900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






PMC

PM4344 Datasheet Preview

PM4344 Datasheet

Quad T1 Framer

No Preview Available !

PMC-Sierra,Inc.
Quad T1 Framer
PM4344
TQUAD
FEATURES
• Monolithic single-chip device that
integrates four full-featured T1 framers
and transmitters for terminating duplex
DS1 signals.
• Supports SF, ESF, T1DM (DDS), and
SLC®96 format DS1 signals.
• Supports unframed mode. Supports
B8ZS or AMI line codes.
• Supports transfer of PCM and
signalling data to/from 1.544 Mbit/s,
2.048 Mbit/s, 12.352 Mbit/s, or
16.384 Mbit/s backplane buses.
• Supports n x DS0 backplane interface
for fractional T1.
• Provides robbed-bit signalling
extraction/insertion, programmable idle
and digital milliwatt code substitution,
and two superframes of signalling
debounce on a per-channel basis.
• Provides trunk conditioning which
forces programmable trouble code
substitution and signalling conditioning
on all/selected channels.
• Provides ESF bit-oriented code
detection/generation, and an HDLC
interface for terminating/generating the
ESF data link.
• Software and functionally compatible
with the PM4341A T1XC Single T1
Transceiver. Pin-compatible with the
PM6344 EQUAD Quad E1 Framer.
• Provides an 8-bit microprocessor bus
interface for configuration, control, and
status monitoring.
• Low power 5 V CMOS technology.
• Available in a rectangular 128-pin
PQFP (14 by 20 mm) package.
RECEIVE SECTION
• Recovers clock and data using a digital
PLL for high jitter tolerance.
• Accepts/provides dual- or single-rail
digital PCM inputs/outputs. Accepts
gapped data streams to support higher
rate demultiplexing.
• Provides Loss Of Signal (LOS)
detection, and red, yellow, and Alarm
Indication Signal (AIS) alarm detection.
• Detects violations of the ANSI T1.403
12.5% pulse density rule over a
moving 192-bit window.
• Provides programmable in-band
loopback code detection.
• Supports line and path performance
monitoring according to AT&T and
ANSI specifications. Accumulators are
provided for counting, ESF CRC-6
errors, Framing bit errors, Line Code
Violations (LCVs), and Loss Of Frame
(LOF) or change of frame alignment
events.
• Extracts the data link in ESF, T1DM
(DDS), or SLC®96 modes. Extracts
selected channels.
• Provides a 2-frame elastic store buffer
for jitter and wander attenuation.
TRANSMIT SECTION
• Optionally accepts/provides dual-rail
digital PCM inputs/outputs.
• Provides per-channel minimum ones
density through Bell (bit 7), GTE, DDS,
or “jammed bit 8" (56 Kbit/s) zero code
suppression.
• Detects violations of the ANSI T1.403
12.5% pulse density rule over a
moving 192-bit window.
• Allows insertion of framed or un-
framed in-band loopback code
sequences.
• Allows insertion of a data link in ESF,
T1DM (DDS) or SLC®96 modes.
Allows insertion of selected channels
through a serial port.
Supports transmission of the AIS or
the yellow alarm signal in all formats.
Provides a digital PLL for generation of
a low jitter transmit clock.
Provides a FIFO buffer for jitter
attenuation and transmit rate
conversion. FIFO full or empty
indication allows for bit-stuffing in
higher rate multiplexing applications.
APPLICATIONS
T1/T3 Multiplexers and Digital Private
Branch Exchanges (PBXs)
T1 Frame Relay Interfaces
T1 ATM Interfaces
Fractional T1 Interfaces
Digital Access and Cross-Connect
Systems (DACS) and Electronic DSX
Cross-Connect Systems (EDSXs)
Digital Loop Carriers (DLCs)
T1 Channel Service Units (CSUs) and
Data Service Units (DSUs)
ISDN Primary Rate Interfaces (PRIs)
SONET Add/Drop Multiplexers (ADMs)
BLOCK DIAGRAM
TCLK1[1:4]
BTPCM/
BTDP[1:4]/MTD*
BTSIG/BTDN[1:4]
BTFP[1:4]/MTFP*
BTCLK[1:4]/
MTCLK*
BTIF
Back-
plane
Transmit
Interface
XBAS
Basic Transmitter:
Frame Generation,
Alarm Insertion,
Trunk Conditioning,
Line Coding
TPSC
Per-channel
Controller:
Signal, Idle,
Zero Control
XIBC
In-band
Loopback
Code
Generator
XPDE
Pulse
Density
Enforcer
XBOC
Bit-oriented
Code
Generator
XFDL
HDLC
Transmitter
BRCLK*/MRCLK*
BRFPI*/MRFPI*
MENB*
XCLK/VCLK*
RCLK[1:4]
RDP/RDD[1:4]
RDN/RLCV[1:4]
DRIF
DS-1
Receive
Interface
CDRC
Clock and
Data
Recovery
PMON
Performance
Monitor
Counters
FRMR
Framer:
Frame
Alignment,
Alarm
Extraction
Transmitter
DTIF
Digital
Transmit
Interface
TCLKO[1:4]
TDP/TDD[1:4]
TDN/TFLG[1:4]
DJAT
Digital Jitter
Attenuator
TOPS
Timing
Options
TDLCLK/TDLUDR[1:4]
TDLSIG/TDLINT[1:4]
Receiver
ELST
Elastic
Store
SIGX
Signalling
Extractor
BRIF
Backplane
Receive
Interface
BRPCM/BRDP[1:4]
BRSIG/BRDN[1:4]
BRFPO[1:4]
MRD*
RCLKO[1:4]
RFP[1:4]
A[9:0]*
RDB*
WRB*
CSB*
ALE*
INTB*
RSTB*
Internal
Bus
MPIF
Micro-
processor
Interface
D[7:0]*
IBCD
In-band
Loopback
Code
Detector
PDVD
Pulse
Density
Violation
Detector
ALMI
Alarm
Integrator
FRAM
Framer/Slip
Buffer RAM
RPSC
Per-channel
Controller: Trunk
Conditioning
RBOC
Bit-oriented
Code
Detector
RFDL
HDLC
Receiver
* These signals are shared between all four framers.
RDLSIG/
RDLINT[1:4]
RDLCLK/
RDLEOM[1:4]
PMC-941030 (R7)
1998 PMC-Sierra, Inc. October, 1998




