PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
DLOP:
The DLOP bit allows downstream pointer processing elements to be
diagnosed. When DLOP is set high, the new data flag (NDF) field of the
outgoing payload pointer in tributary TU #1 in TUG2 #1 or TU3 depending on
whether the VTPP is in TU3 mode, is inverted to cause downstream pointer
processing elements to enter a loss of pointer state. The DLOP bit has no
effect when the IPAIS bit is set high.
ALARME:
The ALARME bit enables loss of pointer and path AIS interrupts for tributary
TU #1 in TUG2 #1 or TU3 depending on whether the VTPP is in TU3 mode.
When ALARME is set high, an interrupt is generated upon entry to and exit
from the LOP and AIS state of the pointer interpreter state diagram. Interrupts
due to AIS and LOP status change are masked when ALARME is set low.
LOPV:
The LOPV bit indicates the loss of pointer status of tributary TU #1 in TUG2
#1 or TU3 depending on whether the VTPP is in TU3 mode.
PF:
The PF bit enables pointer follower mode for tributary TU #1 in TUG2 #1 or
TU3 depending on whether the VTPP is in TU3 mode. In pointer follower
mode, the tributary FIFO dead-zone is collapsed so that any variation in FIFO
depth will result in an outgoing pointer justification event. Any TU pointer
justification event on the corresponding incoming tributary, or an AU pointer
justification event affecting this tributary will cause an outgoing pointer
justification event.
CONFIG[1:0]:
The CONFIG[1:0] bits specify the tributary configuration of tributary group
TUG2 #1. The CONFIG[1:0] bits have no effect in TU3 mode. The
configuration specified by the CONFIG[1:0] bits are selected as follows:
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
170
PMC [ PMC-SIERRA, INC ]
