XRT8001 Datasheet, PDF (13/48 Pages) Exar Corporation – WAN Clock for T1 and E1 Systems

XRT8001
2.4 The “E1 to T1 Forward/Master” Mode
In the “E1 to T1 Forward/Master” Mode, the XRT8001
will accept a “Q x 2.048MHz” clock signal via the
“Reference Clock Input" (FIN), and will output a
“1.544MHz” clock signal via the CLK1 and/or CLK2
output pins.
Figure 10, presents a simple illustration of the
XRT8001 WAN Clock operating in the “E1 to T1
Forward/Master” Mode.
Note: The value of “Q” can range between 1 and 16.
Q x 2.048MHz
Where: 1 < Q < 16
FIN
CLK1
1.544MHz
XRT8001
WA^XN^RC^T8l⁰o⁰c¹k
CLK2
1.544MHz
Figure 10. Illustration of the XRT8001 WAN Clock
Operating in the “E1 to T1 Forward/Master” Mode
Rev. 1.01
13