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METHOD FOR INTERFACING BETWEEN CPU AND CARD OF PERSONAL COMPUTER CARD INTERNATIONAL-ASSOCIATION IN WIRELESS LAN SYSTEM
METHOD FOR INTERFACING BETWEEN CPU AND CARD OF PERSONAL COMPUTER CARD INTERNATIONAL-ASSOCIATION IN WIRELESS LAN SYSTEM
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机译：无线局域网系统中个人计算机卡国际关联的CPU与卡之间的接口方法
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摘要
Purpose: it is a kind of for combining between a CPU of (PCMCIA) and card the method that engages to be arranged to the power using the CPU to do one's utmost in the personal computer card world in a kind of wireless local area network (WLAN) system and improving a data processing speed of a computer system, the access data by a word units are arrived when the CPU of the data/address bus with 16 accesses the pcmcia card of a data/address bus with 8 by being able to carry out CPU. Construction: the data of the addresses n for the pcmcia card receptacle controller (30) that a pcmcia card socket (10) input is engaged with a CPU (40). One latch portion (20) receives the data of the addresses n from pcmcia card socket (10) and is latched received data to its output end. Latch portion (20) and data receiver data latch of the pcmcia card receptacle controller (30) in the addresses (n+1) th of pcmcia card socket (10). When pcmcia card receptacle controller (30) receive data, a signal control logic part (50) is applied to the active signal that one makes the latch portion (20) of terminal (EN) and an output control terminal (OC) for an invalid signal. If first address bus has a logic high, signal control logic part (50) is further using a signal (DTACK) of the CPU (40) of the circulation for terminating CPU (40).
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