Instruction/ maintenance manual of the product Intel 8x930Ax Cypress
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Cypress Semi conductor Cor poration • 3901 Nor th First Stree t • San Jos e • C A 95134 • 408-9 43-2600 Feb ruar y 25, 2 000 Con verting fr om Intel 8x930A x to Cypre ss EZ -USB Intr oduction In 1999, Cypr ess p artnered with Intel in an excl usiv e prod uct li censing agre ement f or the USB Intel produc t f amily .
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB 2 Figure 1. Ho w the 8x930Ax Hand l es a “Ge t Descr iptor” Request Figur e 2. EZ-USB Logic Does Most of the W ork f or a “Get Descriptor .
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB 3 T a bl e 1 sho ws the r esult s of our compi lation and a com pari- son o f th e same f unction implemented using EZ-USB . It is the m an ner in whi ch EZ- USB handles t he USB pr o t oc ols that will need to be addr essed when con v er ting fr om the Int el 8x930Ax t o the EZ-USB f amily .
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB 4 tus , the y can be e xpanded to 64- byt e maxim um pac ket siz es, which will impr ov e USB thr oughput. F or isochr onous desi gns, endp oints wi ll need to be conv er ted from end- point 1 t o endpoin ts 8 th rough 15.
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB 5 10.P assiv e Netw orks Both the 8x 930Ax and EZ-USB h av e act iv e-HIGH RESET pins , b ut while t he 8x930Ax r equires only a cap acitor t o V CC , t he EZ-USB f amil y par ts r equire a r esi stor-capac itor netw or k.
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB 6 cam f or video cap ture o ver the USB b us, wh i l e off er in g high- quality video moti on and vi deo captur e perf o r mance . The f oll owing schemat ic (Exhi bit A) incl udes on ly t he USB por t ion of the r ef er ence design.
Con ver ting f r om Intel 8x93 0Ax to Cypress E Z-USB © Cypres s S e mi c onductor Corporation, 1 999. The information c ontained herein is subject to change without no ti c e. Cypress Semi co nductor Corporation assumes no responsibility f or the use of any circui tr y other than circuitry embodied in a Cypress Semicon ductor product.
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