PM7367 datasheet(102/323 Pages) PMC

102 / 323 page

PM7367 FREEDM-32P32

DATA SHEET

PMC-1991499

ISSUE 2

FRAME ENGINE AND DATA LINK MANAGER

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMER’S INTERNAL USE

RPQSFI:

The receive packet descriptor small buffer free queue cache read interrupt

status bit (RPQSFI) reports receive packet descriptor small free queue cache

read interrupts to the PCI host. RPQSFI is set high when the programmable

number of RPDR blocks is read from the RPDR Small Buffer Free Queue.

RPQSFI remains valid when interrupts are disabled and may be polled to

detect RPDR small buffer free queue cache read events.

RPQLFI:

The receive packet descriptor large buffer free queue cache read interrupt

status bit (RPQLFI) reports receive packet descriptor large free queue cache

read interrupts to the PCI host. RPQLFI is set high when the programmable

number of RPDR blocks is read from the RPDR Large Buffer Free Queue.

RPQLFI remains valid when interrupts are disabled and may be polled to

detect RPDR large buffer free queue cache read events.

RPQRDYI:

The receive packet descriptor ready queue write interrupt status bit

(RPQRDYI) reports receive packet descriptor ready queue write interrupts to

the PCI host. RPQRDYI is set high when the programmable number of

RPDRs is written to the RPDR Ready Queue. RPQRDYI remains valid when

interrupts are disabled and may be polled to detect RPDR ready queue write

events.

RPDFQEI:

The receive packet descriptor free queue error interrupt status bit (RPDFQEI)

reports receive packet descriptor free queue error interrupts to the PCI host.

RPDFQEI is set high upon attempts to retrieve an RPDR when both the large

buffer and small buffer free queues are empty. RPDFQEI remains valid when

interrupts are disabled and may be polled to detect RPDR free queue empty

error events.

RPDRQEI:

The receive packet descriptor ready queue error interrupt status bit

(RPDRQEI) reports receive packet descriptor ready queue error interrupts to

the PCI host. RPDRQEI is set high upon attempts to write an RPDR when

ready queue is ready full. RPDRQEI remains valid when interrupts are

disabled and may be polled to detect RPDR ready queue full error events.

TDQFI:

The transmit packet descriptor free queue write interrupt status bit (TDQFI)

reports transmit packet descriptor free queue write interrupts to the PCI host.

TDQFI is set high when the programmable number of TDRs is written to the

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