Released
PM5309
TBS 2488
Multi-rate Telecom Backplane SERDES for 2.5 Gbit/s Interconnect
FEATURES
鈥?High performance backplane interface
and cross-connect for 2.5G line cards in
SONET/SDH systems.
鈥?Provides one low-speed parallel
TelecomBus interface operating at
32 bits x 77.76 MHz.
鈥?Provides three high-speed multi-rate
serial backplane interfaces.
鈥?Supports CLOS and memory-based
switch fabric systems.
鈥?Supports linear, UPSR, and BLSR
protection strategies.
鈥?Provides two pages of connection
memory with software and hardware
controlled hitless page swaps at frame
boundaries.
鈥?Provides integrated delay management
that allows for arbitrary SONET/SDH
frame alignments on each ingress serial
link.
鈥?High-speed serial RASIO compatible
with CML, LVDS, and LVPECL.
鈥?Supports nibble and di-bit slicing on
622 Mbit/s links for sliced switching
architectures.
PARALLEL PORT FUNCTIONS
鈥?Supports one 32-bit or four 8-bit
77.76 MHz TelecomBus interfaces to
SERIAL PORT FUNCTIONS
interface with parallel TelecomBus
鈥?Supports three RASIO 3G high-speed
framers and mappers.
serial backplane interfaces for interfacing 鈥?Integrated pointer interpreter reduces
with SONET/SDH cross-connects,
complexity of external framers and
framers, mappers, and other
mappers by asserting payload, J0, and
TBS鈩?2488 devices.
J1 indications on the outgoing
SWITCHING CAPACITY
鈥?Each high-speed serial backplane
TelecomBus interface.
鈥?Implements a 10G memory switch fabric
interface is capable of independent
鈥?Allows insertion and extraction of TOH
with STS-1/AU-3 switching granularity in
operation at 4x622 Mbit/s scrambled
bytes through a dedicated low speed
a single device.
NRZ SONET/SDH, 4x777 Mbit/s Serial
serial interface.
鈥?Supports non-blocking anycast switching
TelecomBus, or 1x2488 Mbit/s
between any of the serial or parallel
scrambled NRZ SONET/SDH.
interfaces.
BLOCK DIAGRAM
RxP1[4:1]
RxN1[4:1]
Rx RASIO
ESSI
Link
Framing &
Monitoring
Pointer
Interpreter
& Delay
Mgmt
ESSI
Link
Generator
Tx
RASIO
TxP1[4:1]
TxN1[4:1]
RxP2[4:1]
RxN2[4:1]
Rx RASIO
STS-1 / AU-3
Cross-Connect
ESSI
Link
Framing &
Monitoring
Pointer
Interpreter
& Delay
Mgmt
ESSI
Link
Generator
Tx
RASIO
TxP2[4:1]
TxN2[4:1]
RxP3[4:1]
RxN3[4:1]
Rx RASIO
ESSI
Link
Framing &
Monitoring
Pointer
Interpreter
& Delay
Mgmt
Connection
Memory and
Control
ESSI
Link
Generator
Tx
RASIO
TxP3[4:1]
TxN3[4:1]
Parallel Interface
TelecomBus
Monitor &
Byte
Interleave
Parallel Interface
SYSCLK
OD[4:1][7:0]
ODP[4:1]
OPL[4:1]
OJ0J1[4:1]
OPAIS[4:1]
TelecomBus
Signal
Generator &
Byte De-
Interleave
OD[4:1][7:0]
ODP[4:1]
OPL[4:1]
OJ0J1[4:1]
OPAIS[4:1]
ITOHFP
ITOHCLK
ITOHD
ITOHEN
Overhead
Insert
JTAG
Interface
Microprocessor
Interface
CSU (3)
Overhead
Extract
OTOHD
OTOHFP
OTOHCLK
CMP[4:1]
REFCLKP[3:1]
REFCLKN[3:1]
PMC-2021208 (R4)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS鈥?INTERNAL USE
SREFCLK[3:1]
TRSTB
TCK
TMS
TDI
TDO
A[11:0]
D[15:0]
RSTB
CSB
WRB
RDB
ALE
INTB
RJ0FP
漏 Copyright PMC-Sierra, Inc. 2005
1
2
