METHOD AND APPARATUS FOR BURST START DETECTION

摘要

High speed serial links are used in many applications as they provide high throughput with limited number of signals and input/output pins. Normally, the high speed links are established once at power up and rarely taken down except for maintenance purposes. When the high speed serial links are used for battery operated devices, the power consumption of these links becomes an important issue. Dynamic high speed serial link establishment and shutdown techniques are used in such application to keep the power consumption low. Frequent link establishment and shutdown may cause occasional link establishment failures leading to latencies and even complete failure to communicate between two entities. A method and apparatus are disclosed that enable robust link establishment for more reliable operation and reduced latency.

主权项

1. A communication subsystem for use in high speed serial communication in a wireless mobile station, the communication subsystem comprising:
a buffer configured to receive an input bit stream from a serial communication source and to output a first bit stream; an accumulator configured to receive the input bit stream from the serial communication source and to output a second bit stream; and a sliding window integrator device coupled to the buffer and the accumulator configured to compute a result of all bits received from the first and second bit streams over a length of a predetermined sliding window, and configured to output an identification of a burst start from the serial communication source using the result.