PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0841H: R8TD APS1 Interrupt Status
Register 0849H: R8TD APS2 Interrupt Status
Register 0851H: R8TD APS3 Interrupt Status
Register 0859H: R8TD APS4 Interrupt Status
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
FUOI
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
Bit 8
Bit 7
R
R
R
R
Bit 6
LCVI
Bit 5
OFAI
Bit 4
OCAI
Bit 3
Unused
Unused
Unused
Unused
Bit 2
Bit 1
Bit 0
X
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 and is cleared immediately
following a read of this register, which also acknowledges and clears the interrupt. 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 occurs and is cleared immediately following a read of this
register, which also acknowledges and clears the interrupt. When the interrupt is masked by
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
408
PMC [ PMC-SIERRA, INC ]
