{"id":1767,"date":"2026-03-30T05:54:11","date_gmt":"2026-03-30T05:54:11","guid":{"rendered":"https:\/\/www.tech-posts.com\/vi\/breaking-down-timing-diagrams-modular-approach\/"},"modified":"2026-03-30T05:54:11","modified_gmt":"2026-03-30T05:54:11","slug":"breaking-down-timing-diagrams-modular-approach","status":"publish","type":"post","link":"https:\/\/www.tech-posts.com\/vi\/breaking-down-timing-diagrams-modular-approach\/","title":{"rendered":"Ph\u00e2n t\u00edch C\u00e1c S\u01a1 \u0110\u1ed3 Th\u1eddi Gian: M\u1ed9t C\u00e1ch Ti\u1ebfp C\u1eadn Theo M\u00f4-\u0111un"},"content":{"rendered":"

Trong b\u1ed1i c\u1ea3nh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng k\u1ef9 thu\u1eadt s\u1ed1, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. C\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t c\u00e1ch c\u00e1c t\u00edn hi\u1ec7u h\u00e0nh x\u1eed theo th\u1eddi gian. S\u01a1 \u0111\u1ed3 th\u1eddi gian \u0111\u1ee9ng ra nh\u01b0 m\u1ed9t trong nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng nh\u1ea5t cho m\u1ee5c \u0111\u00edch n\u00e0y. N\u00f3 chuy\u1ec3n \u0111\u1ed5i logic tr\u1eebu t\u01b0\u1ee3ng th\u00e0nh m\u1ed9t d\u00f2ng th\u1eddi gian tr\u1ef1c quan, ti\u1ebft l\u1ed9 \u0111i\u1ec7u nh\u1ea3y gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i cao v\u00e0 th\u1ea5p qua c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau. Tuy nhi\u00ean, khi c\u00e1c h\u1ec7 th\u1ed1ng ng\u00e0y c\u00e0ng ph\u1ee9c t\u1ea1p, c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y c\u00f3 th\u1ec3 tr\u1edf n\u00ean qu\u00e1 t\u1ea3i. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c theo m\u00f4-\u0111un \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 gi\u1ea3i m\u00e3 s\u01a1 \u0111\u1ed3 th\u1eddi gian m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 tin c\u1eady trong vi\u1ec7c x\u00e1c minh ph\u1ea7n c\u1ee9ng.<\/p>\n

Hi\u1ec3u r\u00f5 lu\u1ed3ng d\u1eef li\u1ec7u v\u00e0 t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i ch\u1ee9c n\u0103ng. D\u00f9 b\u1ea1n \u0111ang thi\u1ebft k\u1ebf giao di\u1ec7n vi \u0111i\u1ec1u khi\u1ec3n hay m\u1ed9t giao th\u1ee9c truy\u1ec1n th\u00f4ng t\u1ed1c \u0111\u1ed9 cao, kh\u1ea3 n\u0103ng \u0111\u1ecdc v\u00e0 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y s\u1ebd ph\u00e2n bi\u1ec7t gi\u1eefa m\u1ed9t thi\u1ebft k\u1ebf v\u1eefng ch\u1eafc v\u00e0 m\u1ed9t thi\u1ebft k\u1ebf mong manh. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng g\u00f3c nh\u00ecn c\u00f3 c\u1ea5u tr\u00fac v\u00e0 theo m\u00f4-\u0111un, c\u00e1c nh\u00f3m c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro vi ph\u1ea1m th\u1eddi gian.<\/p>\n

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\"Line<\/figure>\n<\/div>\n

Hi\u1ec3u R\u00f5 C\u00e1c Ki\u1ebfn Th\u1ee9c C\u01a1 B\u1ea3n V\u1ec1 S\u01a1 \u0110\u1ed3 Th\u1eddi Gian \u23f1\ufe0f<\/h2>\n

S\u01a1 \u0111\u1ed3 th\u1eddi gian l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda v\u1ec1 c\u00e1ch c\u00e1c t\u00edn hi\u1ec7u thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i theo th\u1eddi gian. N\u00f3 v\u1ebd th\u1eddi gian theo tr\u1ee5c ngang v\u00e0 c\u00e1c tr\u1ea1ng th\u00e1i t\u00edn hi\u1ec7u theo tr\u1ee5c d\u1ecdc. \u0110\u1ecbnh d\u1ea1ng tr\u1ef1c quan n\u00e0y cho ph\u00e9p c\u00e1c k\u1ef9 s\u01b0 x\u00e1c minh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c t\u00edn hi\u1ec7u kh\u00e1c nhau trong m\u1ed9t m\u1ea1ch k\u1ef9 thu\u1eadt s\u1ed1. M\u1ee5c ti\u00eau ch\u00ednh l\u00e0 \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u \u1ed5n \u0111\u1ecbnh v\u00e0 h\u1ee3p l\u1ec7 khi \u0111\u01b0\u1ee3c th\u00e0nh ph\u1ea7n nh\u1eadn l\u1ea5y.<\/p>\n

M\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng cho b\u1ea5t k\u1ef3 s\u01a1 \u0111\u1ed3 th\u1eddi gian n\u00e0o:<\/p>\n

