PM7311 pmc-sierra, PM7311 Datasheet - Page 113

• Manufacturer Part Number: PM7311
• Description: Freedm 84a1024l Assp Telecom Standard Datasheet
• Manufacturer: pmc-sierra

Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2021832, Issue 2
Register 0x01C: Master Low Priority Interrupt Status
This register reports the interrupt status for various events detected or initiated by the FREEDM
84A1024L. Reading these registers acknowledges and clears the interrupts. The register is also
writeable to allow s/w testing of interrupt generation and service routines.
LSNEI
USNEI
The Lost Sequence Number Event interrupt status bit indicates a datagram has been declared
lost or has been discarded because its Any-PHY channel’s storage allocation
(AP_ALLOC_THR or LT_LEVEL) has been exceeded, yet did not trigger an Unexpected
Sequence number event. A datagram is declared lost after the timeout period specified by
LOST_CNT in the Connection Context Memory has expired. When set, the Lost SN CI
Register (LSNCI) holds the CI number of the last connection to detect a lost SN event.
LSNEI and LSNCI remain valid when interrupts are disabled and may be polled to detect lost
SN events.
The Unexpected Sequence number interrupt status bit reports unexpected SN conditions to
the microprocessor. USNEI is set high when an unexpected SN is detected. When set, the
Unexpected SN CI Register (USNCI) holds the CI number of the last connection to detect an
unexpected SN. USNEI and USNCI remain valid when interrupts are disabled and may be
polled to detect unexpected SN events.
Bit
Bit 31
To
Bit 12
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Function
Unused
Reserved
UPSNEI
AUTODRI
UNTSXI
TUNPVI
CECCRSI
CECCCBI
RPFEI
RABRTI
RFCSEI
MPISTATI
ENFEI
USNEI
LSNEI
Default
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Released
113