
XRT83SL28
xr
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
38
TABLE 11: MICROPROCESSOR REGISTER BIT DESCRIPTION
CHANNEL CONTROL REGISTER (0X05H, 0X09H, 0X0DH, 0X11H, 0X15H, 0X19H, 0X1DH, 0X21H)
BIT
NAME
FUNCTION
Register
Type
Default
Value
(HW reset)
D7
Reserved
This Register Bit is Not Used
X
D6
SRESET_n Software Reset
By setting this bit to "1" for more than 10
S, the individual channel
is reset to its default register configuration and all state machines
are internally reset.
"0" = ITU G.775
"1" = ETSI300233
R/W
0
D5
AISIE_n
Alarm Indication Signal Interrupt Enable
"0" = Masks the AIS interrupt generation
"1" = Enables Interrupt generation
R/W
0
D4
DMOIE_n
Driver Monitor Output Interrupt Enable
"0" = Masks the DMO interrupt generation
"1" = Enables Interrupt generation
R/W
0
D3
RLOSIE_n Receiver Loss of Signal Interrupt Enable
"0" = Masks the RLOS interrupt generation
"1" = Enables Interrupt generation
R/W
0
D2
Reserved
This Register Bit is Not Used
X
D1
D0
LB1
LB0
Loop Back Select
These bits are used to configure the channel in one of three loop-
back modes. For additional information on loopback modes, see
the Application Section of this datasheet.
R/W
0
TABLE 12: MICROPROCESSOR REGISTER BIT DESCRIPTION
CHANNEL CONTROL REGISTER (0X06H, 0X0AH, 0X0EH, 0X12H, 0X16H, 0X1AH, 0X1EH, 0X22H)
BIT
NAME
FUNCTION
Register
Type
Default
Value
(HW reset)
D7
Reserved
This Register Bit is Not Used
R/W
X
D6
Reserved
This Register Bit is Not Used
R/W
X
LB1
Digital Loopback
LB0
Remote Loopback
Analog Loopback
No Loopback
Loopback Mode
0
1
0
1
0
1