PM8315 Datasheet, PDF (1/2 Pages) PMC-Sierra, Inc – HIGH DENSITY T1/E1 FRAMER WITH INTEGRATED VT/TU MAPPER AND M13 MULTIPLEXER

PM8315
TEMUX
High Density T1/E1 Framer with Integrated VT/TU Mapper and M13 Mux
FEATURES
• Monolithic device which integrates 28
T1 framers, 21 E1 framers, a SONET/
SDH VT1.5/V2/TU-11/TU-12 bit asyn-
chronous mapper, a full featured M13
multiplexer with DS-3 framer, and a
SONET/SDH DS-3 mapper for term-
inating DS-3 multiplexed T1 streams,
SONET/SDH mapped T1 streams or
SONET/SDH mapped E1 streams.
• Seven T1 modes of operation:
1. Up to 28 T1 streams mapped as
bit asynchronous VT1.5 virtual
tributaries into a STS-1 SPE or
TU-11 tributary units into a
STM-1/VC3 or TUG3 from a
STM-1/VC4.
2. Single STS-1, AU3 or TUG3 Bit
Asynchronous VT1.5 or TU-11
Mapper with ingress or egress
link monitoring per T1 tributary.
3. Up to 28 T1 streams M13 multi-
plexed into a serial DS-3.
4. Up to 28 T1 streams M13 multi-
plexed into a DS-3; the DS-3 is
asynchronously mapped into a
STS-1/STM-2/STM-0 SPE.
5. DS-3 M13 Multiplexer with
ingress or egress link monitor-
ing per T1 tributary.
6. Up to 28 DS-3 multiplexed T1
streams are mapped as bit
asynchronous VT1.5 virtual trib-
BLOCK DIAGRAM
utaries or TU-11 tributary units,
providing a transmultiplexing
function between DS-3 and
SONET/SDH.
7. Up to 21 T1 streams mapped as
bit asynchronous VT2 virtual
tributaries into a STS-1 SPE or
TU-12 tributary units into a
STM-1/VC3 or TUG3 from a
STM-1/VC4.
• Two E1 modes of operation:
1. Up to 21 E1 streams mapped
as bit asynchrounous VT2 vir-
tual tributaries into a STS-1
SPE or TU-12 tributary units
into a STM-1/VC3 or TUG3
from a STM-1/VC4.
2. Single STS-1, AU3 or TUG3 Bit
Asynchronous VT2 or TU-12
Mapper with ingress or egress
per tributary link monitoring.
• Supports a byte serial Scalable
Bandwidth Interconnect (SBI™) bus
interface for high density system side
device interconnection of up to 84 T1
streams, 63 E1 streams, three DS-3
streams or three E3 streams.
• Up to 28 VT1.5/TU-11 or 21 VT2/TU-
12 tributaries can be passed as
transparent virtual tributaries (with
pointer processing) between the
SONET/SDH TelecomBus on the line
side and the SBI bus on the system
side.
• Supports transfer of PCM data to/from
1.544 MHz and 2.048 MHz system-
side devices. Also supports a fractional
T1 or E1 system interface with
independent ingress/egress Nx64 Kb/s
rates. Supports a 2.048 MHz system-
side interface for T1 mode without
external clock gapping.
• Supports 8 Mb/s MVIP on the system
interface for all T1 or E1 links, a
separate 8 Mb/s MVIP system
interface for all T1 or E1 CAS channels
and a separate 8 Mb/s MVIP system
interface for all T1 or E1 CCS and
V5.1/V5.2 channels.
• Supports the M23 and C-bit parity
DS-3 formats.
• Supports stand-alone unchannelized
DS-3 framer mode for access to the
entire DS-3 payload. When configured
to operate as a DS-3 Framer, gapped
transmit and receive clocks can be
optionally generated for interface to
link layer devices which only need
access to payload data bits.
• Provides an on-board programmable
binary pseudo-random sequence
generator and detector for error testing
at DS-3 rates and an on-board
pseudo-random binary sequence
generator and detector on each
tributary for error testing at DS1, E1 or
N*DS0 rates.
Telecom
Bus
19.44 MHz
Mapper
and
Telecom
Bus I/F
DS3
DS3
Framer
with
PRBS
M13
Multiplexer
T1/E1
Framer
RJAT
T1/E1
Transmitter
PMON
TJAT
PRBS
28xT1/21xE1
Clock and Data
28xT1/21xE1
On 7 H-MVIP buses
Scaleable Bandwidth
Interconnect Bus
19.44 MHz
DS3
Clock and Data
PMC-1971264 (R4)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
 2001 PMC-Sierra, Inc.