PM5380-BI PMC-Sierra, Inc., PM5380-BI Datasheet - Page 327
PM5380-BI
Manufacturer Part Number
PM5380-BI
Description
Network Interface, SATURN User Network Interface (8x155) Telecom Standard Product
Manufacturer
PMC-Sierra, Inc.
Datasheet
1.PM5380-BI.pdf
(440 pages)
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Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC- 2010299, Issue 2
Register 0x1021: RUL3 Interrupt Status/Enable
FUNRI:
FUNRE:
Reserved:
The FIFO underrun interrupt is set high when a read from the FIFO is attempted while the
FIFO is empty. The FUNRI register bit is cleared immediately after it is read, thus
acknowledging the event has been recorded. This register bit is only valid during UTOPIA
Level 3 operation.
NOTE: In a single PHY UTOPIA operation, if RENB realignment happens on the same
PHY, and this PHY is not empty, RUL3 FUNRI interrupt is reported. This re-alignment is a
protocol violation that should be avoided by link layer device.
The FIFO underrun interrupt enable controls the assertion of the INTB output when FUNRI
is high. When FUNRE is set high, an interrupt is generated upon assertion event of the
FUNRI register. When FUNRE is set low, changes in the FUNRI status do not generate an
interrupt.
All reserved bits must be programmed to zero for proper operation.
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R/W
R/W
R/W
R/W
R
R
R
R
Function
Reserved
FUNRE
Reserved
Reserved
Reserved
FUNRI
Reserved
Reserved
S/UNI®-8x155 ASSP Telecom Standard Product Data Sheet
Default
0
0
0
0
X
0
0
0
Released
327
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