| 摘要 |
In an example, a linear feedback shift register (LFSR) provides pseudorandom bit sequences (PRBSs) to an interconnect for training, testing, and scrambling purposes. The interconnect may include a state machine, with states including LOOPBACK, CENTERING, RECENTERING, and ACTIVE states, among others. The interconnect is permitted to move from “CENTERING” to “LOOPBACK” via a sideband signal. In LOOPBACK, CENTERING, and RECENTERING, PRBSs are used for training and testing purposes to electrically characterize and test the interconnect, and to locate a midpoint for a reference voltage Vref. A unique, noncorrelated PRBS is provided to each lane, calculated using one common output bit. |
