HDMIÈȲå°ÎÔÀí¼°ÐźŽâÎö
Ëæ×ŸßÇå¼¼ÊõµÄ¿ìËÙ·¢Õ¹£¬Ä¿Ç°Ö÷Á÷µÄÊÓÌýÉ豸¡¢ÊýÂëÉ豸¡¢±Ê¼Ç±¾µÈ¼ÆËã»úÉ豸¶¼Å䱸ÓÐHDMI½Ó¿Ú£¬µ«ÊÇ»¹ÊÇÓкܶàÅóÓÑÃǶ¼²»Á˽âHDMIÖеÄÈȲå°ÎÊÇÔõô¼ì²â£¬ÒÔ¼°HDMIÆäËûÐźŵÄÓô¦¡£Õë¶Ô´ËÀàÎÊÌ⣬½ÓÏÂÀ´£¬¾ÍÓÉС±àΪ´ó¼Ò½²½âÒ»ÏÂHDMIµÄÐźÅ֪ʶ¡£
ËùνÈȲå°Î¹¦ÄÜ£¬¼òµ¥Ëµ¾ÍÊÇ¿ÉÒÔÔÚ²»¹Ø±ÕϵͳºÍÉ豸µçÔ´µÄÇé¿öÏ£¬Ö±½Ó´øµçËæÒâ°Î²åÒ²²»»áÔì³ÉË𻵣¬´ó´óÔöÇ¿ÁËʹÓñã½ÝÐÔ¡£ÈȲå°ÎÊÇÒ»Ïî¹Ø¼ü¼¼Êõ£¬Ìá¸ßÁËϵͳµÄ¿É¿¿ÐÔ¡¢¿ìËÙάÐÞÐÔ¡¢ÈßÓàÐԺͶÔÔÖÄѼ°Ê±»Ö¸´µÄÄÜÁ¦¡£
HDMIµÄÈȲå°Î¼ì²â£¨HPD£©
HPD£ºHot Plug Detection£¬¼ò³ÆÈȲå°Î¼ì²â¡£±ê×¼HDMI½Ó¿ÚµÄµÚ19pinµÄ¹¦ÄܾÍÊÇÈȲå°Î¼ì²âHPD£¬Õâ¸öÐźÅ×÷ΪHDMI·¢ËÍÆ÷ÅжÏÊÇ·ñÁ¬½ÓHDMIÏÔʾÉ豸½øÐÐÐźŴ«ÊäµÄÒÀ¾Ý¡£
ÉÏͼÊÇHDMIÏÔʾÆ÷µÄ½Ó¿Úµç·¡£µ±ÏÔʾÆ÷ºÍÖ÷»úÁ¬½Óʱ£¬Ö÷»ú¹©µç¸øÏÔʾÆ÷µÄ18pin¡ª¡ªHDMI_A_5V£¬´Ëʱ¸ÃÒý½ÅÓÐ5Vµçѹ¡£HPA_A/INT2Òª·ÖÁ½ÖÖÇé¿öÌÖÂÛ£º
1.ÏÔʾÆ÷¿ªÆô£»´ËʱVCC_3V3ÊÇÓеçѹµÄ£¬¼´Q3µ¼Í¨£¬Q2½ØÖ¹¡£ÒòΪHPA_A/INT2ͨ¹ý1kÉÏÀµ½5V£¬Òò´Ë¸ÃÒý½ÅΪ¸ßµçƽ¡£
2.ÏÔʾÆ÷¹Ø±Õ£»´ËʱVCC_3V3ûÓеçѹµÄ£¬¼´Q3½ØÖ¹£¬Q2µ¼Í¨£¬HPA_A/INT2½ÓµØ£¬¹ÊHPA_A/INT2ÊÇµÍµçÆ½¡£