    \n
  • C\u00e1c \u0111\u01b0\u1eddng t\u00edn hi\u1ec7u:<\/strong>C\u00e1c \u0111\u01b0\u1eddng ngang \u0111\u1ea1i di\u1ec7n cho t\u1eebng d\u00e2y d\u1eabn ho\u1eb7c bus mang c\u00e1c t\u00edn hi\u1ec7u c\u1ee5 th\u1ec3 nh\u01b0 t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3, d\u1eef li\u1ec7u ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n.<\/li>\n
  • Tr\u1ee5c th\u1eddi gian:<\/strong>S\u1ef1 ti\u1ebfn tri\u1ec3n theo chi\u1ec1u ngang cho th\u1ea5y s\u1ef1 tr\u00f4i qua c\u1ee7a th\u1eddi gian, th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u00e1nh d\u1ea5u b\u1eb1ng nanosecond ho\u1eb7c chu k\u1ef3 \u0111\u1ed3ng h\u1ed3.<\/li>\n
  • M\u1ee9c logic:<\/strong>C\u00e1c t\u00edn hi\u1ec7u th\u01b0\u1eddng l\u00e0 nh\u1ecb ph\u00e2n, \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ee9c Cao (1) ho\u1eb7c Th\u1ea5p (0). \u0110\u00f4i khi, c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng x\u00e1c \u0111\u1ecbnh ho\u1eb7c tr\u1ea1ng th\u00e1i tr\u1edf kh\u00e1ng cao c\u0169ng \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb.<\/li>\n
  • Chuy\u1ec3n ti\u1ebfp:<\/strong>C\u00e1c \u0111\u01b0\u1eddng th\u1eb3ng \u0111\u1ee9ng cho bi\u1ebft th\u1eddi \u0111i\u1ec3m t\u00edn hi\u1ec7u chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c c\u1ea1nh t\u0103ng ho\u1eb7c gi\u1ea3m.<\/li>\n
  • Ghi ch\u00fa:<\/strong>C\u00e1c nh\u00e3n v\u0103n b\u1ea3n th\u01b0\u1eddng x\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c c\u1ee5 th\u1ec3, \u0111\u1ed9 tr\u1ec5 ho\u1eb7c c\u00e1c kh\u1ed1i ch\u1ee9c n\u0103ng b\u00ean trong s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n

    Kh\u00f4ng c\u00f3 s\u1ef1 hi\u1ec3u r\u00f5 r\u00f5 r\u00e0ng v\u1ec1 nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n n\u00e0y, vi\u1ec7c di\u1ec5n gi\u1ea3i c\u00e1c t\u01b0\u01a1ng t\u00e1c ph\u1ee9c t\u1ea1p s\u1ebd tr\u1edf n\u00ean kh\u00f3 kh\u0103n. M\u1ed9t s\u01a1 \u0111\u1ed3 th\u1eddi gian kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t b\u1ea3n v\u1ebd; n\u00f3 l\u00e0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng gi\u1eefa thi\u1ebft b\u1ecb ph\u00e1t v\u00e0 thi\u1ebft b\u1ecb nh\u1eadn. N\u00f3 quy \u0111\u1ecbnh c\u00e1c quy t\u1eafc m\u00e0 d\u1eef li\u1ec7u ph\u1ea3i tu\u00e2n theo \u0111\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u00fang c\u00e1ch.<\/p>\n

    Chi\u1ebfn l\u01b0\u1ee3c Theo M\u00f4-\u0111un Cho C\u00e1c Thi\u1ebft K\u1ebf Ph\u1ee9c T\u1ea1p \ud83e\udde9<\/h2>\n

    C\u00e1c h\u1ec7 th\u1ed1ng k\u1ef9 thu\u1eadt s\u1ed1 hi\u1ec7n \u0111\u1ea1i hi\u1ebfm khi \u0111\u01a1n gi\u1ea3n. Ch\u00fang bao g\u1ed3m nhi\u1ec1u h\u1ec7 th\u1ed1ng con, m\u1ed7i h\u1ec7 th\u1ed1ng c\u00f3 y\u00eau c\u1ea7u th\u1eddi gian ri\u00eang. Vi\u1ec7c c\u1ed1 g\u1eafng v\u1ebd to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng trong m\u1ed9t s\u01a1 \u0111\u1ed3 th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn s\u1ef1 l\u1ed9n x\u1ed9n v\u00e0 nh\u1ea7m l\u1eabn. M\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn theo m\u00f4-\u0111un chia nh\u1ecf thi\u1ebft k\u1ebf th\u00e0nh c\u00e1c ph\u1ea7n d\u1ec5 qu\u1ea3n l\u00fd. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y n\u00e2ng cao t\u00ednh d\u1ec5 \u0111\u1ecdc v\u00e0 \u0111\u01a1n gi\u1ea3n h\u00f3a qu\u00e1 tr\u00ecnh g\u1ee1 l\u1ed7i.<\/p>\n

    T\u1ea1i Sao T\u00ednh Theo M\u00f4-\u0111un L\u1ea1i Quan Tr\u1ecdng<\/h3>\n

    Vi\u1ec7c chia m\u1ed9t h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c m\u00f4-\u0111un gi\u00fap c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf t\u1eadp trung v\u00e0o c\u00e1c giao di\u1ec7n c\u1ee5 th\u1ec3 m\u00e0 kh\u00f4ng b\u1ecb l\u1ea1c trong ti\u1ebfng \u1ed3n c\u1ee7a to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac. Khi x\u1ea3y ra vi ph\u1ea1m th\u1eddi gian, s\u01a1 \u0111\u1ed3 theo m\u00f4-\u0111un gi\u00fap d\u1ec5 d\u00e0ng x\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c c\u1ee7a v\u1ea5n \u0111\u1ec1. N\u00f3 gi\u1ea3m t\u1ea3i nh\u1eadn th\u1ee9c v\u00e0 th\u00fac \u0111\u1ea9y s\u1ef1 h\u1ee3p t\u00e1c gi\u1eefa c\u00e1c nh\u00f3m k\u1ef9 s\u01b0 kh\u00e1c nhau \u0111ang l\u00e0m vi\u1ec7c tr\u00ean c\u00e1c kh\u1ed1i ri\u00eang bi\u1ec7t.<\/p>\n

    L\u1ee3i \u00edch c\u1ee7a c\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y bao g\u1ed3m:<\/p>\n

