Released
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
Interrupt Mask for interrupts.
Bits
Description
High Priority Mask. Mask bits for high priority interrupts. Each mask bit is set to 1 to enable a
high priority interrupt when the corresponding bit in the Interrupt Register is 1.
31:0
3.4.2.5 Interrupt Register
Symbol: EIR
Address Offset: 00010h
Default Value: 00000000h
Access:
Read and Clear
Interrupt Register.
Bits
Description
Scheduler Grant to Empty TDM Queue. This is set if a Scheduler grant arrives for a TDM
input queue (VOQ) which has no cells waiting.
31
30
29
28
27
26
25
24
23
22
21
20
Scheduler Grant to Empty MC Queue. This is set if a Scheduler grant arrives for a MC input
queue (VOQ) which has no cells waiting.
Cells Flushed by TDM Sync. This is set if a TDM Sync clears waiting cells from TDM input
queues. If a TDM Sync arrives and the TDM input queues are already empty, this is not set.
Linecard Requests Flushed by TDM Sync. This is set if a TDM Sync clears nonzero TDM
Subport request counters.
Scheduler Grant to Nonwaiting UC Queue. This is set if a Scheduler Grant arrives for a
priority and port for which no subport queues are expecting grants.
oDS to oEPP Valid Mismatch. This is set if the three oDS to oEPP frame’s valid bit does not
match.
iDS to iEPP Valid Mismatch. This is set if the three iDS to iEPP frame’s valid bit does not
match.
Grant or Cell Body Dropped. This is set if 128 OC-192c celltimes have passed since a
grant, but no cell payload has arrived with the grant sequence number.
Invalid Cell Sequence Number from Subport 3. This is sent if Subport 3 has sent a cell
payload with a sequence number which does not match any outstanding grant.
Invalid Cell Sequence Number from Subport 2. This is sent if Subport 2 has sent a cell
payload with a sequence number which does not match any outstanding grant.
Invalid Cell Sequence Number from Subport 1. This is sent if Subport 1 has sent a cell
payload with a sequence number which does not match any outstanding grant.
Invalid Cell Sequence Number from Subport 0. This is sent if Subport 0 has sent a cell
payload with a sequence number which does not match any outstanding grant.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
171
PMC [ PMC-SIERRA, INC ]