µ±Ö÷»ú¼ì²âµ½HPA_A/INT2ÊÇ¸ßµçÆ½Ê±£¬Ö÷»ú»áͨ¹ýÊý¾ÝͨµÀDDC£¨DDC I2C×ÜÏߣ©¶ÁÈ¡ÏÔʾÆ÷´æ´¢Æ÷µÄEDIDÊý¾Ý£¨À©Õ¹ÏÔʾÆ÷ʶ±ðÊý¾Ý£©£¬Èç¹û¼ì²âµ½ÏÔʾÆ÷µÄ¹¤×÷ģʽ·¶Î§ÓëÏÔ¿¨ÏàÊÊÓ¦£¬ÔòÖ÷»úϵͳ¿ÉÒÔ¼¤»îÏÔ¿¨ TMDSÐźŷ¢Ë͵ç·£¨Êý×ÖÊÓÆµÐźŷ¢Ë͵ç·£©¡£
HPDµçѹҪÇó£º
µ±HPDÒý½Åµçѹ´óÓÚ2Vʱ£¬ÅжÏÏÔʾÆ÷ÓëÖ÷»úÁ¬½Ó£ºµ±¼ì²âµ½HPDÒý½ÅµçѹСÓÚ0.8Vʱ£¬ÔòÅжÏÏÔʾÆ÷ÓëÖ÷»úÁ¬½ÓÒѾ¶Ï¿ª¡£
DDCͨµÀ£¨I2C£©
DCC£ºDisplay Data Channel¡£×÷Ó㺸æËßÖ÷»ú£¬ÏÔʾÆ÷µÄÉú²ú³§ÉÌ¡¢Éú²úÈÕÆÚ¡¢Ö§³Ö·Ö±æÂʵÈÐÅÏ¢¡£Ä¿µÄ£ºÊµÏÖ¼´²å¼´Óá£
EDID(Extended Display Identification DATA£¬¼´À©Õ¹ÏÔʾʶ±ðÊý¾Ý)£¬×î³õÊÇΪPCÏÔʾÆ÷ÉèÖõÄÓÅ»¯ÏÔʾ¸ñʽ¶øÉè¼ÆµÄ¹æ·¶£¬´æ´¢ÔÚÏÔʾÆ÷רÓõÄ1KbµÄEEROM´æ´¢Æ÷ÖÐ(¼´EDIDÊý¾Ý½á¹¹ÊÇ128Bytes)¡£
HDMI½Ó¿ÚÔÚÊý×ÖµçÊÓÖеÄEDIDÊý¾Ý½á¹¹£¬ÓëPCÏÔʾÆ÷µÄ×î´óÇø±ðÊDZà³ÌÊý¾Ý¿ÉÒÔÊÇ128ByteµÄ±¶Êý£¬Ëü²»½ö¹æ¶¨Êý×ÖµçÊÓÏÔʾµÄ¸ñʽ£¬Ò²¹æ¶¨Êý×ÖÊÓÆµÐźźÍÊý×ÖÒôƵÐźţ¬»ù±¾µÄ128ByteÒÔÍâµÄÊý¾Ý¶¼ÊǸ½¼ÓÊý¾Ý£¬ÔÚ»ù±¾Êý¾ÝµÄµÚ127¸ö×Ö½Ú¶¨ÒåEDIDµÄ¸½¼ÓÊý¾Ý¿éÊýÁ¿¡£
CECÐźÅ
CEC£ºConsumer Electronics Control£¬Ïû·ÑÀàµç×Ó¿ØÖÆ¡£Í¨¹ýCECÐźÅÈÃÓû§¿ÉÒÔ¿ØÖÆHDMI½Ó¿ÚÉÏËùÁ¬½ÓµÄ×°Öá£Èçµ¥¼ü²¥·Å(One Touch Play)£¬ÏµÍ³´ý»ú(System