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    • C\u00f4 l\u1eadp c\u00e1c v\u1ea5n \u0111\u1ec1:<\/strong>C\u00e1c v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong m\u1ed9t kh\u1ed1i c\u1ee5 th\u1ec3 thay v\u00ec to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng.<\/li>\n
    • Kh\u1ea3 n\u0103ng t\u00e1i s\u1eed d\u1ee5ng:<\/strong>C\u00e1c m\u1eabu th\u1eddi gian chu\u1ea9n h\u00f3a cho c\u00e1c m\u00f4-\u0111un th\u00f4ng d\u1ee5ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i s\u1eed d\u1ee5ng trong c\u00e1c d\u1ef1 \u00e1n kh\u00e1c nhau.<\/li>\n
    • Kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/strong>C\u00e1c t\u00ednh n\u0103ng m\u1edbi c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o d\u01b0\u1edbi d\u1ea1ng c\u00e1c m\u00f4-\u0111un m\u1edbi m\u00e0 kh\u00f4ng c\u1ea7n v\u1ebd l\u1ea1i to\u00e0n b\u1ed9 s\u01a1 \u0111\u1ed3.<\/li>\n
    • Hi\u1ec7u su\u1ea5t c\u1ee7a nh\u00f3m:<\/strong>C\u00e1c nh\u00f3m kh\u00e1c nhau c\u00f3 th\u1ec3 l\u00e0m vi\u1ec7c tr\u00ean s\u01a1 \u0111\u1ed3 th\u1eddi gian t\u01b0\u01a1ng \u1ee9ng c\u1ee7a h\u1ecd \u0111\u1ed3ng th\u1eddi.<\/li>\n<\/ul>\n

      X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi m\u00f4-\u0111un<\/h3>\n

      \u0110\u1ec3 th\u1ef1c hi\u1ec7n chi\u1ebfn l\u01b0\u1ee3c n\u00e0y m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3, c\u00e1c ranh gi\u1edbi r\u00f5 r\u00e0ng ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp. M\u1ed7i m\u00f4-\u0111un n\u00ean c\u00f3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng. S\u01a1 \u0111\u1ed3 th\u1eddi gian cho m\u1ed9t m\u00f4-\u0111un \u0111\u01a1n l\u1ebb n\u00ean t\u1eadp trung v\u00e0o c\u00e1c t\u00edn hi\u1ec7u \u0111i qua ranh gi\u1edbi \u0111\u00f3. C\u00e1c chi ti\u1ebft b\u00ean trong c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c tr\u1eebu t\u01b0\u1ee3ng h\u00f3a tr\u1eeb khi ch\u00fang \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn th\u1eddi gian giao di\u1ec7n.<\/p>\n\n\n\n\n\n\n\n
      M\u1ee9c \u0111\u1ed9 m\u00f4-\u0111un<\/th>\nV\u00f9ng t\u1eadp trung<\/th>\n\u0110\u1ed9 chi ti\u1ebft<\/th>\n<\/tr>\n<\/thead>\n
      M\u1ee9c \u0111\u1ed9 h\u1ec7 th\u1ed1ng<\/td>\nGiao ti\u1ebfp gi\u1eefa c\u00e1c m\u00f4-\u0111un<\/td>\nC\u00e1c giao ti\u1ebfp c\u1ea5p cao<\/td>\n<\/tr>\n
      M\u1ee9c \u0111\u1ed9 kh\u1ed1i<\/td>\nC\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u b\u00ean trong<\/td>\nC\u00e1c ph\u1ee5 thu\u1ed9c t\u00edn hi\u1ec7u c\u1ee5 th\u1ec3<\/td>\n<\/tr>\n
      M\u1ee9c \u0111\u1ed9 c\u1ed5ng<\/td>\nTh\u1eddi gian tr\u1ec5 lan truy\u1ec1n<\/td>\nTh\u1eddi gian ch\u00ednh x\u00e1c \u0111\u1ebfn t\u1eebng nanosecond<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      B\u1eb1ng c\u00e1ch s\u1eafp x\u1ebfp c\u00e1c s\u01a1 \u0111\u1ed3 theo c\u00e1c m\u1ee9c \u0111\u1ed9 n\u00e0y, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 duy tr\u00ec m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p r\u00f5 r\u00e0ng v\u1ec1 th\u00f4ng tin. C\u1ea5u tr\u00fac n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ee9c \u0111\u1ed9 chi ti\u1ebft ph\u00f9 h\u1ee3p s\u1ebd c\u00f3 s\u1eb5n cho t\u1eebng giai \u0111o\u1ea1n ph\u00f9 h\u1ee3p trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf.<\/p>\n

      Gi\u1ea3i m\u00e3 tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp t\u00edn hi\u1ec7u \ud83d\udcca<\/h2>\n

      M\u1ed9t khi c\u1ea5u tr\u00fac m\u00f4-\u0111un \u0111\u00e3 \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 ph\u00e2n t\u00edch c\u00e1c t\u00edn hi\u1ec7u c\u1ee5 th\u1ec3. Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c t\u00edn hi\u1ec7u \u0111\u1ec1u ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nhau. M\u1ed9t s\u1ed1 l\u00e0 li\u00ean t\u1ee5c, trong khi nh\u1eefng t\u00edn hi\u1ec7u kh\u00e1c \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u1ea1nh. Hi\u1ec3u r\u00f5 b\u1ea3n ch\u1ea5t c\u1ee7a t\u1eebng t\u00edn hi\u1ec7u l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 ch\u00ednh x\u00e1c.<\/p>\n

      C\u00e1c lo\u1ea1i t\u00edn hi\u1ec7u ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n

