
PRELIMINARY
XRT86SH221
278
REV. P1.0.5
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
BIT 3 - Change of Unstable TC API-V Message Defect Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the "VT-De-Mapper" block has generated the "Change of
Unstable Tandem Connection Access Point Identifier Message Defect Condition" Interrupt since the last read of this
register. The VT-De-Mapper block will generate this interrupt in response to either of the following conditions.
Whenever the VT-De-Mapper block declares the Unstable TC API-V Message defect condition.
Whenever the VT-De-Mapper block clears the Unstable TC API-V Message defect condition.
0 - Indicates that the "Change of Unstable TC API-V Message Defect Condition" Interrupt has NOT occurred since
the last read of this register.
1 - Indicates that the "Change of Unstable TC API-V Message Defect Condition" Interrupt has occurred since the last
read of this register.
BIT 2 - Change of TC LOMF-V Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the "VT-De-Mapper" block has generated the "Change of
Tandem Connection Loss of Multiframe Defect Condition" Interrupt since the last read of this register. The VT-De-
Mapper block will generate this interrupt in response to either of the following conditions.
Whenever the VT-De-Mapper block declares the TC LOMF-V defect condition.
Whenever the VT-De-Mapper block clears the TC LOMF-V defect condition.
0 - Indicates that the "Change of TC LOMF-V Defect Condition" Interrupt has NOT occurred since the last read of this
register.
1 - Indicates that the "Change of TC LOMF-V Defect Condition" Interrupt has occurred since the last read of this
register.
BIT 1 - Change of TC UNEQ-V Defect Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the "VT-De-Mapper" block has generated the "Change of
Tandem Connection Unequipped Indication Signal Condition" Interrupt since the last read of this register. The VT-De-
Mapper block will generate this interrupt in response to either of the following conditions.
Whenever the VT-De-Mapper block declares the TC UNEQ-V defect condition.
Whenever the VT-De-Mapper block clears the TC UNEQ-V defect condition.
0 - Indicates that the "Change of TC UNEQ-V Defect Condition" Interrupt has NOT occurred since the last read of this
register.
1 - Indicates that the "Change of TC UNEQ-V Defect Condition" Interrupt has occurred since the last read of this
register.
BIT 0 - Change of TC AIS-V Defect Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the "VT-De-Mapper" block has generated the "Change of
Tandem Connection Alarm Indication Signal Defect Condition" Interrupt since the last read of this register. The VT-De-
Mapper block will generate this interrupt in response to either of the following conditions.
Whenever the VT-De-Mapper block declares the TC AIS-V defect condition.
Whenever the VT-De-Mapper block clears the TC AIS-V defect condition.
0 - Indicates that the "Change of TC AIS-V Defect Condition" Interrupt has NOT occurred since the last read of this
register.
1 - Indicates that the "Change of TC AIS-V Defect Condition" Interrupt has occurred since the last read of this register.