PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Register BFH, DFH, FFH: VTPP, TU #4 in TUG2 #1 to TUG2 #7, AIS Interrupt
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
AIS7I
AIS6I
AIS5I
AIS4I
AIS3I
AIS2I
AIS1I
X
0
0
0
0
0
0
0
R
R
R
R
R
R
R
This register is used to identify and acknowledge tributary path AIS interrupts for
the tributaries TU #4 in TUG2 #1 to TUG2 #7.
AIS1I-AIS7I:
The AIS1I to AIS7I bits identify the source of tributary path AIS interrupts. In
TU3 mode, these bits are unused and will return a logic 0 when read. When
the corresponding TUG2 tributary group is configured for TU2 (VT6), VT3 or
TU12 (VT2) mode, the associated AISxI bit is unused and will return a logic 0
when read. When operational, the AIS1I to AIS7I bits report and acknowledge
AIS interrupt of TU #4 in TUG2 #1 to TUG2 #7, respectively. Interrupts are
generated upon detection and removal of tributary path AIS alarm. An AISxI
bit is set high when a tributary path AIS event on the associated tributary
occurs and are cleared immediately following a read of this register, which
also acknowledges and clears the interrupt. AISxI remains valid when
interrupts are not enabled (ALARME set low) and may be polled to detect
tributary path AIS events.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
204
PMC [ PMC-SIERRA, INC ]