        \n
      • T\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3:<\/strong> L\u00e0 nh\u1ecbp \u0111\u1eadp c\u1ee7a h\u1ec7 th\u1ed1ng. Nh\u1eefng t\u00edn hi\u1ec7u n\u00e0y c\u00f3 t\u00ednh chu k\u1ef3 v\u00e0 \u0111i\u1ec1u khi\u1ec3n s\u1ef1 thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i. Ch\u00fang th\u01b0\u1eddng c\u00f3 y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t v\u1ec1 t\u1ea7n s\u1ed1 v\u00e0 chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng.<\/li>\n
      • T\u00edn hi\u1ec7u d\u1eef li\u1ec7u:<\/strong> L\u00e0 th\u00f4ng tin th\u1ef1c s\u1ef1 \u0111ang \u0111\u01b0\u1ee3c truy\u1ec1n \u0111i. Ch\u00fang ph\u1ea3i \u1ed5n \u0111\u1ecbnh trong c\u00e1c kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3 so v\u1edbi \u0111\u1ed3ng h\u1ed3.<\/li>\n
      • T\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n:<\/strong> C\u00e1c t\u00edn hi\u1ec7u k\u00edch ho\u1ea1t ho\u1eb7c v\u00f4 hi\u1ec7u h\u00f3a ch\u1ee9c n\u0103ng, ch\u1eb3ng h\u1ea1n nh\u01b0 Chip Select ho\u1eb7c Enable.<\/li>\n
      • T\u00edn hi\u1ec7u kh\u1edfi \u0111\u1ed9ng l\u1ea1i:<\/strong> C\u00e1c t\u00edn hi\u1ec7u kh\u1edfi t\u1ea1o bu\u1ed9c h\u1ec7 th\u1ed1ng v\u00e0o m\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u00e3 bi\u1ebft.<\/li>\n<\/ul>\n

        C\u00e1c chuy\u1ec3n ti\u1ebfp tr\u00ean c\u00e1c \u0111\u01b0\u1eddng n\u00e0y l\u00e0 r\u1ea5t quan tr\u1ecdng. M\u1ed9t c\u1ea1nh l\u00ean th\u01b0\u1eddng k\u00edch ho\u1ea1t m\u1ed9t h\u00e0nh \u0111\u1ed9ng, trong khi c\u1ea1nh xu\u1ed1ng c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh n\u00f3. Trong c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea5t \u0111\u1ed3ng b\u1ed9, m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c c\u1ea1nh n\u00e0y \u00edt d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c h\u01a1n, \u0111\u00f2i h\u1ecfi ph\u00e2n t\u00edch chi ti\u1ebft h\u01a1n.<\/p>\n

        Tr\u1ef1c quan h\u00f3a th\u1eddi gian tr\u1ec5 lan truy\u1ec1n<\/h3>\n

        Kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u n\u00e0o thay \u0111\u1ed5i ngay l\u1eadp t\u1ee9c. Nh\u1eefng gi\u1edbi h\u1ea1n v\u1eadt l\u00fd g\u00e2y ra th\u1eddi gian tr\u1ec5 lan truy\u1ec1n. Khi m\u1ed9t t\u00edn hi\u1ec7u r\u1eddi kh\u1ecfi m\u1ed9t th\u00e0nh ph\u1ea7n, n\u00f3 m\u1ea5t th\u1eddi gian \u0111\u1ec3 \u0111i qua d\u00e2y d\u1eabn v\u00e0 \u0111\u1ebfn th\u00e0nh ph\u1ea7n ti\u1ebfp theo. C\u00e1c s\u01a1 \u0111\u1ed3 th\u1eddi gian ph\u1ea3i t\u00ednh \u0111\u1ebfn \u0111\u1ed9 tr\u1ec5 n\u00e0y. N\u1ebfu m\u1ed9t s\u01a1 \u0111\u1ed3 cho th\u1ea5y t\u00edn hi\u1ec7u thay \u0111\u1ed5i t\u1ea1i th\u1eddi \u0111i\u1ec3m T, \u0111\u1ea7u nh\u1eadn c\u00f3 th\u1ec3 kh\u00f4ng th\u1ea5y n\u00f3 cho \u0111\u1ebfn th\u1eddi \u0111i\u1ec3m T + \u0394t.<\/p>\n

        B\u1ecf qua th\u1eddi gian tr\u1ec5 lan truy\u1ec1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nh\u1eefng sai s\u00f3t nghi\u00eam tr\u1ecdng trong m\u00f4 ph\u1ecfng v\u00e0 tri\u1ec3n khai. C\u00e1c k\u1ef9 s\u01b0 ph\u1ea3i m\u00f4 h\u00ecnh h\u00f3a nh\u1eefng \u0111\u1ed9 tr\u1ec5 n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng th\u1eddi gian thi\u1ebft l\u1eadp v\u00e0 th\u1eddi gian gi\u1eef \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng tr\u00ean to\u00e0n b\u1ed9 h\u00e0nh tr\u00ecnh.<\/p>\n

        C\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian quan tr\u1ecdng \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch \u26a0\ufe0f<\/h2>\n

        Nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t d\u1eabn \u0111\u1ebfn l\u1ed7i trong thi\u1ebft k\u1ebf s\u1ed1 l\u00e0 vi ph\u1ea1m th\u1eddi gian. Nh\u1eefng vi ph\u1ea1m n\u00e0y x\u1ea3y ra khi t\u00edn hi\u1ec7u kh\u00f4ng \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c kho\u1ea3ng th\u1eddi gian \u1ed5n \u0111\u1ecbnh y\u00eau c\u1ea7u. Hai r\u00e0ng bu\u1ed9c ch\u00ednh \u0111i\u1ec1u khi\u1ec3n h\u00e0nh vi n\u00e0y l\u00e0 th\u1eddi gian thi\u1ebft l\u1eadp v\u00e0 th\u1eddi gian gi\u1eef.<\/p>\n

        Th\u1eddi gian thi\u1ebft l\u1eadp<\/h3>\n

        Th\u1eddi gian thi\u1ebft l\u1eadp l\u00e0 kho\u1ea3ng th\u1eddi gian t\u1ed1i thi\u1ec3u m\u00e0 d\u1eef li\u1ec7u ph\u1ea3i \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc c\u1ea1nh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3. N\u1ebfu d\u1eef li\u1ec7u \u0111\u1ebfn qu\u00e1 mu\u1ed9n, flip-flop c\u00f3 th\u1ec3 kh\u00f4ng ghi nh\u1eadn \u0111\u01b0\u1ee3c gi\u00e1 tr\u1ecb \u0111\u00fang. R\u00e0ng bu\u1ed9c n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh t\u1ea7n s\u1ed1 ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a c\u1ee7a h\u1ec7 th\u1ed1ng. N\u1ebfu chu k\u1ef3 \u0111\u1ed3ng h\u1ed3 ng\u1eafn h\u01a1n t\u1ed5ng th\u1eddi gian lan truy\u1ec1n c\u1ed9ng v\u1edbi th\u1eddi gian thi\u1ebft l\u1eadp, h\u1ec7 th\u1ed1ng s\u1ebd th\u1ea5t b\u1ea1i.<\/p>\n

