S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
DEADPHYTO[15:0]
DEADPHYTO sets the number of cell periods before a PHY which has cells available for it,
but which does not accept any cells whatsoever, is declared inoperative. Inoperative PHYs
automatically have any AIS, CC, Fwd PM, or cells from the BCIF or MCIF discarded, to
avoid head-of-line blocking problems resulting from repeatedly waiting for these cells to time
out. Once the PHY accepts even a single cell, the Inoperative declaration is removed. The
Dead PHY Timeout field defaults to 0, which disables this feature.
DEADPHY[15:0]
When a PHY is declared inoperative as per the setting of DEADPHYTO, the corresponding
DEADPHY bit is set to logic 1. An optional interrupt (DEADPHYI) is declared. PHYs which
are not configured in the OSDQ will be declared dead shortly after startup. The resulting
interrupt should be cleared, allowing subsequent declarations on configured PHYs to generate
an interrupt.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
216
PMC [ PMC-SIERRA, INC ]
