HyperTransport™ System Architecture

Synchronous Clock Mode

The specification requires that all HT devices support the synchronous clock mode. This mode is the least complicated method of transferring data from transmitter to receiver. Synchronous clock mode requires that the transmit clock and receive clock have the same source, and operate at the same frequency. If we were to assume that the transmit clock and the receive clock always remained synchronized, then a simple clocking interface could be used as described in the following example.

A Conceptual Example

In this synchronous example, the transmit clock (Tx Clock) and receive clock (Rx Clock) are presumed to be in synchronization. Note, however, that source synchronous clocking requires that Transmit Clock Out (Tx Clk Out) ...