³£¹æµÄ²î·Ö¾§ÕñÊä³ö²¨ÐξùÊôÓÚ·½²¨£¬ÇÒÊä³ö¹¦ÂʱȽϴó£¬Çý¶¯ÄÜÁ¦½ÏÇ¿£¬µ«Ð³²¨·ÖÁ¿·Ç³£¶à¡£ÕâÁ½ÖÖÊä³öģʽÊDzî·Ö¾§ÕñµÄÊä³öÂß¼£¬Á½ÕßµÄÏàλ¸ÕºÃÏà·´£¬Òò´ËËüÃÇÄܹ»×é³É¸ü¸ßÐÔÄܵÄϵͳ£¬Í¬Ê±»¹ÄÜÏû³ý¹²Ä£ÔëÉù¡£²î·ÖÊä³ö¿ÉÒÔÂú×ã¸ßËÙÊý¾Ý´«Ê䣬ӦÓÃÓÚ¸ßËÙ¼ÆËã»ú£¬Êý×ÖͨÐÅϵͳ£¬À״²âÁ¿ÒÇÆ÷£¬ÆµÂÊºÏ³ÉÆ÷µÈ¡£
ÏÂÃæÑïÐ˽âÎö³£¹æ²î·Ö¾§Õñ³£¼ûµÄÁ½ÖÖÊä³ö²¨ÐΣº
Ò»¡¢PECLÊä³ö
Ó¢ÎÄ£ºPositive Emitter Coupled Logic
ÖÐÎÄ£ºÕýÉ伫ñîºÏÂß¼µçƽ
PECLÔÚ¸ßËÙÁìÓòÄÚÒ»¸ö·Ç³£ÖØÒªµÄÂß¼µç·¡£Ëüµç·Ëٶȿ죬Çý¶¯ÄÜÁ¦Ð¡£¬ÔëÉùС£¬¸ßƵ¡£µ«Êǹ¦ºÄ´ó£¬²»Í¬µÄµçƽ²»ÄÜÇý¶¯¡£Èç¹ûÓõ͵çѹ3.3V/2.5VµçÔ´£¬Ôò±»³ÆÎªLVPECL£¬ ¼´Low Voltage PECL¡£
PECLÊä³ö¾§ÕñÓÅÊÆ£º
1.ÓÉÓÚ´óµçѹ°Ú¶¯£¬¾ßÓзdz£ºÃµÄ¶¶¶¯ÐÔÄÜ¡£
2.ÀíÏëÓ¦ÓÃÓÚ¸ßËٵ緡£
3.Äܹ»Çý¶¯³¤´«ÊäÏß¡£
PECLÊä³ö¾§Õñȱµã£º
1.Óëµ¥¶ËÊä³öÏà±È£¬²î·ÖÊä³öºÍÍⲿֱÁ÷Æ«Öûá²úÉú¸ü´óµÄ¹¦ºÄ¡£
2.Óë1.8VµçÔ´²»¼æÈÝ¡£
¶þ¡¢LVDS Êä³ö
Ó¢ÎÄ£ºLow Voltage Differential Signaling
ÖÐÎÄ£ºµÍµçѹ²î·ÖÐźÅ
LVDSÊä³öÊÇÓÉÃÀ¹ú¹ú¼Ò°ëµ¼Ì幫˾Ñз¢³öÀ´µÄ¡£CMOS/TTL½Ó¿Ú´«ËÍËÙÂʲ»¸ß£¬¾àÀë½Ï¶Ì£¬¿¹EMIµç´Å¸ÉÈÅÄÜÁ¦½Ï²î¡£È»¶ø£¬LVDS¿ÉÒÔ½â¾öÕâЩÎÊÌ⣬ËÙÂʸߣ¬ÔëÉùµÍ£¬¾àÀëÔ¶£¬´«Êä׼ȷ¡£LVDSÊä³öƵÂÊ×î¸ß¿É´ïµ½2.1GHz£¬µçѹÔÚ1.8~3.3V¡£
LVDSÊä³öµÄÓÅÁӵ㣺
1¡¢ÓÉÓÚ½ÏСµÄµçѹ°Ú·ù(ͨ³£Ô¼Îª350mV)£¬ÓëLV-PECL²î·Ö¾§ÕñÊä³öÏà±È¹¦ºÄ¸üµÍ¡£
2¡¢²»Ò×ÊÜÔëÒôÓ°Ïì¡£
3¡¢ÓëCMOS/TTLÏà±È£¬EMI·øÉä¸üµÍ¡£
LVDSµÄÁÓÊÆÊÇÓëPECLÏà±È£¬¶¶¶¯ÐÔÄܽµµÍ¡£
SiT9121ÊÇSiTimeÍÆ³öµÄÐÔÄܸüÇ¿µÄ²î·ÖÕñµ´Æ÷£¬SIT9121Ö§³ÖLVPECLºÍLVDSÊä³öÐźÅÀàÐÍ¡£¿É±à³ÌƵÂʾ«¶È´ïСÊýµãºóÁùλ£¬È·±£·¢»Óϵͳ¸ßÐÔÄÜ¡£¾¹ý50000G¿¹³å»÷¼°70G¿¹Õñ²âÊÔ£¬MTBF(ƽ¾ùÎÞ¹ÊÕÏʱ¼ä)´ï5ÒÚСʱ£¬¸ßÎȶÈÓ¦ÓñØÑ¡¡£
ÍÆ¼öÔĶÁ