Standby)¡£¼´ÊÇÈç¹ûÓû§½«Ó°µú·Å½øÀ¶¹â²¥·ÅÆ÷ʱ£¬µçÊÓ»áÓÉÓÚCECÐźŵÄ֪ͨ¶ø×Ô¶¯¿ª»ú£¬È»ºóÊÓÆµÍ¨µÀÒà»á×Ô¶¯Çл»µ½²¥·ÅÆ÷Á¬½ÓµÄͨµÀÉÏ¡£¶øµ±Óû§¹ØµôµçÊÓʱ£¬CECÐźÅÒà»á֪ͨHDMIÏàÁ¬½ÓµÄ×°ÖÃһͬ½øÈë´ý»ú¡£ÓÉÓÚÕâÑù£¬ËùÒԾͿÉÒÔÍêÈ«±ä³Éµ¥Ò»Ò£¿ØÆ÷¿ØÖÆËùÓÐHDMIÁ¬½ÓµÄ×°Öá£
×ÛÉÏËùÊö£¬µ±HDMIÏ߲嵽É豸ºó£¬HPDÒý½Å»á±»À¸ß£¬·¢ËÍÐźŶ˼ì²âµ½Õâ¸ö¸ßµçƽÐźźó²Å»á·¢ËÍHDMIÐźš£µ±HDMI´«Êä¸ßËÙÊý×ÖÐźÅʱ£¬ÎªÁËÖ§³Ö½Ï¸ßµÄ´«ÊäËÙ¶È£¬·¢ËÍÆ÷Óë½ÓÊÕÆ÷µÄоƬ¶¼»á²ÉÓÿ¹¾²µç¼¼Êõ±£»¤µç·¡£µ«Ò»Ð©¼¼Êõ²»¹ý¹Ø»ò͵¹¤¼õÁϵÄHDMI´«ÊäÏߣ¬ÓÉÓÚûÓкÏÀíµÄ·À¾²µçÉè¼Æ»òÕßÊǾøÔµÐÔÄÜ´¦Àí²»¿ÆÑ§£¬¾ÍÈÝÒ×µ¼Ö²úÉúÈȲå°ÎËð»µÉ豸µÄÇé¿ö·¢Éú¡£ËùÒÔ£¬Ñ¡¹º×¨Òµ¹âÏËÏ߯·ÅƲúÆ·ºÜ¹Ø¼ü¡£
ÔÎıêÌâ : HDMIÈȲå°ÎÔÀí¼°ÐźŽâÎö


ͼƬÐÂÎÅ
-
80ÒÚÃÀÔª¹âÏ˽ÓÈëÊг¡ÕýÔâÓö³å»÷
-
¡°¶«ÊýÎ÷Ë㡱 ³¬¼¶´ó¹¤³Ì¼´½«ÉÏÂí
-
ÍõÕ¨£¡ºàͨÁ¿²ú400G¹è¹âÄ£¿é
-
¡¸¿µÄþµÍËðºÄ¹âÏË50ÖÜÄ꡹רÌâϵÁÐ3£ºÓïÒôͨ»°ÐÂʱ´ú
-
¡¸¿µÄþµÍËðºÄ¹âÏË50ÖÜÄ꡹רÌâϵÁÐ2£º¹âÏ˳ÉÕæ
-
ר·Ã|EXFO£º¾Û½¹¸ßËÙÁìÓò£¬´òÔìÈ«ÐÂδÀ´
-
ר·Ã|³¤¹âͨÐÅÒ¶¶«£º¼á³Ö×ß³öÈ¥Õ½ÂÔ£¬´òºÃº£Íâ¹¥¼áÕ½
-
ר·Ã|»ô¶û±ÈÌØÀîÑô£º½ô¸ú¿Í»§½Å²½£¬ÓÃÐÄ×öºÃ²úÆ·
×îл¸ü¶à
-
11ÔÂ29ÈÕÁ¢¿Ì²Î¼Ó>>>OFweek2023ÖйúÓÅ.ÖÇËãÁ¦Äê¶ÈÆÀÑ¡
-
¼´ÈÕ-11.30Ãâ·Ñ±¨Ãû>>¡¶2023ÔÆ¼ÆËãÓëͨÐÅ5GÀàÓÅÐã²úÆ·&½â¾ö·½°¸ºÏ¼¯¡·
