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XRT86VL30
56
REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
TABLE 38: TRANSMIT LOOPBACK CODER REGISTER (TLCR)
HEX ADDRESS: 0X0125
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-1
TXLBC[6:0]
R/W
1010101
Transmit Loopback Code
These seven bits determine the transmit loopback code. The MSB
of the transmit loopback code is loaded first for transmission.
0
TXLBCENB
R/W
0
Transmit Loopback Code Enable
This bit enables loopback code generation in the transmit path.
Transmit loopback code is generated by writing the transmit loop-
back code in this register and enabling it using this bit. The length
and the format of the transmit loopback code is determined by the
Loopback Code Control Register (Register address: 0x0124)
0 = Disables the transmit loopback code generation.
1 = Enables the transmit loopback code generation.
TABLE 39: RECEIVE LOOPBACK ACTIVATION CODE REGISTER - CODE 0 (RLACR0)
HEX ADDRESS: 0X0126
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-1
RXLBAC[6:0]
R/W
1010101
Receive activation loopback code
These seven bits determine the receive loopback activation code.
The MSB of the receive activation loopback code is received first.
0
RXLBACENB
R/W
0
Receive activation loopback code enable
This bit enables the receive loopback activation code detection.
Receive loopback activation code is detected by writing the
expected receive activation loopback code in this register and
enabling it using this bit.
The length and format of the Receive loopback activation code is
determined by the Loopback Code Control Register (Register
0x0124).
0 = Disables the receive loopback code activation detection.
1 = Enables the receive loopback code activation detection.
TABLE 40: RECEIVE LOOPBACK DEACTIVATION CODE REGISTER - CODE 0 (RLDCR0)
HEX ADDRESS: 0X0127
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7-1
RXLBDC[6:0]
R/W
1010101
Receive deactivation loopback code
These seven bits determine the receive loopback deactivation code.
The MSB of the receive deactivation loopback code is received first.
0
RXLBDCENB
R/W
0
Receive deactivation loopback code enable
This bit enables the receive loopback deactivation code detection.
Receive loopback deactivation code is detected by writing the
expected receive deactivation loopback code in this register and
enabling it using this bit.
The length and format of the Receive loopback deactivation code is
determined by the Loopback Code Control Register (Register
0x0124).
0 = Disables the receive loopback code deactivation detection.
1 = Enables the receive loopback code deactivation detection.