PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
S/UNI-622-MAX
PMC-1980589
ISSUE 5
SATURN USER NETWORK INTERFACE (622-MAX)
The POUT[7:0] outputs are provided by the Scrambler block and are updated with timing aligned
to TCLK. It also provides the FPOUT signal.
10.9 Transmit Line Overhead Processor (TLOP)
The Transmit Line Overhead Processor (TLOP) provides line level alarm signal insertion, and line
BIP-96 insertion (B2).
APS Insert
The APS Insert Block inserts the two automatic protection switch (APS) channel bytes in the Line
Overhead (K1 and K2) into the transmit stream when enabled by an internal register.
Line BIP Calculate
The Line BIP Calculate Block calculates the line BIP-96 error detection code (B2) based on the
line overhead and synchronous payload envelope of the transmit stream. The line BIP-96 code is
a bit interleaved parity calculation using even parity. Details are provided in the references. The
calculated BIP-96 code is inserted into the B2 byte positions of the following frame. BIP-96 errors
may be continuously inserted under register control for diagnostic purposes.
Line RDI Insert
The Line RDI Insert Block controls the insertion of line remote defect indication. Line RDI
insertion is enabled through register control. Line RDI is inserted by transmitting the code 110
(binary) in bit positions 6, 7, and 8 of the K2 byte contained in the transmit stream.
Line FEBE Insert
The Line FEBE Insert Block accumulates line BIP-96 errors (B2) detected by the Receive Line
Overhead Processor and encodes far end block error indications in the transmit Z2 byte.
10.10 Transmit Path Overhead Processor (TPOP)
The Transmit Path Overhead Processor (TPOP) provides transport frame alignment generation,
pointer generation (H1, H2), path overhead insertion and the insertion of path level alarm signals.
Pointer Generator
The Pointer Generator Block generates the outgoing payload pointer (H1, H2) as specified in the
references. The concatenation indication (the NDF field set to 1001, I-bits and D-bits set to all
ones, and unused bits set to all zeros) is inserted in the second and third pointer byte locations in
the transmit stream.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
55
PMC [ PMC-SIERRA, INC ]
