XRT8001 Datasheet, PDF (10/48 Pages) Exar Corporation – WAN Clock for T1 and E1 Systems

XRT8001
2.1 The Forward/Master Mode
In the Forward/Master Mode, the XRT8001 will accept
either an “N x 1.544MHz” or an “N x 2.048MHz” clock
signal via the FIN input pin (where: 1 < N < 16). From
this “reference signal” the XRT8001 will generate either
a “K x 56kHz” or a “K x 64kHz” clock signal (where: 1
< K < 32).
Figure 7, presents a simple illustration of the XRT8001
WAN Clock operating in the “Forward Master/Mode.”
N x 1.544MHz
or
N x 2.048MHz
Where 1 < N < 16
K x 56kHz
FIN
CLK1
or
K x 64kHz
Where 1 < K < 32
XRTXRT880001 01
WAN Clock
WAN Clock
CLK2
K x 56kHz
or
K x 64kHz
Where 1 < K < 32
Figure 7. Illustration of the XRT8001 WAN Clock
Operating in the Forward/Master Mode
Rev. 1.01
10