        C\u00e1c y\u1ebfu t\u1ed1 quan tr\u1ecdng c\u1ea7n xem x\u00e9t \u0111\u1ed1i v\u1edbi th\u1eddi gian thi\u1ebft l\u1eadp bao g\u1ed3m:<\/p>\n

          \n
        • Ph\u00e2n t\u00edch \u0111\u01b0\u1eddng \u0111i d\u00e0i nh\u1ea5t l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u00ecm ra t\u00ecnh hu\u1ed1ng x\u1ea5u nh\u1ea5t.<\/li>\n
        • S\u1ef1 thay \u0111\u1ed5i v\u1ec1 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, \u0111i\u1ec7n \u00e1p v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 tr\u1ec5.<\/li>\n
        • S\u1ef1 dao \u0111\u1ed9ng \u0111\u1ed3ng h\u1ed3 (jitter) c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m kho\u1ea3ng th\u1eddi gian thi\u1ebft l\u1eadp c\u00f2n l\u1ea1i.<\/li>\n<\/ul>\n

          Th\u1eddi gian gi\u1eef<\/h3>\n

          Th\u1eddi gian gi\u1eef l\u00e0 kho\u1ea3ng th\u1eddi gian t\u1ed1i thi\u1ec3u m\u00e0 d\u1eef li\u1ec7u ph\u1ea3i duy tr\u00ec \u1ed5n \u0111\u1ecbnh sau c\u1ea1nh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3. N\u1ebfu d\u1eef li\u1ec7u thay \u0111\u1ed5i qu\u00e1 s\u1edbm, flip-flop c\u00f3 th\u1ec3 ghi nh\u1eadn sai gi\u00e1 tr\u1ecb ho\u1eb7c r\u01a1i v\u00e0o tr\u1ea1ng th\u00e1i b\u1ea5t \u1ed5n. Kh\u00e1c v\u1edbi th\u1eddi gian thi\u1ebft l\u1eadp, th\u1eddi gian gi\u1eef \u0111\u1ed9c l\u1eadp v\u1edbi t\u1ea7n s\u1ed1 \u0111\u1ed3ng h\u1ed3. N\u00f3 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 tr\u1ec5 n\u1ed9i b\u1ed9 c\u1ee7a th\u00e0nh ph\u1ea7n v\u00e0 \u0111\u01b0\u1eddng \u0111i b\u00ean ngo\u00e0i.<\/p>\n

          Vi ph\u1ea1m th\u1eddi gian gi\u1eef th\u01b0\u1eddng kh\u00f3 kh\u1eafc ph\u1ee5c h\u01a1n v\u00ec kh\u00f4ng th\u1ec3 gi\u1ea3i quy\u1ebft b\u1eb1ng c\u00e1ch l\u00e0m ch\u1eadm \u0111\u1ed3ng h\u1ed3. Thay v\u00e0o \u0111\u00f3, c\u1ea7n th\u00eam \u0111\u1ed9 tr\u1ec5 v\u00e0o \u0111\u01b0\u1eddng \u0111i d\u1eef li\u1ec7u ho\u1eb7c thi\u1ebft k\u1ebf l\u1ea1i logic.<\/p>\n

          T\u00f3m t\u1eaft c\u00e1c r\u00e0ng bu\u1ed9c th\u1eddi gian<\/h3>\n\n\n\n\n\n\n\n
          R\u00e0ng bu\u1ed9c<\/th>\n\u0110\u1ecbnh ngh\u0129a<\/th>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea7n s\u1ed1<\/th>\nPh\u01b0\u01a1ng ph\u00e1p gi\u1ea3i quy\u1ebft<\/th>\n<\/tr>\n<\/thead>\n
          Th\u1eddi gian thi\u1ebft l\u1eadp<\/td>\n\u1ed4n \u0111\u1ecbnh tr\u01b0\u1edbc c\u1ea1nh \u0111\u1ed3ng h\u1ed3<\/td>\nGi\u1edbi h\u1ea1n t\u1ea7n s\u1ed1 t\u1ed1i \u0111a<\/td>\nT\u1ed1i \u01b0u h\u00f3a \u0111\u01b0\u1eddng \u0111i logic<\/td>\n<\/tr>\n
          Th\u1eddi gian gi\u1eef<\/td>\n\u1ed4n \u0111\u1ecbnh sau c\u1ea1nh \u0111\u1ed3ng h\u1ed3<\/td>\n\u0110\u1ed9c l\u1eadp v\u1edbi t\u1ea7n s\u1ed1<\/td>\nTh\u00eam \u0111\u1ed9 tr\u1ec5 b\u1ed9 \u0111\u1ec7m<\/td>\n<\/tr>\n
          \u0110\u1ed9 tr\u1ec5 lan truy\u1ec1n<\/td>\nTh\u1eddi gian \u0111\u1ec3 \u0111i qua logic<\/td>\n\u1ea2nh h\u01b0\u1edfng \u0111\u1ebfn c\u1ea3 hai<\/td>\nT\u1ed1i \u01b0u h\u00f3a m\u1ea1ch<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 vi ph\u1ea1m \ud83d\udeab<\/h2>\n

          Ngay c\u1ea3 v\u1edbi ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf theo m\u00f4-\u0111un, l\u1ed7i v\u1eabn c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n. Nh\u1eadn di\u1ec7n c\u00e1c sai l\u1ea7m ph\u1ed5 bi\u1ebfn s\u1ebd gi\u00fap ng\u0103n ng\u1eeba ch\u00fang trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf. M\u1ed9t s\u1ed1 lo\u1ea1i vi ph\u1ea1m th\u01b0\u1eddng xuy\u00ean g\u1eb7p ph\u1ea3i trong qu\u00e1 tr\u00ecnh ki\u1ec3m ch\u1ee9ng ph\u1ea7n c\u1ee9ng.<\/p>\n

