XR72L52 Datasheet, PDF (176/480 Pages) Exar Corporation – TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L52
REV. 1.0.1
xr
TWO CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
TABLE 20: THE RELATIONSHIP BETWEEN THE NUMBER OF TXOHENABLE PULSES SINCE THE LAST OCCURRENCE OF
THE TXOHFRAME PULSE, TO THE DS3 OVERHEAD BIT THAT IS BEING PROCESSED BY THE XRT72L52
NUMBER OF TXOHENABLE PULSES
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
THE OVERHEAD BIT EXPECTED BY THE
XRT72L52
F0
FEAC
F1
X
F1
UDL
F0
UDL
F0
UDL
F1
P
F1
CP
F0
CP
F0
CP
F1
P
F1
FEBE
F0
FEBE
F0
FEBE
F1
M0
F1
DL
F0
DL
CAN THIS OVERHEAD BIT BE ACCEPTED
BY THE XRT72L52?
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
Yes
No
No
No
Yes
No
Yes
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