
PRELIMINARY
XRT86SH328
291
REV. P1.0.6
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
Bit 2 - Receive Loop-Back Deactivation Status - Code 1:
This READ-ONLY bit-field indicates whether or not the Receive DS1 Framer block is currently detecting (and flagging)
the Loop-Down (or Loop-Back Deactivate) code (associated with Code 1) within the incoming DS1 data-stream, as
depicted below.
`
0 = Indicates that the Receive DS1 Framer block is NOT currently detecting (nor flagging) the "Loop-Back Deactivate"
Code (associated with "Code 1") within the incoming DS1 data-stream.
`
1 = Indicates that the Receive DS1 Framer block is currently detecting (and flagging) the "Loop-Back Deactivate"
Code (associated with "Code 1") within the incoming DS1 data-stream.
Bit 1 - Change of Receive Loop-Back Activation State Interrupt Status - Code 1:
This RESET-upon-READ bit-field indicates whether or not the Receive DS1 Framer block has generated the "Change
of Receive Loop-Back Activation State" Interrupt (based upon loop-code "Code 1"), since the last read of this register.
The Receive DS1 Framer block will generate the "Change of Receive Loop-Back Activation State" Interrupt in response
to either of the following events.
Whenever the Receive DS1 Framer block detects (and validates) the "Loop-Back Activate" Code (associated with
"Code 1") within the incoming DS1 data-stream
Whenever the Receive DS1 Framer block ceases to detect the "Loop-Back Activate" code (associated with "Code
1") within the incoming DS1 data-stream.
`
0 = Indicates that the Receive DS1 Framer block has NOT generated the "Change of Receive Loop-Back Activation
State" Interrupt for "Code 1" since the last read of this register.
`
1 = Indicates that the Receive DS1 Framer block has generated the "Change of Receive Loop-Back Activation State"
Interrupt for "Code 1" since the last read of this register.
Bit 0 - Change of Receive Loop-Back Deactivation Status Interrupt Status - Code 1:
This RESET-upon-READ bit-field indicates whether or not the Receive DS1 Framer block has generated the "Change
of Receive Loop-Back Deactivation State" Interrupt (based upon loop-code "Code 1"), since the last read of this register.
The Receive DS1 Framer block will generate the "Change of Receive Loop-Back Deactivation State" Interrupt in
response to either of the following events.
Whenever the Receive DS1 Framer block detects (and validates) the "Loop-Back Deactivate" Code (associated with
"Code 1") within the incoming DS1 data-stream
Whenever the Receive DS1 Framer block ceases to detect the "Loop-Back Deactivate" code (associated with "Code
1") within the incoming DS1 data-stream.
`
0 = Indicates that the Receive DS1 Framer block has NOT generated the "Change of Receive Loop-Back Deactivation
State" Interrupt for "Code 1" since the last read of this register.
`
1 = Indicates that the Receive DS1 Framer block has generated the "Change of Receive Loop-Back Deactivation
State" Interrupt for "Code 1" since the last read of this register.
Bits 7 through 2 - Reserved:
Bit 1 - Change of Receive Loop-Back Activation Interrupt Enable - Code 1:
This READ/WRITE bit-field permits the user to either enable or disable the "Change of Receive Loop-Back Activation
T
ABLE
429: T1 F
RAMER
I
NTERRUPT
R
EGISTER
- R
ECEIVE
L
OOP
-B
ACK
C
ODE
I
NTERRUPT
E
NABLE
R
EGISTER
- C
ODE
1 (A
DDRESS
= 0
X
NB15,
WHERE
N
RANGES
IN
VALUE
FROM
0
X
01
TO
0
X
38)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Reserved
Change of
Receive
Loop-Back
Activation
Interrupt
Enable -
Code 1
Change of
Receive
Loop-Back
Deactivation
Interrupt
Enable -
Code 1
R/O
R/O
R/O
R/O
R/O
R/O
R/W
R/W
0
0
0
0
0
0
0
0