{"id":5244,"date":"2025-09-03T00:00:00","date_gmt":"2025-09-03T00:00:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/knowledge-center\/ddmi-vs-ddm-in-optical-transceivers\/"},"modified":"2026-06-22T07:51:52","modified_gmt":"2026-06-22T07:51:52","slug":"ddmi-vs-ddm-in-optical-transceivers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/knowledge-center\/ddmi-vs-ddm-in-optical-transceivers","title":{"rendered":"DDMI so v\u1edbi DDM: Hi\u1ec3u r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Giao di\u1ec7n v\u00e0 Ch\u1ea9n \u0111o\u00e1n trong C\u00e1c M\u00f4-\u0111un Quang"},"content":{"rendered":"
\"DDMI<\/figure>\n\n\n\n

DDM l\u00e0 g\u00ec?<\/h2>\n\n\n\n

DDM<\/strong><\/a> l\u00e0 vi\u1ebft t\u1eaft c\u1ee7a Gi\u00e1m s\u00e1t ch\u1ea9n \u0111o\u00e1n k\u1ef9 thu\u1eadt s\u1ed1<\/strong> (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Gi\u00e1m s\u00e1t Quang h\u1ecdc K\u1ef9 thu\u1eadt s\u1ed1, hay DOM). Thu\u1eadt ng\u1eef n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn ch\u1ee9c n\u0103ng<\/strong> cho ph\u00e9p c\u00e1c nh\u00e0 khai th\u00e1c m\u1ea1ng truy c\u1eadp th\u00f4ng tin ho\u1ea1t \u0111\u1ed9ng theo th\u1eddi gian th\u1ef1c t\u1eeb c\u00e1c b\u1ed9 thu ph\u00e1t quang. Th\u00f4ng tin n\u00e0y bao g\u1ed3m c\u00e1c tham s\u1ed1 ch\u00ednh nh\u01b0 nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec7n \u00e1p cung c\u1ea5p, d\u00f2ng ph\u00e2n c\u1ef1c laser v\u00e0 c\u00f4ng su\u1ea5t quang ph\u00e1t\/thu. C\u00e1c ph\u00e9p \u0111o n\u00e0y gi\u00fap ph\u00e1t hi\u1ec7n s\u1ef1 c\u1ed1 tr\u01b0\u1edbc khi ch\u00fang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

DDMI l\u00e0 g\u00ec?<\/h3>\n\n\n\n

DDMI<\/strong><\/a> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn Giao di\u1ec7n Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1<\/strong>\u2014t\u1ee9c l\u00e0 c\u01a1 ch\u1ebf ti\u00eau chu\u1ea9n h\u00f3a (th\u01b0\u1eddng qua giao th\u1ee9c I\u00b2C) do hi\u1ec7p \u0111\u1ecbnh SFF-8472 MSA quy \u0111\u1ecbnh, nh\u1eb1m truy c\u1eadp d\u1eef li\u1ec7u DDM. Ch\u00ednh giao di\u1ec7n n\u00e0y cho ph\u00e9p c\u00e1c thi\u1ebft b\u1ecb ch\u1ee7 truy v\u1ea5n d\u1eef li\u1ec7u ch\u1ea9n \u0111o\u00e1n c\u1ee7a module m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n.<\/p>\n\n\n\n

So s\u00e1nh song song<\/h2>\n\n\n\n
\n\n<\/colgroup>

Thu\u1eadt ng\u1eef<\/p><\/th>

\u00dd ngh\u0129a<\/p><\/th>

Tr\u1ecdng t\u00e2m<\/p><\/th><\/tr>

DDM<\/strong><\/p><\/td>

Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1 (ch\u1ee9c n\u0103ng)<\/p><\/td>

C\u00e1c ch\u1ea9n \u0111o\u00e1n n\u00e0o kh\u1ea3 d\u1ee5ng<\/p><\/td><\/tr>

DDMI<\/strong><\/p><\/td>

Giao di\u1ec7n Gi\u00e1m s\u00e1t Ch\u1ea9n \u0111o\u00e1n K\u1ef9 thu\u1eadt s\u1ed1<\/p><\/td>

C\u00e1ch truy c\u1eadp ch\u1ea9n \u0111o\u00e1n<\/p><\/td><\/tr><\/tbody>\n<\/table>\n<\/figure>\n\n\n\n

\n

T\u00f3m l\u1ea1i: DDM l\u00e0 d\u1eef li\u1ec7u<\/strong>, and DDMI l\u00e0 \u0111\u01b0\u1eddng d\u1eabn<\/strong> \u0111\u1ec3 truy xu\u1ea5t d\u1eef li\u1ec7u \u0111\u00f3.<\/p>\n<\/blockquote>\n\n\n\n

V\u00ec sao s\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y quan tr\u1ecdng<\/h3>\n\n\n\n