PM5345
Summary Information
S/UNI-155
SATURN USER NETWORK INTERFACE
鈥?Monolithic SATURN鈩?SONET/SDH
Asynchronous Transfer Mode User
Network LAN Interface.
鈥?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.
FEATURES
鈥?Provides 4 cell deep FIFO buffers in
both transmit and receive paths and
provides interface circuitry for
external FIFO expansion.
鈥?Expansion ports provides access to
all overhead to allow external
processing for full SONET/SDH
Network-Node Interface (NNI)
compliance.
鈥?Provides a generic 8-bit
microprocessor bus interface for
configuration, control and status
monitoring.
circuits and pseudo-ECL interfaces
operating at the155 Mbit/s line rate.
鈥?Provides TTL compatible inputs and
outputs and a pseudo-ECL
compatible serial line side interface.
鈥?Low power, +5 Volt CMOS
technology.
鈥?160 pin plastic quad flat pack (PQFP)
package.
鈥?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.
鈥?Provides on-chip parallel-to-serial
and serial-to-parallel conversion
鈥?ATM LAN interfaces for computers,
workstations, switches and PCs
APPLICATIONS
鈥?ATM public network switching system
interfaces
鈥?B-ISDN User-Network Interfaces
鈥?Gigabit network interfaces
鈥?B-ISDN test equipment interfaces
鈥?Provides a standard 5-signal
P1149.1 JTAG test port for boundary
scan board test purposes.
BLOCK DIAGRAM
Line Side
TTOH
TTOHFP
TTOHCLK
TTOHEN
TPOH
TPOHFP
TPOHCLK
TPOHEN
TFP
TPAIS
TPYEL
TCLK
System Side
TFERF
TXCI+/-
TXCO+/-
TXD+/-
Par/
Ser
Transport
Overhead
Insert
Tx
Section
O/H
Processor
Rx
Section
O/H
Processor
Path
Overhead
Insert
Tx
Path
O/H
Processor
Rx
Path
O/H
Processor
Path
Overhead
Extract
TDO
TDI
TCK
TMS
TRSTB
JTAG Test
Access Port
TLAIS
VT1
VT2
TSER
FPOUT
POUT[7:0]
POCLK
OOF
PICLK
FPIN
FPOS
PIN[7:0]
Tx
Line O/H
Processor
Tx ATM
Cell
Processor
Tx ATM
4 Cell
FIFO
Drop
Side/
I/F
Line
Side
I/F
TSOC
TDAT[15:0]
TCA
TWRB
RSOC
RDAT[15:0]
RCA
RRDB
Rx
Line O/H
Processor
Rx ATM
Cell
Processor
Rx ATM
4 Cell
FIFO
RXC+/-
RXD+/-
Ser/
Par
Transport
Overhead
Extract
Microprocessor
I/F
RTOH
RTOHFP
RTOHCLK
RPOH
RPOHFP
RPOHCLK
LOP
PAIS
PYEL
RCLK
RSER
D[7:0]
A[7:0]
ALE
CSB
WRB
RDB
RSTB
INTB
GPIN
LOS
LOF
LAIS
FERF
PMC-920524 (R8)
漏 1997 PMC-Sierra, Inc.. March, 1997
BUS8
TSEN
1
2
