Patent ID: 6069494
Filing Date: 2000-05-30
Classification: H03K

Abstract:
A method of interfacing a plurality of semiconductor devices to transfer a data signal therebetween, comprising the steps of:connecting said plurality of semiconductor devices to each other with a first bus for transmitting said data signal;connecting said plurality of semiconductor devices to each other with a second bus for transmitting amplitude data for said data signal;transmitting amplitude data from a first device of said plurality of semiconductor devices to a second device of said plurality of semiconductor devices, and further comprising the steps of:creating a first test signal having an amplitude according to said amplitude data;transmitting said first test signal from said second device to said first device; andchanging said amplitude data until said first device recognizes said first test signal transmitted from said second device; andtransmitting a second test signal from said first device to said second device, and further comprising the steps of:creating a second test signal;transmitting said second test signal from said second device to said first device;retransmitting or returning said second test signal from said second device to said first device; andchanging the amplitude of said second test signal until said first device recognizes said second test signal retransmitted from said second device.