XRT8001 Datasheet, PDF (12/48 Pages) Exar Corporation – WAN Clock for T1 and E1 Systems

XRT8001
2.3 The Fractional T1/E1 Reverse/Master Mode
In the Fractional T1/E1 Reverse/Master Mode, the
XRT8001 will accept either a “P x 56kHz” or a “P x
64kHz” clock signal via the FIN input pin (where: 1 <
P < 32). From this “reference signal” the XRT8001 will
generate either a 1.544MHz or a 2.048MHz clock
signal.
Figure 9, presents a simple illustration of the XRT8001
WAN Clock operating in the “Fractional T1/E1 Re-
verse/Master" Mode.
P x 56kHz
or
P x 64kHz
Where: 1 < P < 32
FIN
CLK1
XRXRTT88000011
WAWNANCClloocckk
CLK2
1.544MHz
or
2.048MHz
1.544MHz
or
2.048MHz
Figure 9. Illustration of the XRT8001 WAN Clock Operat-
ing in the “Fractional T1/E1 Reverse/Master” Mode
Rev. 1.01
12