PM5355
PMC-Sierra,Inc.
S/UNI-622
622 Mbit/s SATURN User Network Interface
• Compatible with ATM Forum UTOPIA
• Packaged in a 208-pin, 28 mm by
28 mm slugged Plastic Quad Flat Pack
(PQFP) with 0.5 mm pin pitch.
FEATURES
interface format, with support for multi-
®
• Monolithic SATURN -compatible
PHY applications.
SONET/SDH ATM User Network
• Provides access to section and line
Interface (UNI) for LAN, Public UNI, and
datalinks and all additional overhead to
Public NNI connections.
APPLICATIONS
allow external processing for full
• Implements the ATM Transmission
SONET/SDH Network-Node Interface
• Workstations and Personal Computer
• LAN Switches and Hubs
• Routers
• Video Servers
• Backbones
Convergence (TC) sublayer according to
(NNI) compliance.
ATM Forum specifications using the
• Provides a generic 8-bit
SONET/SDH 622.08 Mbit/s and
microprocessor bus interface for
155.52 Mbit/s formats.
configuration, control, and status
• Also supports the SONET 51.84 Mbit/s
format.
• Processes all SONET/SDH UNI
overhead.
monitoring.
• Provides a standard 5-signal P1149.1
JTAG test port for boundary scan
board test purposes.
• Broadband Switching Systems
• Test Equipment
• Inserts and extracts ATM payloads using
• Provides TTL-compatible inputs and
ATM cell delineation.
outputs.
• Provides a SCI-PHY™-compliant 50 MHz
synchronous 16-bit (4-cell deep) FIFO
buffers in both transmit and receive paths.
• Low power, +5 V CMOS technology.
BLOCK DIAGRAM
Transport
O/H
Insert
Path
O/H
Insert
Parallel
Input/Output
Port
JTAG Test
Access Port
TSOC
TDAT[15:0]
TSICLK
TSOUT
Transmit
Section
O/H
TXPRTY[1:0]
FPOUT
Transmit Path
O/H Processor
Transmit ConCat
Processor
Transmit
Line O/H
Processor
TCA
TWRENB
TFCLK
Byte-
Interleaved
Mux
Transmit
ATM 4-Cell
FIFO
Transmit
ATM Cell
Processor
POUT[7:0]
Processor
OOF
PICLK
FPIN
Section
Trace
Buffer
Path
Trace
Buffer
Drop
Side
Interface
Line Side
Interface
RSOC
Receive
ATM Cell
Processor
Receive
ATM 4-Cell
FIFO
Receive ConCat
Processor
Receive
Line O/H Interleaved
Processor Demux
Byte-
RDAT[15:0]
RXPRTY[1:0]
RCA
FPOS
Receive
Section
O/H
Receive Path
O/H Processor
PIN[7:0]
RSICLK
Processor
RRDENB
RFCLK
RSIN
Transport
O/H
Extract
Microprocessor
Interface
Path O/H
Extract
PMC-940402 (R5)
©1998 PMC-Sierra, Inc. October, 1998
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