
SBSLITE Telecom Standard Product Data Sheet
Preliminary
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010883, Issue 2
227
Register 0C9H: RP8D Interrupt Status
Bit
Type
Function
Default
Bit 15
Unused
X
Bit 14
Unused
X
Bit 13
Unused
X
Bit 12
Unused
X
Bit 11
Unused
X
Bit 10
Unused
X
Bit 9
Unused
X
Bit 8
Unused
X
Bit 7
R
FUOI
X
Bit 6
R
LCVI
X
Bit 5
R
OFAI
X
Bit 4
R
OCAI
X
Bit 3
Unused
X
Bit 2
Unused
X
Bit 1
Unused
X
Bit 0
Unused
X
This register reports interrupt status due to change of character alignment, change of frame
alignment, detection of line code violations, and FIFO overrun or underrun events in the RP8D.
OCAI
The out-of-character-alignment interrupt status bit (OCAI) reports and acknowledges change
of character alignment state interrupts. Interrupts are generated when the character alignment
block changes state to the out-of-character-alignment state or to the in-character-alignment
state. OCAI is set high when change of state occurs. When the interrupt is masked by the
OCAE bit the OCAI remains valid and may be polled to detect change of frame alignment
events.
OFAI
The out-of-frame-alignment interrupt status bit (OFAI) reports and acknowledges change of
frame alignment state interrupts. Interrupts are generated when the frame alignment block
changes state to the out-of-frame-alignment state or to the in-frame-alignment state. OFAI is
set high when change of state. When the interrupt is masked by the OFAE bit the OFAI
remains valid and may be polled to detect change of frame alignment events.