DATA THROTTLING CIRCUIT AND METHOD FOR A SPACEWIRE APPLICATION

摘要

A Data Throttling method duplicates the full-speed transmission of data so that it appears to be transmitting at a 10Mhz rate. Additional storage elements and multiplexers are added along the data path but this completely eliminates undesirable complexity in the clock tree. In a two-bit application, data is received and transmitted two bits at a time, and yet the output l0Mhz data rate is maintained. For an even ratio between the system clock rate and the l0Mhz clock signal rate, bit0 is transmitted for half the time and bit1 is transmitted for the other half of the time. But if the full-speed clock rate is an odd multiple of 10Mhz, then there will be a "split cycle" including one bit0 and one bit1.