PM5345 S/UNI-155
DATA SHEET
PMC-930305
ISSUE 4
SATURN USER NETWORK INTERFACE
Extracts all transport overhead bytes and serializes them at 5.184 Mbit/s for
optional external processing.
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Extracts all path overhead bytes and serializes them at 576 kbit/s for optional
external processing.
Detects loss of signal (LOS), out of frame (OOF), loss of frame (LOF), line
alarm indication signal (AIS), line far end receive failure (FERF), loss of
pointer (LOP), path alarm indication signal (AIS), and path yellow alarm.
Counts received section BIP-8 (B1) errors, received line BIP-24 (B2) errors,
line far end block errors (FEBE), received path BIP-8 (B3) errors and path far
end block errors (FEBE) for performance monitoring purposes.
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Counts received HCS errored cells that are discarded, and received HCS
errored cells that are corrected and passed on for performance monitoring
purposes.
1.2
The transmitter section:
Provides an internal four cell FIFO into which cells are written using a generic
8 bit wide or 16 bit wide datapath interface
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Provides idle/unassigned cell insertion, HCS generation/insertion, and ATM
cell payload scrambling.
Inserts ATM cells into the transmitted STS-3c (STM-1) synchronous payload
envelope using H4 framing.
Generates the transmit payload pointer (H1, H2) and inserts the path
overhead.
Optionally inserts externally generated path overhead bytes received via a
576 kbit/s serial interface.
Scrambles the transmitted STS-3c (STM-1) stream and inserts framing bytes
(A1, A2) and the identity byte (C1).
Optionally inserts externally generated transport overhead bytes received via
a 5.184 Mbit/s serial interface.
Interfaces to a downstream physical media device at 155.52 Mbit/s using
differential outputs. Alternately, the S/UNI can interface to a parallel to serial
converter at 19.44 Mbyte/s
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
2
PMC [ PMC-SIERRA, INC ]
