Valpey Fisher Corporation introduced the VFJA432 and VFJA434 integrated timing modules for synchronizing Ethernet. The timing modules can synchronize an Ethernet physical layer to a telecom network timing reference while generating a 0.18 picosecond jitter Ethernet clock. The modules can synchronize to common telecom frequencies such as 8 KHz and 19.44 MHz from the backplane or common Ethernet frequencies such as 25 MHz and 125 Mhz from the physical layer. The input frequency is selectable from four preset frequencies. Once the timing module synchronizes to the input frequency, the modules can provide dual and quad output frequencies, respectively, from 10 MHz to 200 MHz.
Valpey Fisher Corporation
Click here for more information on the VFJA432: http://www.valpeyfisher.com/images/ProductPDFs/Timingmodule/VFJA/VFJA432_RevB0707.pdf
Click here for more information on the VFJA434: http://www.valpeyfisher.com/images/ProductPDFs/Timingmodule/VFJA/VFJA434_RevB0707.pdf