{"id":2152,"date":"2018-07-09T03:10:34","date_gmt":"2018-07-09T03:10:34","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=2152"},"modified":"2025-03-08T11:56:43","modified_gmt":"2025-03-08T04:56:43","slug":"huong-dan-cach-su-dung-dong-ho-so-wellink-hl-401","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=2152","title":{"rendered":"H\u01b0\u1edbng d\u1eabn c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 s\u1ed1 Wellink HL – 401"},"content":{"rendered":"

M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p m\u00e1y c\u00f3 ngu\u1ed3n nh\u01b0ng kh\u00f4ng th\u1ec3 k\u00edch, m\u00e1y k\u00edch nh\u01b0ng kh\u00f4ng l\u00ean h\u00ecnh, m\u00e1y kh\u00f4ng nh\u1eadn LAN,\u0111\u01a1 treo. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 s\u1ed1 Wellink HL – 401 \u0111\u1ec3 ki\u1ec3m tra.<\/span><\/p>\n

\"H\u01b0\u1edbng
H\u01b0\u1edbng d\u1eabn c\u00e1ch s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 s\u1ed1 Wellink HL – 401<\/figcaption><\/figure>\n

Th\u00f4ng qua vi\u1ec7c \u0111o xung c\u01a1 b\u1ea3n c\u00f3 th\u1ec3 gi\u00fap ch\u00fang ta lo\u1ea1i b\u1ecf nhanh v\u00f9ng h\u01b0 ho\u1eb7c kh\u00f4ng h\u01b0.<\/span><\/p>\n

\u0110\u1ea7u ti\u00ean ph\u1ea3i k\u1ec3 \u0111\u1ebfn l\u00e0 xung 32,768khz , l\u00e0 xung nh\u1ecbp ban \u0111\u1ea7u gi\u00fap I\/O v\u00e0 BIOS ho\u1ea1t \u0111\u1ed9ng ngay khi v\u1eeba c\u1ea5p ngu\u1ed3n v\u00e0o m\u00e1y.<\/span><\/p>\n

– N\u1eb1m g\u1ea7n chip I\/O n\u1ebfu l\u00e0 lo\u1ea1i XTAL 4 ch\u00e2n th\u00ec ch\u00e2n 1,4 \u0111i v\u00e0o I\/O.<\/span>
\n\u00a0\u00a0<\/span>
\n– Lu\u00f4n c\u00f3 t\u1ee5 v\u00e0i ch\u1ee5c P n\u1ed1i mass h\u1ed3i ti\u1ebfp duy tr\u00ec dao \u0111\u1ed9ng.<\/span><\/p>\n

– Ch\u00e2n 2,3 n\u1ed1i mass ch\u1ed1ng nhi\u1ec5u.<\/span><\/p>\n

\"\u0110\u1ed3ng
\u0110\u1ed3ng h\u1ed3 s\u1ed1 Wellink HL – 401<\/figcaption><\/figure>\n

Th\u00f4ng qua xung n\u00e0y c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh nhanh c\u00f3 ngu\u1ed3n 3,3v c\u1ea5p cho I\/O v\u00e0 ROM_ BIOS hay ch\u01b0a, n\u1ebfu \u0111\u00e3 c\u00f3 ngu\u1ed3n c\u1ea5p cho chip I\/O m\u00e0 kh\u00f4ng xu\u1ea5t hi\u1ec7n xung n\u00e0y th\u00ec kh\u1ea3 n\u0103ng l\u1ed7i I\/O l\u00e0 r\u1ea5t cao, m\u1ed9t s\u1ed1 \u00edt h\u01b0 ch\u00ednh th\u1ea1ch anh n\u00e0y. D\u0129 nhi\u00ean l\u00e0 kh\u00f4ng th\u1ec3 k\u00edch ngu\u1ed3n khi m\u1ea5t xung n\u00e0y.<\/span><\/p>\n

K\u1ebf ti\u1ebfp l\u00e0 xung chu\u1ea9n g\u1ed1c c\u1ee7a kh\u1ed1i clockgen xung 14,3 MHz n\u00e0y ch\u1ec9 xu\u1ea5t hi\u1ec7n t\u1ea1i th\u1ea1ch anh 14,3MHz \u0111\u01b0\u1ee3c m\u1eafc s\u1eb5n \u0111i v\u00e0o 2 ch\u00e2n c\u1ee7a IC xung clock, khi kh\u1edfi \u0111\u1ed9ng m\u00e1y, 1 d\u01b0\u1eddng ngu\u1ed3n 3,3v c\u1ea5p v\u00e0o ic, t\u1ea1i ch\u00e2n thach anh xu\u1ea5t hi\u1ec7n ngay s\u00f3ng sin c\u00f3 t\u1ea7n s\u1ed1 14,3 MHz. N\u1ebfu m\u00e1y c\u00f3 ngu\u1ed3n \u0111\u1ea7y \u0111\u1ee7, 1 \u0111\u01b0\u1eddng l\u1ec7nh \u0111\u1ebfn ic cho ph\u00e9p kh\u1ed1i xung nh\u1ecbp n\u00e0y ho\u1ea1t \u0111\u1ed9ng, l\u00fac n\u00e0y xung 14,3 MHz s\u1ebd \u0111\u01b0\u1ee3c nh\u00e2n l\u00ean theo t\u1eebng t\u1ec9 l\u1ec7 nh\u1ea5t \u0111\u1ecbnh cho ra nhi\u1ec1u t\u1ea7n s\u1ed1 kh\u00e1c nhau, \u0111i ra c\u00e1c ch\u00e2n kh\u00e1c nhau c\u1ea5p v\u1ec1 c\u00e1c kh\u1ed1i tr\u00ean main.<\/span><\/p>\n

