PMC PM8313 Datasheet

PMC-Sierra,Inc.

M13 Multiplexer/Demultiplexer

PM8313

D3MX

FEATURES

• Integrates a complete M13 multiplexer/
demultiplexer in a single monolithic
device.

• Integral framer supports the M23 or C­bit parity DS3 format with path
maintenance datalink processing and
bit-orie nted code support for Far-End
Alarm and Control (FEAC) channel
termination.

• Supports either the M12 or the G.747
formats to allow DS1 or E1 signals to
be multiplexed into a DS3 signal.

• Allows the M12 stages to b e b yp ass ed
allowing direct input of DS2 signals.

• Generates an interrupt upon detection
of various a larms, events, or changes
in status. Identification of interrupt
sources, masking of interrupt sources,
and acknowledgement of interrupts is
provided via internal registers.

• Application-compatible with the
PM4351 COMET T1 Transceiver,
PM4341A T1XC T1 Transceiver,
PM4344 TQUAD Quad T1 Framer,
PM4388 TOCTL Octal T1 Framer,
PM6341 E1XC E1 Transceiver,
PM6344 EQUAD Quad E1 Framer,
PM6388 EOCTL Octal E1 Framer,
PM4314 QDSX Quad E1/T1 LIU, and
the PM7344 S/UNI

®

-MPH.

• Provides a generic 8-bit
microprocessor interface for
configuration, control, and status
monitoring.

• Low power 5 V CMOS technology.

• Available in a high density (28 by

28 mm) 208-pin Plastic Quad Flat
Pack (PQFP) package.

DS3 FRAMER SECTION

• Detects/inserts DS3 Alarm Indication
Signal (AIS) and Idle signal - operates
correctly in the presence of 10-3 Bit
Error Ratio (BER).

• Extracts/inserts t he X, P,M, F,C an d th e
stuff opportunity bits and serializes for
optional external processing.

• Extracts/inserts the C-bit parity mode
path maintenance datalink and
serializes for optional external
processing.

• Extracts/inserts the C-bit parity bit­oriented codes in the FEAC channel.

• Detects and accumulates EXcessive
Zeros (EXZ), Loss Of Signal (LOS),
Line Code Violations (LCVs) P-bit,
F-bit, or M-bit errors, C-bit parity errors
and Far-End Block Errors (FEBEs).

• Supports DS3 line loopback and DS3
diagnostic loopba ck mod es to ass ist in
fault isolation.

M23 AND M12 MULTIPLEX/ DEMULTIPLEX SECTIONS

• Supports combination of four DS1 bit
streams or the combination of three E1
bit streams per G.747 into a single
M12 stream.

• Supports per-DS2 payload loopback
requests via C-bits or microprocessor
control.

• Accumulates DS2 M-bit, F-bit, and
G.747 framing bit/word error events.

• Supports DS2 AIS assertion based on
DS3 LOF, or under microprocessor
control.

• Supports DS2 tributary AIS activation/
deactivation in either directi on und er
microprocessor control.

• Inserts/detects per-DS1 payload
loopback requests transmitted via
C-bits.

APPLICATIONS

• M23 or C-Bit Parity Format DS1 to
DS3 Mux/Demux Equipment

• Fractional T3 Access E quipment

• DS2-to-DS3 Mux/Demux Equipment

• DS1-to-DS3 Mux/Demux Equipment

Supporting G.747 Tributary Format

BLOCK DIAGRAM

TDLEOMI

TDLCLK/TDLINT

TDLSIG/TDLUDR

XBOC

Transmit

FEAC

TCLK

TPOS/TDAT

TNEG/TMFP

RCLK/VCLK

RPOS/RDAT

RNEG/RLCV

PMC-920522 (R10) © 1998 PMC-Sierra, Inc. October, 1998

B3ZS

Decode

B3ZS

Decode

RBOC

Receive

FEAC

XFDL

Transmit

HDLC

RFDL

Receive

HDLC

RDLCLK/RDLINT

TRAN

DS3 Transmit

Framer

FRMR

DS3 Receive

Framer

RDLSIG/RDLEOM

TOH

PMON

Perfor­mance

Monitor

Counters

TOHCLK

Tx

O/H

Access

ROCLK, RODAT,

RMFP, RMSFP,

TIMFP

Rx

O/H

Access

ROHP, ROHCLK

TOHFP

TICLK

RAIS, ROOF/

RLOS, REXZ,

ROHFP, ROH,

RRED, RFERF

TOHEN

MUX/DEMUX

Microprocessor

A[7:0]

D[7:0]

A8/TRS

GD2CLK

MX23

M23

MPIF

Interface

ALE

CSB

#1

TD1CLK4
TD1DAT4

MX12

M12

MUX/

DEMUX

DS2

FRMR

Framer

One of seven M12

#2 - #7

Remaining Six M12

RDB

INTB

WRB

RSTB

TD2CLK

RD1DAT[3:1]
RD1CLK[3:1]

RD1CLK[3:1]
RD1DAT[3:1]

RD1CLK4
RD1DAT4

TD1CLK[28:5]
TD1DAT[28:5]
RD1CLK[28:5]
RD1DAT[28:5]

M13 Multiplexer/Demultiplexer

TYPICAL APPLICATIONS

DS3 TERMINAL MULTIPLEXER OR DIGITAL CROSS-CONNECT

DS3
Line

Interface Unit

(LIU)

M13 Multiplexer/Demultiplexer

PM8313

'0;

PM4388

TOCTL

Octal T1 Framer

PM4388

TOCTL

Octal T1 Framer

PM4388

TOCTL

Octal T1 Framer

PM4388

TOCTL

Octal T1 Framer

PM8313 D3MX

Synchronous

DS0

Backplane

HYBRID MULTIPLEXER-28xDS1 (ANSI FORMAT) OR 21xE1 (ITU G.747 FORMAT) TO DS3

Head Office:
PMC-Sierra, Inc.
#105 - 8555 Baxter Place
Burnaby, B.C. V5A 4V7
Canada
Tel: [phone]
Fax: [phone]

To order documentation,
send email to:
[e-mail]
or contact the head office,
Attn: Document Coordinator

All product documentation is available
on our web site at:
http://www.pmc-sierra.com
For corpo rate information,
send email to:
[e-mail]

PMC-920522 (R10)
© 1998 PMC-Sierra, Inc.
October, 1998
S/UNI is a registered
trademark of PMC-Sierra,

Inc.