-
¾«²Ê»Ø¹ËÁ¢¼´²é¿´>>¡¾ÔÚÏßÖ±²¥¡¿5G/6G ?̽Ë÷ÏÂÒ»´úÎÞÏß¼¼Êõ
-
¾«²Ê»Ø¹ËÁ¢¼´²é¿´>>É¯Òæ²©¡ª¡ªAnsys HFSSµÍ¹ìµÀÎÀÐÇÌìÏß·ÂÕæ¼¼ÊõÓ¦ÓÃ
-
¾«²Ê»Ø¹ËÁ¢¼´²é¿´>>½ðÉýÑô¹ú²úDC/DCͨÐŵçÔ´ÔÚÏßÑÐÌÖ»á
-
¾«²Ê»Ø¹ËÁ¢¼´²é¿´>>¡¾Êǵ¿Ƽ¼¸Ð¶÷Ô¡¿¹¤³Ìʦ¼¼Êõ¿ñ»¶»î¶¯£¡
ÍÆ¼öרÌâ
- 1СÃ×14ÁÁÏ࣬Ê×·¢æçÁú8Gen 3£¡
- 2ÀºÚ¡°ÖйúGPUÖ®¹â¡±£¬ÃÀ¹ú¼Éµ¬Ä¦¶ûÏß³Ìʲô£¿
- 31400̨¹â¿Ì»ú£¬ASMLͻȻ´ó¾ÙÇãÏú
- 4Í»·¢£¬¸»Ê¿¿µ±»µ÷²é£¡
- 5¹â¿Ì»úÖ®¸¸·¢Éù£¬ÖйúоƬ¿É×ÔÖ÷Ñз¢5ÄÉÃ×
- 6¹ų̀Ãú¼ÓÂë1400ÒÚǨ³§¸°Ó¡£¬Èç½ñÓÖÏë»ØÀ´
- 75ÄÉÃ×ÎÞÐèEUV£¬ASMLµÄ¹â¿Ì»ú½«³É·ÏÌú£¿
- 8¹ú²úÆ·ÅÆáÈÆðÍÆ¶¯¹ú²úоƬÊ×´ÎõÒÉíǰʮ
- 9¹ú²ú5GоƬµÄÓ°ÏìÓжà´ó£¿
- 10Æ»¹ûA17Pro×îÇ¿¶ÔÊÖæçÁú8Gen3Õýʽ·¢²¼£¡
- ¸ß¼¶Èí¼þ¹¤³Ìʦ¹ã¶«Ê¡/ÉîÛÚÊÐ
- ×Ô¶¯»¯¸ß¼¶¹¤³Ìʦ¹ã¶«Ê¡/ÉîÛÚÊÐ
- ¹âÆ÷¼þÑз¢¹¤³Ìʦ¸£½¨Ê¡/¸£ÖÝÊÐ
- ÏúÊÛ×ܼࣨ¹âÆ÷¼þ£©±±¾©ÊÐ/º£µíÇø
- ¼¤¹âÆ÷¸ß¼¶ÏúÊÛ¾ÀíÉϺ£ÊÐ/ºç¿ÚÇø
- ¹âÆ÷¼þÎïÀí¹¤³Ìʦ±±¾©ÊÐ/º£µíÇø
- ¼¤¹âÑз¢¹¤³Ìʦ±±¾©ÊÐ/²ýÆ½Çø
- ¼¼Êõר¼Ò¹ã¶«Ê¡/½ÃÅÊÐ
- ·â×°¹¤³Ìʦ±±¾©ÊÐ/º£µíÇø
- ½á¹¹¹¤³Ìʦ¹ã¶«Ê¡/ÉîÛÚÊÐ
·¢±íÆÀÂÛ
ÇëÊäÈëÆÀÂÛÄÚÈÝ...
ÇëÊäÈëÆÀÂÛ/ÆÀÂÛ³¤¶È6~500¸ö×Ö
ÔÝÎÞÆÀÂÛ
ÔÝÎÞÆÀÂÛ