
PM5317 SPECTRA-9953 Telecom Standard Product Data Sheet
Release
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2000741, Issue 5
409
OFAV
The out-of-frame-alignment status bit (OFAV) reports the state of the frame alignment
circuit. OFAV is set high when the receiver is in the out-of-frame-alignment state. OFAV is
set low when the receiver is in the in-frame-alignment state.
OCAE
The out-of-character-alignment interrupt enable bit (OCAE) controls the change of
character alignment state interrupts. Interrupts may be generated when the character
alignment circuit changes state to the out-of-character-alignment state or to the in-character-
alignment state. When OCAE is set high, an interrupt is generated when a change of state
occurs. Interrupts due to changes of character alignment state are masked when OCAE is
set low.
OFAE
The out-of-frame-alignment interrupt enable bit (OFAE) controls the change of frame
alignment state interrupts. Interrupts may be generated when the frame alignment block
changes state to the out-of-frame-alignment state or to the in-frame-alignment state. When
OFAE is set high, an interrupt is generated when a change of state occurs. Interrupts due to
changes of frame alignment state are masked when OFAE is set low.
LCVE
The line code violation interrupt enable bit (LCVE) controls the line code violation event
interrupts. Interrupts may be generated when a line code violation is detected. When
LCVE is set high, an interrupt is generated when an LCV is detected. Interrupts due to
LCVs are masked when LCVE is set low.
FUOE
The FIFO underrun/overrun status interrupt enable (FUOE) controls the underrun/overrun
event interrupts. Interrupts may be generated when the underrun/overrun event is detected.
When FUOE is set high, an interrupt is generated when a FIFO underrun or overrun
condition is detected. Interrupts due to FIFO underrun of overrun conditions are masked
when FUEO is set low.
OFAAIS
The out of frame alignment alarm indication signal (OFAAIS) is set high to force high-
order AIS signals in the R8TD egress data stream if the R8TD is in the out-of-frame-
alignment state. The R8TD egress data stream is left unaffected in the out-of-frame
alignment state when the OFFAIS is set low.