PM5351 Datasheet, PDF (277/393 Pages) PMC-Sierra, Inc – Quad 155 Mbit/s ATM and Packet Over SONET/SDH Physical Layer Device

S/UNI-TETRA
DATASHEET
PMC-1971240
ISSUE 7
PMC-Sierra, Inc.
PM5351 S/UNI-TETRA
SATURN USER NETWORK INTERFACE (155-TETRA)
are inverted prior to insertion in the POS frame. When FCSERR is set to logic
zero, the FCS is inserted normally.
TPAINV:
The TPAINV bit inverts the polarity of the TPA output signals. When TPAINV
is a logic one, the polarity of TPA is inverted When TPAINV is a logic zero,
TPA operates normally.
XOFF:
The XOFF serves as a transmission enable bit. When XOFF is set to logic
zero, POS frames are transmitted normally. When XOFF is set to logic one,
the current frame being transmitted is completed and then POS frame
transmission is suspended. When XOFF is asserted the FIFO still accepts
data and can overflow. XOFF is provided to facilitate system debugging
rather than flow control, which is better achieved using inter packet gapping.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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