Samples are slated for availability in the first quarter of 2001. Further power savings are offered by a standby mode inwhich only the receive path is active. A major contributing factor to the extremely low power consumption figure is the line driver architecture utilizing an active line termination and drive impedance. With this concept,the traditional passive line termination is minimized in terms of resistor value. This also results in substantial reductions in losses of power and output voltage swing.
Active termination allows the user to program the line impedance.
This feature can be used to intelligently adapt the termination impedance to different line conditions under software control, thus minimizing echo. Analog echo cancellation is integrated to reduce analog and digital filtering requirements in both modes,thus contributing to an overall lower cost solution. Control interface may be selected as either parallel or serial. The data and the control interfaces support bussing of up to 8 lines.