Symmetricom XLi IEEE 1588 - Manual (Page 15)

XLi IEEE 1588 Clock 7
997-01510-03, Rev. C, 12/12/2006
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Clock Architecture
Figures 1 and 2 on the following pages provide a simplified view of the standard XLi's clock architecture.
Figure 1: Functional Timing Block Diagram
DAC
16.384 MHz Osc. PLL
Rate Gen
Code Generation
Clock Machine
Phase Compare
200 MHz PLL
Clock DPLL
Aux Ref
1,5,10 MHz
Phase Measurement
10 MHz Osc.
1 PPS
Timing
Select
Time and Clock
Recovery
Code Input
1 PPS
Output
Code Out
Rate Out
Code Input
1 PPS A
1PPS B
Aux Ref
1 PPS Out
Code Out
Rate Out