PMC

PM4344 Datasheet Preview

PM4344 Datasheet

Quad T1 Framer

No Preview Available !

Quad T1 Framer
TYPICAL APPLICATIONS
FULLY CHANNELIZED HDLC APPLICATION
PM4344 TQUAD
PM4314
4 QDSX
Quad
T1/E1 LIU
PM4344
TQUAD
Quad
T1 Framer
PM6344
EQUAD
Quad
E1 Framer
PM7366
FREEDM-8
Frame Engine and Datalink
Manager
Processor
Packet
Memory
PCI Bus
STRUCTURED/UNSTRUCTURED T1 AAL1 OCTAL PORT CARD
PM4314
4 QDSX
Quad
T1/E1 LIU
PM4314
4 QDSX
Quad
T1/E1 LIU
PM4344
TQUAD
Quad
T1 Framer
PM4344
TQUAD
Quad
T1 Framer
PM73121
AAL1gator II
AAL1
SAR Processor
UTOPIA Bus
Head Office:
PMC-Sierra, Inc.
#105 - 8555 Baxter Place
Burnaby, B.C. V5A 4V7
Canada
Tel: 604.415.6000
Fax: 604.415.6200
To order documentation,
send email to:
document@pmc-sierra.com
or contact the head office,
Attn: Document Coordinator
All product documentation is
available on our web site at:
http://www.pmc-sierra.com
For corporate information,
send email to:
info@pmc-sierra.com
PMC-941030 (R7)
1998 PMC-Sierra, Inc.
October, 1998
AAL1gator II and FREEDM-8 are
trademarks of PMC-Sierra, Inc.
SLC®96 is a registered trademark
of AT&T.


Part Number PM4344
Description Quad T1 Framer
Maker PMC
PDF Download

PM4344 Datasheet PDF






Similar Datasheet

1 PM4340.101NLT SMT Power Inductors
Pulse
2 PM4340.102NLT SMT Power Inductors
Pulse
3 PM4340.103NLT SMT Power Inductors
Pulse
4 PM4340.122NLT SMT Power Inductors
Pulse
5 PM4340.151NLT SMT Power Inductors
Pulse
6 PM4340.152NLT SMT Power Inductors
Pulse
7 PM4340.153NLT SMT Power Inductors
Pulse
8 PM4340.183NLT SMT Power Inductors
Pulse
9 PM4340.201NLT SMT Power Inductors
Pulse





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z



Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy