
XRT86L30
48
REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
5
TxDLBW[1]
R/W
0
Data Link Bandwidth
00 = FDL is a 4kHz data link channel
01 = FDL is a 2kHz data link channel carried by odd framing bits
(1,5,9....)
10 = FDL is a 2kHz data link channel carried by even framing
bits(3,7,11...)
4
TxDLBW[0]
R/W
0
3
TxDE[1]
R/W
0
DE Select
00 = The D/E time slots are inserted from TxSER.
01 = The D/E time slots are inserted from the LAPD controller.
10 = The D/E time slots are inserted from the serial signaling input.
11 = The D/E time slots are inserted from the fractional input.
2
TxDE[0]
R/W
0
1
TxDL[1]
R/W
0
DL Select
00 = LAPD Controller/SLC96 Buffer. The data link bits are inserted
from the LAPD controller. (LAPD1 is the only controller that can be
used to transport LAPD messages through the data link bits)
01 = Serial Input. The data link bits are inserted from serial data
input.
10 = Overhead Input. The data link bits are inserted from overhead
input.
11 = None (forced to 1). The data link bits are forced to 1.
0
TxDL[0]
R/W
0
TABLE 22: FRAMING CONTROL REGISTER E1 MODE
REGISTER 11 -- E1 MODE
FRAMING CONTROL REGISTER (FCR)
HEX ADDRESS: 0X010B
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7
RSYNC
R/W
0
Force Re-Synchronization
A 0 to 1 transition in this bit-field forces the Receive E1 Framer to
restart the synchronization process. This bit field is automatically
cleared (set to 0) after frame synchronization is reached.
6
CASC(1)
R/W
0
Loss of CAS Multiframe Alignment Criteria Select
These two Read/Write bits are used to select the Loss of CAS Multi-
frame Alignment Declaration criteria. The relationship between the
state of these two bit fields and the corresponding Loss of CAS Multi-
Frame is presented below.
00 = Two consecutive CAS Multi-Frames with Multiframe Alignment
Signal (MAS) errors
01 = Three consecutive CAS Multi-Frames with MAS errors
10 = Four consecutive CAS Multi-Frames with MAS errors
11 = Eight consecutive CAS Multi-Frames with MAS errors
NOTE: These bits are only active if Channel Associated Signaling is
used.
5
CASC(0)
R/W
0
TABLE 21: TRANSMIT SIGNALING AND DATA LINK SELECT REGISTER - T1 MODE
REGISTER 10 - T1 MODE
TRANSMIT SIGNALING AND DATA LINK SELECT REGISTER (TSDLSR)
HEX ADDRESS:0X010A
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION