
XRT86VL38
110
REV. V1.2.1
OCTAL T1/E1/J1 FRAMER/LIU COMBO - E1 REGISTER DESCRIPTION
T
ABLE
98: A
LARM
& E
RROR
I
NTERRUPT
E
NABLE
R
EGISTER
(AEIER) H
EX
A
DDRESS
: 0
X
nB03
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Rx_YEL_STATE
RO
0
Receive Yellow Alarm State
This READ-ONLY bit indicates whether or not the Receive E1 Framer block
is currently declaring the Yellow Alarm condition within the incoming E1
data-stream, as described below.
Yellow alarm or Remote Alarm Indication (RAI) is declared when the ‘A’ bit
of two consecutive non-FAS frames is set to ‘1’, which is equivalent to tak-
ing 375us to declare a RAI condition. Yellow alarm is cleared when the ‘A’
bit of two consecutive non-FAS frames is set to 0, which is equivalent to
taking 375us to clear a RAI condition.
0 – The Receive E1 Framer block is NOT currently declaring the Yellow
Alarm condition.
1 – The Receive E1 Framer block is currently declaring the Yellow Alarm
condition.
6
Reserved
-
-
Reserved
5
RxMYEL ENB
R/W
0
Change of CAS Multiframe Yellow Alarm Interrupt Enable
.
This bit permits the user to either enable or disable the “Change in CAS
Multiframe Yellow Alarm”
Interrupt, within the XRT86VL38 device. If the user enables this interrupt,
then the Receive E1 Framer block will generate an interrupt in response to
either one of the following conditions.
1.
The instant that the Receive E1 Framer block declares CAS
Multiframe Yellow Alarm.
2.
The instant that the Receive E1 Framer block clears the CAS
Multiframe Yellow Alarm.
0 – Disables the “Change in CAS Multiframe Yellow Alarm” Interrupt.
1 – Enables the “Change in CAS Multiframe Yellow Alarm” Interrupt.
4
-
R/W
0
This bit should be set to’0’ for proper operation.
3
LCV ENB
R/W
0
Line Code violation interrupt enable
This bit permits the user to either enable or disable the “Line Code Viola-
tion” interrupt within the XRT86VL38 device. If the user enables this inter-
rupt, then the Receive E1 Framer block will generate an interrupt when
Line Code Violation is detected.
0 = Disables the interrupt generation when Line Code Violation is detected.
1 = Enables the interrupt generation when Line Code Violation is detected.
2
RxLOF ENB
R/W
0
Change in Loss of Frame Condition interrupt enable
This bit permits the user to either enable or disable the “Change in Loss of
Frame Condition” Interrupt, within the XRT86VL38 device. If the user
enables this interrupt, then the Receive E1 Framer block will generate an
interrupt in response to either one of the following conditions.
1.
The instant that the Receive E1 Framer block declares the Loss of
Frame condition.
2.
The instant that the Receive E1 Framer block clears the Loss of
Frame condition.
0 – Disables the “Change in Loss of Frame Condition” Interrupt.
1 – Enables the “Change in Loss of Frame Condition” Interrupt.