XRT86L30
REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
TABLE 30: RECEIVE
N
ATIONAL
BITS REGISTER
R
EGISTER 17
R
ECEIVE
N
ATIONAL ITS EGISTER (RNBR)
B
R
HEX ADDRESS: 0X0111
B
IT
F
UNCTION
T
YPE
RO
RO
RO
RO
RO
D
EFAULT
DESCRIPTION-OPERATION
4
Sa4
Sa5
Sa6
Sa7
Sa8
x
x
x
x
x
Received National Bits
These Read Only bit-fields contain the values of the National bits
within the most recently received non-FAS frame.
3
2
1
0
TABLE 31: RECEIVE
E
XTRA
BITS REGISTER
R
EGISTER 18
IT
R
ECEIVE
E
XTRA
B
ITS EGISTER (REBR)
R
HEX ADDRESS: 0X0112
B
F
UNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
7
IF Detection
RO
0
In Frame Detection (DS1/E1)
This register bit is used to indicate whether the receive framer is In Frame
or out of Frame.
0 = Out of Frame
1 = In Frame
6-4 Reserved
-
-
Reserved
Extra Bit 1
3
EX1
RO
x
Corresponds to value in bit 5 within timeslot 16 of frame 0 of the signaling
multiframe
2
ALARMFE
RO
x
CAS Multi-Frame Yellow Alarm
Corresponds to value in bit 6(CAS Multiframe Yellow Alarm) within
timeslot 16 of frame 0 of the signaling multiframe.
0 = Remote E1 transmitting terminal is not sending CAS Multiframe Yel-
low Alarm
1 = Remote E1 transmitting terminal is sending CAS Multiframe Yellow
Alarm
1
0
EX2
EX3
RO
RO
x
x
Extra Bit 2
Corresponds to value in Bit 7 within timeslot 16 of frame 0 of the signaling
multiframe
Extra Bit 3
Corresponds to value in Bit 8 within timeslot 16 of frame 0 of the signaling
multiframe
NOTE: The value of bits [3:0] within this register only have meaning if the framer is using Channel Associated Signaling.
54
EXAR [ EXAR CORPORATION ]
