XRT86L30
REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
TABLE 50: LOOPBACK
C
ODE
C
ONTROL
REGISTER
Register 35
L
OOPBACK ODE ONTROL
C
C
R
EGISTER (LCCR)
0X0124
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
1
FRAMED
R
0
Framed Loopback Code
Selects either framed or unframed loopback code operation.
0 = Unframed
1 = Framed
0
AUTOENB
R/W
0
Loopback Automatically
Enables loopback automatically.
0 = Automatic loopback is disabled
1 = Automatic loopback is enabled
TABLE 51: TRANSMIT LOOPBACK CODER REGISTER
Register 36
Transmit Loopback Coder Register (TLCR)
0x0125
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7-1 TXLBC[6:0]
R/W
1010101 Transmit Loopback Code
Determines the transmit loopback coding sequence.
0
TXLBCENB
R/W
0
Transmit Loopback Code Enable
Enables loopback code generation.
0 = Transmit loopback code is disabled.
1 = Transmit loopback code is enabled
TABLE 52: RECEIVE LOOPBACK ACTIVATION CODE REGISTER
Register 37
Receive Loopback Activation Code Register (RLACR)
0x0126
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7-1 RXLBAC[6:0]
R/W
1010101 Receive activation loopback code
Determines the receive activation loopback coding sequence.
0
RXLBACENB
R/W
0
Receive activation loopback code enable
Enables receive loopback code activation detection.
0 = Receive loopback code activation detection is disabled.
1 = Receive loopback code activation detection is enabled
TABLE 53: RECEIVE LOOPBACK DEACTIVATION CODE REGISTER
Register 38
Receive Loopback Deactivation Code Register (RLDCR)
0x0127
B
IT
FUNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7-1 RXLBDC[6:0]
R/W
1010101 Receive deactivation loopback code
Determines the receive deactivation loopback coding sequence.
0
RXLBDCENB
R/W
0
Receive deactivation loopback code enable
Enables receive loopback code deactivation detection.
0 = Receive loopback code deactivation detection is disabled.
1 = Receive loopback code deactivation detection is enabled
70
EXAR [ EXAR CORPORATION ]
