PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
inverted, causing 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 #3 in the corresponding TUG2. 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 #3 in the
corresponding TUG2.
PF:
The PF bit enables pointer follower mode for tributary TU #3 in the
corresponding TUG2. 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 are read-only and reflect the values written into the
corresponding register of TU #1. The configuration specified by the
CONFIG[1:0] bits are selected as follows:
CONFIG[1] CONFIG[0] Configuration
Active TU (VT)
0
0
1
1
0
1
0
1
TU2 (VT6)
VT3
TU12 (VT2)
TU11 (VT1.5)
#1
#1, #2
#1, #2, #3
#1, #2, #3, #4
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
180
PMC [ PMC-SIERRA, INC ]
