
XRT84L38
116
OCTAL T1/E1/J1 FRAMER
REV. 1.0.1
Loop-back Code Control Register (LCCR) (Indirect Address = 0xn0H, 0x24H)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Receive
Loop-back
Code
Activation
Length Bit 1
Receive
Loop-back
Code
Activation
Length Bit 0
Receive
Loop-back
Code
De-Activa-
tion Length
Bit 1
Receive
Loop-back
Code
De-Activa-
tion Length
Bit 0
Transmit
Loop-back
Code Length
Bit 1
Transmit
Loop-back
Code Length
Bit 0
Framed
Loop-back
Code Select
Automatic
Loop-back
Select
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
B
IT
N
UMBER
B
IT
N
AME
B
IT
T
YPE
B
IT
D
ESCRIPTION
7-6
Receive Loop-back Code
Activation Length
R/W
Receive Loop-back Code Activation Length:
These bits are used to determine the Receive Loop-back Code
Activation length. The table below shows length of the Receive
Loop-back Activation code according to values of these bits.
5-4
Receive Loop-back Code
De-Activation Length
R/W
Receive Loop-back Code Activation Length:
These bits are used to determine the Receive Loop-back Code
De-Activation length. The table below shows length of the
Receive Loop-back De-Activation code according to values of
these bits.
Bit Value
00
01
10
11
Length of Loop-back Code
4
5
6
7
Bit Value
00
01
10
11
Length of Loop-back Code
4
5
6
7