PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
Register 427H, 467H, 4A7H: RTTB, TU #4 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 #4 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), VT3 or TU12 (VT2) mode, the associated TIMxI 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 #4 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 #4 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
317
PMC [ PMC-SIERRA, INC ]
