| 摘要 |
The problems of increased current demand and high circuit speeds with associated resultant EMI resulted in a new circuit specification being required, and that based on the Gunning Transceiver Logic (GTL) gave reduced power demand and increased circuit operating speed. Excessively high feedback loading is a problem. An input circuit with an input-end connected to the bus and an output-end connected to the control circuit provides conversion of a first digital signal from the bus into a second digital signal, which has a first logic level and a second logic level relative to the reference voltage. A controlled reference voltage generator converts the adjustable reference voltage into the first potential for application by the input circuit, when the control circuit sends the second digital signal to the bus, and into the second potential when the bus sends the first digital signal to the control circuit.
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