XRT94L33_3 Datasheet, PDF (234/801 Pages) Exar Corporation – -CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER - SONET REGISTERS

XRT94L33
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Rev222...000...000
Table 145: Receive STS-3c Path – AUTO AIS Control Register (Address Location= 0x11BB)
BIT 7
Unused
R/O
0
BIT 6
Transmit
AIS-P
(Down-
stream)
Upon C2
Byte
Unstable
R/W
0
BIT 5
Transmit
AIS-P
(Down-
stream)
Upon
UNEQ-P
R/W
0
BIT 4
Transmit
AIS-P
(Down-
stream)
Upon PLM-
P
R/W
0
BIT 3
Transmit
AIS-P
(Down-
stream)
Upon Path
Trace
Message
Unstable
R/W
0
BIT 2
Transmit
AIS-P
(Down-
stream)
Upon TIM-P
BIT 1
Transmit
AIS-P
(Down-
stream)
upon LOP-P
R/W
R/W
0
0
BIT 0
Transmit
AIS-P
(Down-
stream)
Enable
R/W
0
BIT NUMBER
7
6
5
NAME
Unused
Transmit AIS-P
(Downstream) upon C2
Byte Unstable
Transmit AIS-P
(Downstream) upon
UNEQ-P
TYPE
R/O
DESCRIPTION
R/W Transmit Path AIS (Downstream, towards Receive STS-1/STM-0
Telecom Bus Interface # 0) upon Declaration of the Unstable C2
Byte Defect Condition:
This READ/WRITE bit-field permits the user to configure the Receive
STS-3c POH Processor block to automatically transmit the Path AIS
(AIS-P) Indicator via the “downstream” STS-3c traffic (e.g., towards
Receive STS-1/STM-0 Telecom Bus Interface # 0), anytime (and for
the duration that) it declares Unstable C2 Byte defect condition within
the “incoming” STS-3c data-stream.
0 – Does not configure the Receive STS-3c POH Processor block to
automatically transmit the AIS-P indicator (via the “downstream”
traffic) whenever it declares “Unstable C2 Byte” defect condition.
1 – Configures the Receive STS-3c POH Processor block to
automatically transmit the AIS-P indicator (via the “downstream”
traffic) whenever (and for the duration that) it declares the “Unstable
C2 Byte” defect condition.
Note:
The user must also set Bit 0 (Transmit AIS-P Enable) to “1”
to configure the Receive STS-3c POH Processor block to
automatically transmit the AIS-P indicator, in response to
this defect condition.
R/W Transmit Path AIS (Downstream, towards the Receive STS-
1/STM-0 Telecom Bus Interface # 0) upon Declaration of the
UNEQ-P (Path-Unequipped) Defect Condition:
This READ/WRITE bit-field permits the user to configure the Receive
STS-3c POH Processor block to automatically transmit the Path AIS
(AIS-P) Indicator via the “downstream” traffic (e.g., towards Receive
STS-1/STM-0 Telecom Bus Interface # 0), anytime (and for the
duration that) it declares the UNEQ-P defect condition.
0 – Does not configure the Receive STS-3c POH Processor block to
automatically transmit the AIS-P indicator (via the “downstream”
traffic, towards Receive STS-1/STM-0 Telecom Bus Interface # 0)
whenever it declares the UNEQ-P defect condition.
1 – Configures the Receive STS-3c POH Processor block to
automatically transmit the AIS-P indicator (via the “downstream”
traffic, towards Receive STS-1/STM-0 Telecom Bus Interface # 0)
whenever (and for the duration that) it declares the UNEQ-P defect
condition.
Note: The user must also set Bit 0 (Transmit AIS-P Enable) to “1”
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