XRT86L30
REV. 1.0.1
SINGLE T1/E1/J1 FRAMER/LIU COMBO
T
ABLE 21: TRANSMIT
S
IGNALING AND
D
ATA
INK
L
INK
S
ELECT
REGISTER - T1 MODE
R
EGISTER 10 - T1 MODE
TRANSMIT
S
IGNALING AND ATA
D
L
S
ELECT
R
EGISTER (TSDLSR)
HEX ADDRESS:0X010A
B
IT
F
UNCTION
TYPE
D
EFAULT
DESCRIPTION-OPERATION
5
TxDLBW[1]
R/W
R/W
0
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....)
4
TxDLBW[0]
R/W
0
10 = FDL is a 2kHz data link channel carried by even framing
bits(3,7,11...)
3
2
TxDE[1]
TxDE[0]
R/W
R/W
0
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.
1
0
TxDL[1]
TxDL[0]
R/W
R/W
0
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.
TABLE 22: FRAMING
C
ONTROL
REGISTER E1 MODE
R
EGISTER 11 -- E1 MODE
F
RAMING
C
ONTROL EGISTER (FCR)
R
H
EX
ADDRESS: 0X010B
B
IT UNCTION
F
TYPE
D
EFAULT
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
5
CASC(1)
CASC(0)
R/W
R/W
0
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.
48
EXAR [ EXAR CORPORATION ]
