
XRT86L30
SINGLE T1/E1/J1 FRAMER/LIU COMBO
REV. P1.0.1
PRELIMINARY
45
T
ABLE
16: A
LARM
G
ENERATION
R
EGISTER
- E1 M
ODE
R
EGISTER
8 -E1 M
ODE
A
LARM
G
ENERATION
R
EGISTER
(AGR) H
EX
A
DDRESS
: 0
X
0108
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
AUXPG
RO
0
AUXP Generation
Enables the generation of AUXP pattern which is an unframed 1010…. pattern.
0 = AUXP is disabled.
1 = AUXP is enabled.
6
LOF
R/W
0
Loss of Frame Declaration Criteria
This Read/Write bit-field is used to select the LOF or Red Alarm generation cri-
teria the Receive E1 Framer block will employ.
0 = Receive E1 Framer declares Red Alarm unless both FAS and multi-frame
alignment are achieved.
1 = Prevents Receive E1 Framer from declaring Red Alarm condition; FAS
Alignment is maintained.
5
YEL(1)
R/W
0
Yellow Alarm and Multiframe Yellow Alarm Generation
These bits activate and deactivate the transmission of a yellow alarm. The Yel-
low alarm and multiframe Yellow alarm data pattern can be injected either auto-
matically upon detection of the loss of alignment or controlled by YEL bits.
Setting these bits to b01 will enable automatic yellow alarm transmission in
response to a loss of frame alignment (FAS red alarm) and multiframe yellow
alarm is transmitted in response to a loss of multiframe alignment (CAS red
alarm). The decoding of these bits are explained as follows:
00 = Disable the transmission of yellow alarm.
01 = Enable automatic yellow alarm generation.
1. The yellow alarm bits (bit 3 of non-FAS frames in TS0) is transmitted by echo-
ing the receive FAS alignment status. Logic one is transmitted if loss of FAS
alignment occurred.
2. The multiframe yellow alarm bits (bit 6 of frame 0 in TS16) is transmitted by
echoing the receive CAS multiframe alignment status. Logic one is transmitted
if loss of CAS multiframe alignment occurred.
10 = Yellow and multiframe yellow alarms are transmitted as 0.
11 = Yellow and multiframe yellow alarms are transmitted as 1.
4
YEL(0)
R/W
0
3
AISG(1)
R/W
0
AIS Generation Select
These Read/Write bit-fields are used to configure the channel to generate and
transmit an AIS pattern, as described below.
00 = No AIS Alarm generated
01 = Enable unframed AIS alarm generation
10 = Enable AIS16 generation
11 = Enable framed AIS alarm generation
2
AISG(0)
R/W
0
1
AISD(1)
R/W
0
AIS Pattern Detection Select
These Read/Write bit-fields are used to specify the type of AIS pattern that the
receive E1 framer block will detect as described below.
00 = AIS alarm detection is disabled.
01 = Enable unframed AIS alarm detection.
10 = Enable AIS 16 detection.
11 = Enable framed AIS alarm detection.
0
AISD(0)
R/W
0