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PM7346 S/UNI-QJET
DATASHEET
PMC-960835
ISSUE 6
SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE
315
Control
Transmit Operation
Receive Operation
E3 frame. Therefore cell
delineation must be performed to
locate the ATM cell boundaries.
Computes the incoming BIP-8
value over one 125 μs frame. The
result is held and compared
against the value in the EM byte of
the subsequent frame.
Extracts the repetitive trail access
point identifier and verifies that the
same pattern is received.
Compares the received pattern to
the expected pattern programmed
in a register.
Extracts and reports the FERF bit
value when it has been the same
for 3 or 5 consecutive frames.
S/UNI-QJET also extracts and
accumulates FEBE occurrences
and extracts the Payload Type,
Tributary Unit Multiframe, and
Timing Market indicator bits and
reports them through
microprocessor accessible
registers.
Extracts the Network Operator byte
and outputs it on ROH or optionally
terminates it in the RDLC. All 8 bits
of the Network Operator byte are
extracted and presented on ROH
or to the RDLC.
EM:
Error Monitor,
BIP-8
Inserts the calculated BIP-8
by computing even parity over
all transmit bits, including the
overhead bits of the previous
125 μs frame.
Inserts the 16 byte trail
access point identifier
specified in internal registers.
TR:
Trail Trace
MA:
Maintenance
and Adaptation
Byte
Inserts the FERF, FEBE,
Payload Type bits, Tributary
Unit Multiframe Indicator bits
and the Timing Marker bit as
programmed in a register or
as indicated by detection of
receive OOF or BIP-8 errors.
NR:
Network
Operator Byte
Inserts the Network Operator
byte from the TOH overhead
stream or optionally from the
TDPR. All 8 bits of the
Network Operator byte are
inserted from TOH or from
the TDPR.
Inserts the GC byte from the
TOH overhead stream or
optionally from the TDPR
block.
GC:
General
Purpose
Communication
Channel
Extracts the GC byte and outputs it
on ROH or optionally terminates it
in the RDLC block.