * Support 10/12/16 bit Deep Color input/output * Automatically monitor HDMI input signal * Automatically monitor the status of HDMI output devices * Support 5V TTL DDC * Integrated pre-programmed HDCP keys * Embedded EDID RAM saves external EDID ROM costs * No external crystal oscillations are required * LQFP64 (10mm×10mm) ==== teardown ==== {{tamiwiki:projects:pxl_20240129_202515495.jpg?x400}} {{tamiwiki:projects:pxl_20240129_202419111.jpg?x400}} ==== EDID ==== {{:tamiwiki:projects:pasted:20240130-032202.png}} https://i.imgur.com/8wUaQZq.jpeg {{:tamiwiki:projects:pasted:20240130-032249.png}} https://www.eevblog.com/forum/reviews/teardown-panlong-hdmi-audio-splitter/msg701691/ ==== parts ==== http://www.ultrasemi.com/index.php/td-3-48-77-255 ==== suppliers ==== === local === [[https://topirzul.co.il/%D7%A7%D7%98%D7%92%D7%95%D7%A8%D7%99%D7%94-%D7%A8%D7%90%D7%A9%D7%99%D7%AA-2/%D7%9B%D7%91%D7%9C%D7%99%D7%9D-%D7%9E%D7%AA%D7%90%D7%9E%D7%99%D7%9D-%D7%9E%D7%A4%D7%A6%D7%9C%D7%99%D7%9D-%D7%9E%D7%9E%D7%99%D7%A8%D7%99%D7%9D-hdmi/%D7%9E%D7%9E%D7%99%D7%A8%D7%99%D7%9D-%D7%95%D7%9E%D7%A4%D7%A6%D7%9C%D7%99%D7%9D-hdmi-switch-convertor.html|topirzul]]