PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Register 426H, 466H, 4A6H: RTTB, TU #3 in TUG2 #1 to TUG2 #7, TIU
Interrupt
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Unused
TIU7I
TIU6I
TIU5I
TIU4I
TIU3I
TIU2I
TIU1I
X
0
0
0
0
0
0
0
R
R
R
R
R
R
R
This register is used to identify and acknowledge trail trace identifier unstable
interrupts for the tributaries TU #3 in TUG2 #1 to TUG2 #7.
TIU1I-TIU7I:
The TIU1I to TIU7I bits identify the source of trail trace identifier unstable
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) or VT3 mode, the associated TIUxI bit is unused and will return a logic
0 when read. When operational, the TIU1I to TIU7I bits report and
acknowledge TIU interrupt of TU #3 in TUG2 #1 to TUG2 #7, respectively.
Interrupts are generated upon change of identifier unstable state. An TIUxI bit
is set high when a trail trace identifier unstable event on the corresponding
tributary (TU #3 in TUG2 #x ) occurs and are cleared immediately following a
read of this register, which also acknowledges and clears the interrupt. TIUxI
remains valid when interrupts are not enabled (TIUE set low) and may be
polled to detect trail trace identifier unstable events.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
316
PMC [ PMC-SIERRA, INC ]
