Method and apparatus determining order and identity of subunits by inputting bit signals during first clock period and reading configuration signals during second clock period

摘要

A unit train (10) includes a base unit (12). Base unit (12) generates a clock signal and a bit signal. Base unit (12) also receives and interprets a data signal. Unit train (10) also includes a plurality of subunits (14) serially coupled in a certain order. Each subunit (14) receives the clock signal and the bit signal. Each subunit (14) also generates a portion of the data signal. Additionally each of the subunits (14) has a corresponding identity. Also included in the unit train (10) is a clock/data line (67) for relaying the clock signal and the data signal between the base unit (12) and each subunit (14).