PMC PM5346 Datasheet
PMC-Sierra,Inc.
155 Mb/s SATURN User Network Interface for LANs
PM5346
S/UNI-155-LITE
FEATURES
• Low-cost, monolithic SATURN®
SONET/SDH ATM User Network
Interface (UNI).
• Implements the ATM transmission
convergence (TC) sublayer according
to ATM Forum specifica tio ns usi ng t he
SONET/SDH 155.52 Mbit/s STS- 3c/
STM-1, and 51.84 Mbit/s STS-1
formats.
• Supports ATM-Forum mid-range PHY
and PMC-Sierra UNI-PHY™ subrates
at 25.92 and 12.96 Mbit/s.
• Supports UTP-5 or STP twisted pair
wiring interface devices and optical
driver and receiver modules for fiber
optic cable interfaces.
• Includes on-chip, Bellcore-compliant
clock recover y and clock synthesis.
• Operates in timing master or timing
slave (loop timed) modes.
BLOCK DIAGRAM
• Frames to SONET/SDH framing bytes
(A1 and A2), processes the section
and line Bit Interleaved Parity (B1 and
B2) and the Far-End Block Error (Z2)
bytes.
• Interprets the H1, H2, and H3 payload
pointer bytes.
• Processes t he SONET path overhead
BIP-8 (B3), signal label (C2), and path
status (G1) bytes.
• Inserts and extracts ATM payloads
using ATM ce ll delineation.
• Provides on-chip FIFO buffers in both
transmit and receive paths.
• Provides on-chip support for Generic
Flow Control (GFC) and XOFF flow
control.
• Provides a synchronous, 8-bit, plusparity SATURN-Compliant Interface for
PHYsical layer devices (SCI-PHY™)
bus operating at 33 MHz.
• Compatible with ATM Forum UTOPI A
interface format, with support for multiPHY applications.
• Provides a generic 8-bit
microprocessor bus inte rface for
configuration, contro l, and mon ito rin g.
• Provides TTL-compatible inputs and
outputs and differential PECL inpu ts.
• Low power, +5 V CMOS technology.
• Packaged in a 128-pin 14 mm by
20 mm Plastic Quad Flat Pack (PQFP)
with 0.5 mm lead pitch.
APPLICATIONS
• 155.52, 51.84, 25.92 and 12.96 Mbit/s
Twisted Pair or Optical ATM LANs
• Workstations and Personal Computer
NIC Cards
• Switches, Hubs, and Router Port
Cards
• SONET- or SDH-Compliant ATM UNIs
Line Side
TRCLK+
TRCLK-
TXC+
TXC-
TXD+
TXD-
RXDO+
RXD+
RXD-
RXDO-
RRCLK+
RRCLK-
ALOS+
ALOS-
TBYP
Clock
Generator
Driver
Data
Recovery
Clock
Recovery
System Side
ATP2
RATE0
Parallel
to Serial
Serial to
Parallel
RATE1
TCLK
TFPO
Transmit
Framer and
Overhead
Processor
Receive
Framer and
Overhead
Processor
TGFC
XOFF
TCP
Transmit ATM
Cell
Processor
Receive ATM
Cell
Processor
Transmit ATM
Cell FIFO
Receive ATM
Cell FIFO
Microprocessor
Interface
TSOC
TXPRTY
TDAT[7:0]
TCA
TWRENB
TFCLK
RSOC
RXPRTY
RDAT[7:0]
RCA
RRDENB
RFCLK
TSEN
LF-
LF+
LFO
ATP1
RBYP
PMC-930908 (R9) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 1998 PMC-Sierra, Inc. October,
RCLK
RFP
RALM
ALE
CSB
RDB
A[7:0]
D[7:0]
WRB
INTB
RSTB
PM5346 S/UNI-155-LITE
155 Mb/s SATURN User Network Interface for LANs
TYPICAL 155.52 Mbit/s JITTER PERFORMANCE
100
10
)
p
p
I
U
(
e
c
n
a
r
e
1
l
o
T
0.1
100 100 0 10000 100000 1000000 10000000
GR-253-C O RE
Jitter Freq. (Hz)
TYPICAL APPLICATION: UNI-PHY ATM TERMINAL
155.52 OR 51.84 Mbit/s NRZ PHY
Line Driver
and
Transformer
Transformer
and Line
Receiver
TXD+/-
RXD+/-
PM5346
®
-155-LITE
S/UNI
155 Mbit/s SATURN
User Network Interface
for LANs
TXPRTY
TDAT[7:0]
TSOC
TFCLK
TWRENB
TCA
®
RCA
RXPRTY
RDAT[7:0]
RSOC
RRDENB
RFCLK
ATM
Segmentation and
Reassembly
or
Switch Core
Head Office:
PMC-Sierra, Inc.
#105 - 8555 Baxter Place
Burnaby, B.C. V5A 4V7
Canada
Tel: 604.415.6000
Fax: 604.415.6200
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
To order documentation,
send email to:
document@pmc-sierra.com
or contact the head office,
Attn: Document Coordinator
All product documentation is
available on our web site at:
http://www.pmc-sierra.com
For corporate information,
send email to:
info@pmc-sierra.com
This product contains
patented ATM cell
delination technology under
license from Cisco
Systems, Inc.
PMC-930908 (R9)
1998 PMC-Sierra, Inc.
October, 1998
SATURN, SCI-PHY,
S/UNI-155-LITE, and UNI-PHY are
trademarks of PMC-Sierra, Inc.
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