            \n
          • T\u00ecnh tr\u1ea1ng b\u1ea5t \u1ed5n:<\/strong>X\u1ea3y ra khi m\u1ed9t t\u00edn hi\u1ec7u thay \u0111\u1ed5i ch\u00ednh x\u00e1c t\u1ea1i c\u1ea1nh \u0111\u1ed3ng h\u1ed3. \u0110\u1ea7u ra c\u1ee7a flip-flop tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra khi chuy\u1ec3n qua c\u00e1c mi\u1ec1n \u0111\u1ed3ng h\u1ed3.<\/li>\n
          • S\u1ef1 nh\u1ea3y v\u1ecdt:<\/strong>Nh\u1eefng xung ng\u1eafn, kh\u00f4ng mong mu\u1ed1n do s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111\u01b0\u1eddng \u0111i logic. Nh\u1eefng s\u1ef1 ki\u1ec7n n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i sai.<\/li>\n
          • S\u1ef1 l\u1ec7ch \u0111\u1ed3ng h\u1ed3:<\/strong>Khi t\u00edn hi\u1ec7u \u0111\u1ed3ng h\u1ed3 \u0111\u1ebfn c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c nhau v\u00e0o c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c nhau. \u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m kho\u1ea3ng th\u1eddi gian hi\u1ec7u d\u1ee5ng v\u1ec1 m\u1eb7t th\u1eddi gian.<\/li>\n
          • \u0110i\u1ec1u ki\u1ec7n c\u1ea1nh tranh:<\/strong>Khi k\u1ebft qu\u1ea3 ph\u1ee5 thu\u1ed9c v\u00e0o th\u1ee9 t\u1ef1 c\u00e1c s\u1ef1 ki\u1ec7n, \u0111i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c trong c\u00e1c thi\u1ebft k\u1ebf b\u1ea5t \u0111\u1ed3ng b\u1ed9.<\/li>\n<\/ul>\n

            Gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 n\u00e0y \u0111\u00f2i h\u1ecfi ph\u00e2n t\u00edch c\u1ea9n th\u1eadn s\u01a1 \u0111\u1ed3 th\u1eddi gian. H\u00e3y t\u00ecm c\u00e1c kho\u1ea3ng th\u1eddi gian ch\u1ed3ng l\u1ea5n n\u01a1i t\u00ednh \u1ed5n \u0111\u1ecbnh kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o. \u0110\u1ea3m b\u1ea3o c\u00e1c tr\u00ecnh t\u1ef1 kh\u1edfi \u0111\u1ed9ng l\u1ea1i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang \u0111\u1ec3 tr\u00e1nh c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng x\u00e1c \u0111\u1ecbnh.<\/p>\n

            Th\u1ef1c hi\u1ec7n quy tr\u00ecnh l\u00e0m vi\u1ec7c theo m\u00f4-\u0111un \ud83d\udee0\ufe0f<\/h2>\n

            \u0110\u1ec3 \u00e1p d\u1ee5ng hi\u1ec7u qu\u1ea3 ph\u01b0\u01a1ng ph\u00e1p n\u00e0y, h\u00e3y tu\u00e2n theo m\u1ed9t quy tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ecdi kh\u00eda c\u1ea1nh v\u1ec1 th\u1eddi gian \u0111\u1ec1u \u0111\u01b0\u1ee3c x\u1eed l\u00fd m\u00e0 kh\u00f4ng b\u1ecb tr\u00f9ng l\u1eb7p.<\/p>\n

              \n
            1. X\u00e1c \u0111\u1ecbnh giao di\u1ec7n:<\/strong>Li\u1ec7t k\u00ea r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra cho t\u1eebng m\u00f4-\u0111un.<\/li>\n
            2. X\u00e1c \u0111\u1ecbnh c\u00e1c mi\u1ec1n \u0111\u1ed3ng h\u1ed3:<\/strong>X\u00e1c \u0111\u1ecbnh t\u00edn hi\u1ec7u n\u00e0o thu\u1ed9c v\u1ec1 mi\u1ec1n \u0111\u1ed3ng h\u1ed3 n\u00e0o.<\/li>\n
            3. B\u1ea3n \u0111\u1ed3 h\u00f3a c\u00e1c \u0111\u01b0\u1eddng truy\u1ec1n d\u1eef li\u1ec7u:<\/strong>Theo d\u00f5i \u0111\u01b0\u1eddng \u0111i t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch.<\/li>\n
            4. \u00c1p d\u1ee5ng c\u00e1c r\u00e0ng bu\u1ed9c:<\/strong>\u0110\u1eb7t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft l\u1eadp v\u00e0 gi\u1eef cho t\u1eebng flip-flop.<\/li>\n
            5. X\u00e1c minh c\u00e1c chuy\u1ec3n tr\u1ea1ng th\u00e1i:<\/strong>Ki\u1ec3m tra s\u1ef1 \u0111\u1ed3ng b\u1ed9 c\u1ee7a c\u00e1c c\u1ea1nh v\u00e0 \u0111\u1ed9 r\u1ed9ng xung.<\/li>\n
            6. Xem x\u00e9t t\u00edch h\u1ee3p:<\/strong>\u0110\u1ea3m b\u1ea3o c\u00e1c s\u01a1 \u0111\u1ed3 m\u00f4-\u0111un ph\u00f9 h\u1ee3p khi \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p l\u1ea1i.<\/li>\n<\/ol>\n

