Repeater status LED array interface

摘要

An interface to an indicator array for providing status information from a repeater used in a computer network. The interface multiplexes status value signals from the repeater provided to a group of enabled source buffers driving columns of the array. Rows of the array are driven by status enable signals from a sink buffer attached to each row. LEDs of the array have an anode connected to a source buffer and a cathode connected to a sink buffer. Cycling through the source buffer groups and status enable signals provides a 10% duty cycle for each indicator. When status values change more frequently than about once per millisecond, a pulse stretcher is used to extend the perceived duration of the status indication.