User Tools

Site Tools


tamiwiki:projects:kvm

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
tamiwiki:projects:kvm [2024/01/29 22:37] – created yairtamiwiki:projects:kvm [2024/04/06 11:30] (current) yair
Line 1: Line 1:
 +<WRAP center round important 60%>
 + > 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.
 +</WRAP>
 +
 +====== KVM ======
 hi this is kvm all about kvm only 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. 
 +
 +
 +<code>
 +                     ┌─► HDMI Dummy plug
 +GPU ──► 1x2 splitter │
 +                     └─► KVM
 +</code>
 +
 +
 +
 +
 +===== 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]]
tamiwiki/projects/kvm.1706560626.txt.gz · Last modified: 2024/01/29 22:37 by yair