PM7311 pmc-sierra, PM7311 Datasheet - Page 114

• 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
ENFEI
MPISTATI
RFCSEI
RABRTI
RPFEI
The number of Fragments per packet greater than Maximum allowed interrupt status bit
reports when a packet with 82 or more fragments has been detected. ENFEI is active high.
When set, the Excessive Number of Fragments CI Register (ENFCI) holds the CI number that
caused the interrupt. ENFEI and ENFCI remain valid when interrupts are disabled and may
be polled. This interrupt is only generated when output format is frame/packet (not in
fragment out mode).
When asserted, the Memory Port Idle Status bit indicates to the microprocessor that the
memory port has completed its last command. This signal is the inverse of MPBusy found in
the Memory Port Control Register. MPISTATI remains valid when interrupts are disabled and
may be polled to indicate idle status.
The receive frame check sequence error interrupt status bit reports receive FCS error
interrupts to the microprocessor. RFCSEI is set high when a mismatch between the received
FCS code and the computed CRC residue is detected. RFCSEI remains valid when interrupts
are disabled and may be polled to detect receive FCS error events. Erred datagrams will be
redirected during CI lookup and can be programmed to a separate CI. In addition, the RERR
bit on the Rx Any-PHY interface will be set.
The receive abort interrupt status bit reports receive HDLC abort interrupts to the
microprocessor. RABRTI is set high upon receipt of an abort code (at least 7 contiguous 1’s).
RABRTI remains valid when interrupts are disabled and may be polled to detect receive abort
events.
The receive packet format error interrupt status bit reports receive packet format error
interrupts to the microprocessor. RPFEI is set high upon receipt of a packet that is longer
than the maximum programmed length, of a packet that is shorter than 32 bits (CRC-CCITT)
or 48 bits (CRC-32), or of a packet that is not octet aligned. RPFEI remains valid when
interrupts are disabled and may be polled to detect receive packet format error events.
FREEDM 84A1024L ASSP Telecom Standard Product Data Sheet
Released
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