
PRELIMINARY
XRT86SH221
156
REV. P1.0.5
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
0 - Does not configure the Receive STM-0 TOH Processor block to transmit the AIS-P indicator (via the downstream
traffic) upon declaration of the SD defect.
1 - Configures the Receive STM-0 TOH Processor block to automatically transmit the AIS-P indicator (via the
downstream traffic) anytime (and for the duration that) it declares the SD defect condition.
N
OTE
:
The user must also set BIT 0 (Transmit AIS-P Enable) to 1 to configure the Receive STM-0 TOH Processor
block to automatically transmit the AIS-P indicator, in response to this defect condition.
BIT 3 - Unused
BIT 2 - Transmit Path AIS upon declaration of the Loss of Frame (LOF) defect
This READ/WRITE bit-field is used to configure the Receive STM-0 TOH Processor block to automatically transmit a
Path AIS (AIS-P) Indicator via the downstream traffic (e.g., towards the Receive STM-0 POH Processor block), anytime
(and for the duration that) it declares the LOF defect condition.
0 - Does not configure the Receive STM-0 TOH Processor block to transmit the AIS-P indicator (via the downstream
traffic) upon declaration of the LOF defect.
1 - Configures the Receive STM-0 TOH Processor block to automatically transmit the AIS-P indicator (via the
downstream traffic) anytime (and for the duration that) it declares the LOF defect condition.
N
OTE
:
The user must also set BIT 0 (Transmit AIS-P Enable) to 1 to configure the Receive STM-0 TOH Processor
block to automatically transmit the AIS-P indicator, in response to this defect condition.
BIT 1 - Transmit Path AIS upon declaration of the Loss of Signal (LOS) defect
This READ/WRITE bit-field is used to configure the Receive STM-0 TOH Processor block to automatically transmit a
Path AIS (AIS-P) Indicator via the downstream traffic (e.g., towards the Receive STM-0 POH Processor block), anytime
(and for the duration that) it declares the LOS defect condition.
0 - Does not configure the Receive STM-0 TOH Processor block to transmit the AIS-P indicator (via the downstream
traffic) anytime it declares the LOS defect condition.
1 - Configures the Receive STM-0 TOH Processor block to automatically transmit the AIS-P indicator (via the
downstream traffic) anytime (and for the duration that) it declares the LOS defect condition.
N
OTE
:
The user must also set BIT 0 (Transmit AIS-P Enable) to 1 to configure the Receive STM-0 TOH Processor
block to automatically transmit the AIS-P indicator, in response to this defect condition.
BIT 0 - Automatic Transmission of AIS-P Enable
This READ/WRITE bit-field serves two purposes.
It is used to configure the Receive STM-0 TOH Processor block to automatically transmit the Path AIS (AIS-P) indicator,
via the down-stream traffic (e.g., towards the Receive STM-0 POH Processor block), upon detection of an SF, SD,
Section Trace Mismatch, Section Trace Unstable, LOF or LOS defect conditions.
It also is used to configure the Receive STM-0 TOH Processor block to automatically transmit a Path AIS (AIS-P)
Indicator via the downstream traffic (e.g., towards the Receive STM-0 POH Processor block) anytime it declares the
AIS-L defect condition within the incoming STM-0 datastream.
0 - Configures the Receive STM-0 TOH Processor block to NOT automatically transmit the AIS-P indicator (via the
downstream traffic) upon declaration of the AIS-L defect condition or any of the above-mentioned defect conditions.
1 - Configures the Receive STM-0 TOH Processor block to automatically transmit the AIS-P indicator (via the
downstream traffic) upon declaration of the AIS-L defect or any of the above-mentioned defect conditions.
N
OTE
:
The user must also set the corresponding bit-fields (within this register) to 1 in order to configure the Receive
STM-0 TOH Processor block to automatically transmit the AIS-P indicator upon declaration of a given alarm/
defect condition.