PM5345 Datasheet, PDF (1/2 Pages) PMC-Sierra, Inc – S/UNI-155 SATURN USER NETWORK INTERFACE

PM5345
Summary Information
S/UNI-155 SATURN USER NETWORK INTERFACE
FEATURES
• Monolithic SATURN™ SONET/SDH
Asynchronous Transfer Mode User
Network LAN Interface.
• Implements the ATM transmission
convergence (TC) sublayer for
Broadband ISDN according to ANSI
T1.646, ITU-T Recommendation
I.432 and ATM Forum document
"ATM User-Network Interface
Specification", Version 3.1.
• Operates at 19.44 Mbytes/s,
processing a duplex 8-bit or 16-bit
data stream and mapping ATM cells
into a SONET STS-3c or SDH STM-1
compatible bit serial stream operating
at 155 Mbit/s.
• Provides on-chip parallel-to-serial
and serial-to-parallel conversion
circuits and pseudo-ECL interfaces
operating at the155 Mbit/s line rate.
• Provides 4 cell deep FIFO buffers in
both transmit and receive paths and
provides interface circuitry for
external FIFO expansion.
• Expansion ports provides access to
all overhead to allow external
processing for full SONET/SDH
Network-Node Interface (NNI)
compliance.
• Provides a generic 8-bit
microprocessor bus interface for
configuration, control and status
monitoring.
• Provides a standard 5-signal
P1149.1 JTAG test port for boundary
scan board test purposes.
• Provides TTL compatible inputs and
outputs and a pseudo-ECL
compatible serial line side interface.
• Low power, +5 Volt CMOS
technology.
• 160 pin plastic quad flat pack (PQFP)
package.
APPLICATIONS
• ATM LAN interfaces for computers,
workstations, switches and PCs
• ATM public network switching system
interfaces
• B-ISDN User-Network Interfaces
• B-ISDN test equipment interfaces
• Gigabit network interfaces
BLOCK DIAGRAM
Line Side
System Side
TXCI+/-
TXCO+/-
TXD+/-
FPOUT
POUT[7:0]
POCLK
OOF
PICLK
FPIN
FPOS
PIN[7:0]
RXC+/-
RXD+/-
Par/
Ser
Line
Side
I/F
Ser/
Par
Tx
Section
O/H
Processor
Rx
Section
O/H
Processor
Transport
Overhead
Insert
Path
Overhead
Insert
Tx
Line O/H
Processor
Rx
Line O/H
Processor
Tx
Path
O/H
Processor
Rx
Path
O/H
Processor
Transport
Overhead
Extract
Path
Overhead
Extract
JTAG Test
Access Port
Tx ATM
Cell
Processor
Rx ATM
Cell
Processor
Tx ATM
4 Cell
FIFO
Rx ATM
4 Cell
FIFO
Drop
Side/
I/F
Microprocessor
I/F
TSOC
TDAT[15:0]
TCA
TWRB
RSOC
RDAT[15:0]
RCA
RRDB
PMC-920524 (R8)
© 1997 PMC-Sierra, Inc.. March, 1997