CHUẨN GIAO TIẾP.docx

CHUN GIAO TIP

My vi tnh bao gm nhng chun giao tip sau y: USB PCI I2C CAN VGA HDMIChng ta s ln lt tm hiu r tng chun giao tip trn:

1. Chun USB:

c pht trin bi lin minh gm Compaq, Digital, IBM, Intel, Microsoft, NEC v Northern Telecom, chun Universal Serial Bus (USB).- Cu trc:- Mt cp USB c hai dy cung cp in v mt i dy xon truyn d liu.- 2 dy ngun cung cp in nng, in p c th ln ti 500mA-5V (+5V v dy chung GND).- Cc thit b s dng t in nng c cung cp in nng trc tip t Bus.- Cc Hub c th cung cp in nng cho cc thit b ni vi n t ngun in ring ca chng.- c thit k di dng cc u cm cho cc thit b tun theo chun cm l chy m vi tnh nng cm nng thit b (ni v ngt cc thit b khng cn phi khi ng li h thng).- Cho php m rng 127 thit b kt ni cng vo mt my tnh thng qua mt cng USB duy nht (bao gm cc hub USB)- Tc USB 1.0: Full Speed, tc truyn 12 Mbps USB 2.0: High-Speed, tc truyn 480Mbps USB 3.0: SuperSpeed, tc truyn 5.0Gbps

2. Chun PCI: ( gii thiu phn CARD MN HNH)Sau y l cc i ca PCI:- PCI 1.0: ra i nm 1992- PCI 2.0: ra i nm 1993.- PCI 2.1: ra i nm 1995- PCI-X 1.0: ra i thang 9/1999- Mini-PCI: ra i thng 11/1999- PCI 2.3: ra i thng 3/2002.- PCI-X 2.0: ra i thng 7/2002- PCI Express 1.0: ra i thng 7/2002 v t lu sau l 1.1- PCI Express 2.0: ra i 1/2007- PCI Express 3.0: ra i nm nay 2010

Chun PCI:Cho php gn cc thit b ngoi vi vi kh nng t nhn dng thit b (plug and play). Kt ni vt l: dng khe cm thng thng c mu trng. Hot ng: Truyn d liu song song vi tc xung nhp 33MHz v rng bus 32-64bit (bng thng 133MBps 266MBps), in p 5v. PCI-Express: truyn d liu ni tip vi bng thng 200MBps-6.4GBps3. Chun I2C Gii thiuI2C l chun giao tip ni tip gia ICs hay thit bngoi vi cn phi giao tip vi cc ICs hay thit bkhc, s dng iu khin nhiu thit b iu khin khc c b trtrong cc khi mch tng i xa nhau (