              M\u1ed7i b\u01b0\u1edbc \u0111\u1ec1u d\u1ef1a tr\u00ean b\u01b0\u1edbc tr\u01b0\u1edbc \u0111\u00f3. B\u1ecf qua m\u1ed9t b\u01b0\u1edbc c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn kho\u1ea3ng tr\u1ed1ng trong ph\u1ea1m vi ki\u1ec3m tra. V\u00ed d\u1ee5, b\u1ecf qua c\u00e1c mi\u1ec1n \u0111\u1ed3ng h\u1ed3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i \u0111\u1ed3ng b\u1ed9 h\u00f3a, r\u1ea5t kh\u00f3 g\u1ee1 l\u1ed7i v\u1ec1 sau.<\/p>\n

              X\u1eed l\u00fd c\u00e1c mi\u1ec1n \u0111\u1ed3ng h\u1ed3 \u0111a t\u1ea7ng \ud83c\udf10<\/h2>\n

              Khi thi\u1ebft k\u1ebf ph\u00e1t tri\u1ec3n, c\u00e1c t\u1ea7n s\u1ed1 \u0111\u1ed3ng h\u1ed3 \u0111a t\u1ea7ng tr\u1edf n\u00ean c\u1ea7n thi\u1ebft. M\u1ed9t s\u1ed1 ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng ch\u1ea1y nhanh, trong khi c\u00e1c ph\u1ea7n kh\u00e1c ch\u1ea1y ch\u1eadm. \u0110\u1ed3ng b\u1ed9 h\u00f3a c\u00e1c mi\u1ec1n n\u00e0y l\u00e0 m\u1ed9t trong nh\u1eefng kh\u00eda c\u1ea1nh th\u00e1ch th\u1ee9c nh\u1ea5t c\u1ee7a ph\u00e2n t\u00edch th\u1eddi gian.<\/p>\n

              Khi t\u00edn hi\u1ec7u chuy\u1ec3n t\u1eeb mi\u1ec1n \u0111\u1ed3ng h\u1ed3 n\u00e0y sang mi\u1ec1n \u0111\u1ed3ng h\u1ed3 kh\u00e1c, s\u01a1 \u0111\u1ed3 th\u1eddi gian ph\u1ea3i ph\u1ea3n \u00e1nh m\u1ed1i quan h\u1ec7 gi\u1eefa hai \u0111\u1ed3ng h\u1ed3. N\u1ebfu c\u00e1c \u0111\u1ed3ng h\u1ed3 b\u1ea5t \u0111\u1ed3ng b\u1ed9, c\u1ea7n \u0111\u1eb7c bi\u1ec7t c\u1ea9n tr\u1ecdng \u0111\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng b\u1ea5t \u1ed5n. C\u00e1c k\u1ef9 thu\u1eadt nh\u01b0 chu\u1ed7i \u0111\u1ed3ng b\u1ed9 h\u00f3a ho\u1eb7c giao th\u1ee9c trao \u0111\u1ed5i t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd vi\u1ec7c chuy\u1ec3n ti\u1ebfp n\u00e0y m\u1ed9t c\u00e1ch an to\u00e0n.<\/p>\n

              C\u00e1c chi\u1ebfn l\u01b0\u1ee3c ch\u00ednh cho thi\u1ebft k\u1ebf \u0111a \u0111\u1ed3ng h\u1ed3 bao g\u1ed3m:<\/p>\n

                \n
              • M\u00e3 h\u00f3a Gray:<\/strong>S\u1eed d\u1ee5ng m\u00e3 Gray \u0111\u1ec3 truy\u1ec1n an to\u00e0n c\u00e1c b\u1ed9 \u0111\u1ebfm \u0111a bit qua c\u00e1c mi\u1ec1n.<\/li>\n
              • B\u1ed9 \u0111\u1ec7m FIFO:<\/strong>S\u1eed d\u1ee5ng h\u00e0ng \u0111\u1ee3i First-In-First-Out \u0111\u1ec3 t\u00e1ch bi\u1ec7t c\u00e1c \u0111\u1ed3ng h\u1ed3 \u0111\u1ecdc v\u00e0 ghi.<\/li>\n
              • T\u00edn hi\u1ec7u trao \u0111\u1ed5i:<\/strong>S\u1eed d\u1ee5ng c\u1eb7p y\u00eau c\u1ea7u\/ho\u00e0n t\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh h\u1ee3p l\u1ec7 c\u1ee7a d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

                Bi\u1ec3u \u0111\u1ed3 th\u1eddi gian cho c\u00e1c t\u00ecnh hu\u1ed1ng n\u00e0y ph\u1ea3i hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng c\u00e1c c\u1ea1nh \u0111\u1ed3ng h\u1ed3 c\u1ee7a c\u1ea3 hai mi\u1ec1n. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 x\u00e1c \u0111\u1ecbnh xem d\u1eef li\u1ec7u c\u00f3 duy tr\u00ec \u1ed5n \u0111\u1ecbnh \u0111\u1ee7 l\u00e2u \u0111\u1ec3 \u0111\u1ed3ng h\u1ed3 nh\u1eadn c\u00f3 th\u1ec3 b\u1eaft \u0111\u01b0\u1ee3c n\u00f3 hay kh\u00f4ng.<\/p>\n

                G\u1ee1 l\u1ed7i b\u1eb1ng d\u1eef li\u1ec7u tr\u1ef1c quan \ud83d\udd0d<\/h2>\n

                Khi m\u1ed9t thi\u1ebft k\u1ebf th\u1ea5t b\u1ea1i, bi\u1ec3u \u0111\u1ed3 th\u1eddi gian l\u00e0 n\u01a1i \u0111\u1ea7u ti\u00ean c\u1ea7n ki\u1ec3m tra. G\u1ee1 l\u1ed7i \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u00ean nh\u1eabn v\u00e0 ph\u01b0\u01a1ng ph\u00e1p h\u1ec7 th\u1ed1ng. B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1ch t\u00e1ch bi\u1ec7t module \u0111ang l\u1ed7i. So s\u00e1nh bi\u1ec3u \u0111\u1ed3 mong \u0111\u1ee3i v\u1edbi d\u1ea1ng s\u00f3ng th\u1ef1c t\u1ebf.<\/p>\n

