PMC-1971264 (R4)

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

 2001 PMC-Sierra, Inc.

PM8315

High Density T1/E1 Framer with Integrated VT/TU Mapper and M13 Mux

TEMUX

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-

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.

BLOCK DIAGRAM

DS3

Framer

with

PRBS

DS3

DS3

Clock and Data

M13

Multiplexer

Scaleable Bandwidth

Interconnect Bus

19.44 MHz

RJAT

PMON

TJAT

PRBS

T1/E1

Framer

T1/E1

Transmitter

28xT1/21xE1

Clock and Data

Telecom

Bus

19.44 MHz

Mapper

and

Telecom

Bus I/F

28xT1/21xE1

On 7 H-MVIP buses