XRT8001 Datasheet, PDF (14/48 Pages) Exar Corporation – WAN Clock for T1 and E1 Systems

XRT8001
2.5 The “High Speed – Reverse” Mode
In the “High Speed - Reverse” Mode, the XRT8001 will
accept a 64kHz clock signal via the “Reference Clock
Input" (FIN), and will output a “M x 2.048MHz” clock
signal (where M can be equal to 1, 2, 4 or 8) via the
CLK1 and/or CLK2 output pins.
Note: The XRT8001 will accept and sythesze these clock
frequencies independent of whether it has been configured
to operate in the "Master" or "Slave" Modes.
Figure 11, presents a simple illustration of the
XRT8001 WAN Clock operating in the “High Speed -
Reverse” Mode.
64kHz
FIN
CLK1
M x 2.048MHz
M = 1, 2, 4 or 8
XRT8001
WAN Clock
CLK2
M x 2.048MHz
M = 1, 2, 4 or 8
Figure 11. Illustration of the XRT8001 WAN Clock Operating in the
“High Speed – Reverse” Mode
Rev. 1.01
14