                T\u00ecm ki\u1ebfm s\u1ef1 kh\u00e1c bi\u1ec7t \u1edf:<\/p>\n

                  \n
                • Th\u1eddi gian t\u00edn hi\u1ec7u so v\u1edbi \u0111\u1ed3ng h\u1ed3.<\/li>\n
                • Chi\u1ec1u r\u1ed9ng xung c\u1ee7a c\u00e1c t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n.<\/li>\n
                • Chuy\u1ec3n tr\u1ea1ng th\u00e1i trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng l\u1ea1i.<\/li>\n
                • S\u1ef1 c\u1ed1 ch\u1eadp ch\u1eddn tr\u00ean c\u00e1c \u0111\u01b0\u1eddng d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n

                  C\u00e1c c\u00f4ng c\u1ee5 th\u01b0\u1eddng cung c\u1ea5p kh\u1ea3 n\u0103ng ph\u00f3ng to \u0111\u1ec3 ki\u1ec3m tra chi ti\u1ebft \u1edf c\u1ea5p \u0111\u1ed9 nanosecond. S\u1eed d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng n\u00e0y \u0111\u1ec3 x\u00e1c minh ch\u00ednh x\u00e1c th\u1eddi \u0111i\u1ec3m x\u1ea3y ra vi ph\u1ea1m. Li\u00ean k\u1ebft d\u1eef li\u1ec7u tr\u1ef1c quan v\u1edbi logic \u0111\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5.<\/p>\n

                  Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n thi\u1ebft k\u1ebf \ud83d\udca1<\/h2>\n

                  Bi\u1ec3u \u0111\u1ed3 th\u1eddi gian kh\u00f4ng ch\u1ec9 l\u00e0 b\u1ea3n v\u1ebd k\u1ef9 thu\u1eadt; ch\u00fang l\u00e0 b\u1ea3n thi\u1ebft k\u1ebf cho c\u00e1c h\u1ec7 th\u1ed1ng s\u1ed1 tin c\u1eady. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p theo m\u00f4-\u0111un, c\u00e1c k\u1ef9 s\u01b0 c\u00f3 th\u1ec3 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p v\u00e0 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y h\u1ed7 tr\u1ee3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng v\u00e0 gi\u1ea3m thi\u1ec3u nguy c\u01a1 sai s\u00f3t t\u1ed1n k\u00e9m.<\/p>\n

                  Th\u00e0nh c\u00f4ng trong thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 ch\u00fa \u00fd \u0111\u1ebfn chi ti\u1ebft. M\u1ed7i nanosecond \u0111\u1ec1u quan tr\u1ecdng. M\u1ed7i chuy\u1ec3n tr\u1ea1ng th\u00e1i \u0111\u1ec1u c\u00f3 \u00fd ngh\u0129a. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng nghi\u00eam ng\u1eb7t c\u00e1c nguy\u00ean t\u1eafc n\u00e0y, c\u00e1c \u0111\u1ed9i ng\u0169 c\u00f3 th\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf. Vi\u1ec7c ph\u00e2n t\u00edch theo m\u00f4-\u0111un \u0111\u1ea3m b\u1ea3o kh\u00f4ng chi ti\u1ebft n\u00e0o b\u1ecb b\u1ecf s\u00f3t, d\u1eabn \u0111\u1ebfn c\u00e1c gi\u1ea3i ph\u00e1p ph\u1ea7n c\u1ee9ng v\u1eefng ch\u1eafc v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n

                  Vi\u1ec7c c\u1ea3i ti\u1ebfn li\u00ean t\u1ee5c c\u00e1c k\u1ef9 n\u0103ng n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft khi c\u00f4ng ngh\u1ec7 ph\u00e1t tri\u1ec3n. C\u00e1c ti\u00eau chu\u1ea9n m\u1edbi v\u00e0 t\u1ed1c \u0111\u1ed9 nhanh h\u01a1n \u0111\u00f2i h\u1ecfi c\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch c\u1eadp nh\u1eadt. H\u00e3y c\u1eadp nh\u1eadt th\u00f4ng tin v\u1ec1 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t \u0111ang n\u1ed5i l\u00ean \u0111\u1ec3 duy tr\u00ec l\u1ee3i th\u1ebf c\u1ea1nh tranh trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt s\u1ed1.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  Trong b\u1ed1i c\u1ea3nh ph\u1ee9c t\u1ea1p c\u1ee7a thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng k\u1ef9 thu\u1eadt s\u1ed1, s\u1ef1 r\u00f5 r\u00e0ng l\u00e0 \u0111i\u1ec1u t\u1ed1i quan tr\u1ecdng. C\u00e1c k\u1ef9 s\u01b0 v\u00e0 nh\u00e0 thi\u1ebft k\u1ebf ph\u1ee5 thu\u1ed9c…<\/p>\n","protected":false},"author":1,"featured_media":1768,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Bi\u1ec3u \u0111\u1ed3 th\u1eddi gian: H\u01b0\u1edbng d\u1eabn ph\u01b0\u01a1ng ph\u00e1p theo m\u00f4-\u0111un \u26a1","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1ch ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3 th\u1eddi gian ph\u1ee9c t\u1ea1p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p theo m\u00f4-\u0111un. Bao g\u1ed3m th\u1eddi gian thi\u1ebft l\u1eadp\/th\u1eddi gian gi\u1eef, c\u00e1c mi\u1ec1n \u0111\u1ed3ng h\u1ed3 v\u00e0 \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u cho thi\u1ebft k\u1ebf ph\u1ea7n c\u1ee9ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[60],"tags":[87,92],"class_list":["post-1767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-academic","tag-timing-diagram"],"yoast_head":"\nBi\u1ec3u \u0111\u1ed3 th\u1eddi gian: H\u01b0\u1edbng d\u1eabn ph\u01b0\u01a1ng ph\u00e1p theo m\u00f4-\u0111un \u26a1<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1ch ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3 th\u1eddi gian ph\u1ee9c t\u1ea1p b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p theo m\u00f4-\u0111un. 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