Sau khi c\u00f3 l\u1ec7nh CLK_EN c\u00e1c xung 33 Mhz, 48 Mhz, 66,100,200Mhz… xu\u1ea5t hi\u1ec7n v\u1edbi t\u1ea7n s\u1ed1 cao nh\u01b0 v\u1eady \u0111ang ho\u1ea1t \u0111\u1ed9ng trong ic n\u00ean ic ph\u00e1t nhi\u1ec7t r\u1ea5t cao n\u00ean khi \u0111o th\u1ea5y c\u00f3 14.3 Mhz, v\u00e0 ic n\u00f3ng r\u00e1t \u0111\u00f3 ch\u00ednh l\u00e0 d\u1ea5u hi\u1ec7u cho bi\u1ebft ic \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng. \u0110\u00e2y c\u0169ng l\u00e0 kinh nghi\u1ec7m cho c\u00e1c b\u1ea1n m\u1edbi v\u00e0o ngh\u1ec1 l\u01b0u \u00fd v\u00ec \u0111a s\u1ed1 c\u00e1c b\u1ea1n khi th\u1ea5y ic n\u00e0y n\u00f3ng r\u00e1t tay th\u00ec cho l\u00e0 h\u01b0, l\u1ed7i. Kh\u00f4ng \u0111\u00e2u, n\u00f3 \u0111ang ho\u1ea1t \u0111\u1ed9ng \u0111\u1ea5y.<\/span><\/p>\n

B\u00ean m\u00ecnh c\u00f3 \u0111\u1ea7y \u0111\u1ee7 thi\u1ebft b\u1ecb nh\u01b0 m\u00e1y \u0111\u1ebfm t\u1ea7n l\u00ean \u0111\u1ebfn 2Ghz, m\u00e1y hi\u1ec7n s\u00f3ng digital 100M th\u00ec vi\u1ec7c ki\u1ec3m tra c\u00e1c xung 66,100.200Mhz r\u1ea5t d\u1ec5 v\u00e0 ch\u00ednh x\u00e1c nh\u01b0ng c\u01a1 b\u1ea3n v\u1eabn d\u00f9ng \u0111\u1ed3ng h\u1ed3 HL301 nh\u01b0 tr\u00ean l\u00e0 \u0111\u1ee7, ch\u1ec9 nh\u1eefng tr\u01b0\u1eddng h\u1ee3p th\u1eadt ph\u1ee9c t\u1ea1p m\u1ed3i d\u00f9ng \u0111\u1ebfn m\u00e1y m\u00f3c tr\u00ean.<\/span><\/p>\n

M\u1ed9t s\u1ed1 pan nh\u01b0 kh\u00f4ng nh\u1eadn LAN, \u0111\u01a1, treo m\u00e1y nghi ng\u1edd l\u00e0 l\u1ed7i ic LAN c\u00e1c b\u1ea1n n\u00ean \u0111o nhanh xung 25 Mhz. N\u1ebfu c\u00f3 xung n\u00e0y th\u00ec c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh kh\u1ea3 n\u0103ng h\u01a1n 90% l\u00e0 c\u00f3 ngu\u1ed3n c\u1ea5p v\u00e0 ic LAN ok. Kh\u00f4ng nh\u1eadn LAN c\u00f3 th\u1ec3 do chip nam.<\/span><\/p>\n

Tr\u00ean \u0111\u00e2y l\u00e0 1 s\u1ed1 thao t\u00e1c nhanh c\u01a1 b\u1ea3n h\u1ed7 tr\u1ee3 \u0111o xung t\u1eeb HL-301 ho\u1eb7c hl-401 t\u1ed1i \u0111a 40Mhz, th\u1ebf\u00a0c\u0169ng \u0111\u1ee7 gi\u00fap ch\u00fang ta ti\u00eat ki\u1ec7m th\u1eddi gian khoanh v\u00f9ng s\u1eeda ch\u1eefa h\u1eefu hi\u1ec7u.<\/span><\/p>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/p>\n

C\u00d4NG TY C\u1ed4 PH\u1ea6N H\u1eccC VI\u1ec6N IT<\/strong><\/p>\n

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\n<\/i><\/p>\n

H\u1ecdc vi\u1ec7n IT.vn \u2013 Truy\u1ec1n ngh\u1ec1 th\u1ef1c t\u1ebf c\u00f9ng b\u1ea1n \u0111\u1ebfn th\u00e0nh c\u00f4ng!\u00a0<\/i><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p m\u00e1y c\u00f3 ngu\u1ed3n nh\u01b0ng kh\u00f4ng th\u1ec3 k\u00edch, m\u00e1y k\u00edch nh\u01b0ng kh\u00f4ng l\u00ean h\u00ecnh, m\u00e1y kh\u00f4ng nh\u1eadn LAN,\u0111\u01a1 treo. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111\u1ed3ng h\u1ed3 s\u1ed1 Wellink HL – 401 \u0111\u1ec3 ki\u1ec3m tra.<\/p>\n","protected":false},"author":95,"featured_media":12276,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[670],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2152"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2152"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2152\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12276"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}