PM4351
Combined E1/T1/J1 Transceiver/Framer
COMET
PMC-1961230 (R3) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE © Copyright PMC-Sierra, Inc. 2001
FEATURES
• Monolithic 3.3 V device that integrates
an E1/T1/J1 Framer and line driver for
shorthaul and longhaul applications.
• Software selectable between T1/J1
and E1 operation on a per device
basis.
• Provides fully programmable shorthaul
and longhaul pulse templates and line
build out.
• Meets or exceeds T1, J1, and E1
shorthaul and longhaul network access
specifications, which include:
ANSI T1.102, T1.403, T1.408, AT&T
TR 62411, ITU-T G.703 and G.823, as
well as the newer G.775 and
ETSI 300-011 specifications.
• Supports B8ZS, HDB3, and AMI line
codes.
• Provides receive clock recovery and
line performance monitoring.
• Provides on-board binary sequence
generators and detectors that can be
configured with various patterns for
error testing, including those
conforming to ITU-T 0.151.
• Provides transmit and receive jitter
attenuation.
• Provides three full-featured HDLC
controllers, each with 128-byte
transmit and receive FIFOs, enabling
dual compliance to the V5.1 and V5.2
interface standards.
• Supports an IEEE P1149.1 JTAG test
port.
• Automatically generates DS1
performance report messages to ANSI
T1.231 and other specifications.
• Compatible with Mitel ST
-bus, AT&T
CHI
, and MVIP PCM backplanes
supporting rates of 1.544 Mbit/s,
2.048 Mbit/s, 4.096 Mbit/s and
8.192 Mbit/s.
• Provides an 8-bit microprocessor bus
interface for configuration, control, and
status monitoring.
• Low power +3.3 V CMOS technology.
• Available in an 80-pin PQFP (14 mm
by 14 mm) and an 81-pin CABGA (9
mm by 9 mm) package.
• Provides a -40 °C to +85 °C industrial
temperature operating range.
RECEIVE
• Provides single-rail digital PCM and
signaling outputs for 1.544 Mbit/s,
2.048 Mbit/s, 4.096 Mbit/s, or
8.192 Mbit/s backplane buses.
• Guaranteed signal recovery of up to
-36 dB at 1024 kHz (E1) and 772 kHz
(T1/J1) under production test
conditions (VDD = 3.069 V, 25 °C)
using PIC-22 gauge cable emulation.
• Frames to a G.704 E1 signal.
• Frames to a JT-G704 J1 signal.
• Frames to a DSX/DS-1 signal in D4,
SF, ESF, or SLC
96 formats.
• Accommodates up to 0.4 UI peak-to-
peak, high frequency jitter as required
by AT&T TR 62411.
• Supports line and path performance
monitoring to AT&T and ANSI
specifications and ITU-T
recommendations.
• Detects both programmable in-band
loopback activate and deactivate code
sequences received in the DS1/E1
data stream.
TRANSMIT
• Supports transfer of transmitted PCM
and signaling data from 1.544 Mbit/s,
2.048 Mbit/s, 4.096 Mbit/s, or
8.192 Mbit/s backplane buses.
• Supports tristate line outputs.
• Generates DSX-1 T1 shorthaul- and
T1 longhaul-compatible pulses with
programmable pulse shape to AT&T
and ANSI specifications and ITU-T
recommendations.
• Generates G.703 E1 pulses.
• Detects violations of the ANSI T1.403
12.5% pulse density rule over a
moving 192-bit window.
• Allows insertion of in-band loopback
code sequences.
• Supports transmission of the Alarm
Indication Signal (AIS) or the yellow
alarm signal in all formats.
• Provides a FIFO for jitter attenuation in
the transmit path.
• Complies to all jitter attenuation, jitter
transfer and residual jitter
specifications required by AT&T TR
62411 and ETSI TBR12/13.
BLOCK DIAGRAM
RDLC #3
HDLC Receiver
TOPS
Timing Options
MPIF
Micro-
processor
Interface
D[7:0]
A[8:0]
RDB
WRB
CSB
ALE
RSTB
TDO
JTAG
Tes t
Access
Port
CSD
Clock Synthesis
and Distribution
RLPS
Receive
LIU
INTB
TDI
TCK
TMS
TRSTB
BTPCM
BTSIG
BTFP
BTCLK
BRCLK
BRFP
BRPCM
BRSIG
TDAT
TFP
TXTIP[1:0]
TXRING[1:0]
TVREF
TCLKO
XCLK /VCLK
TCLKI
RSYNC
RXTIP
RXRING
RDAT
RCLKI
RVREF
RX-ELST
Elastic
Store
TX-ELST
Elastic
Store
BTIF
Backplane
Transmit
Interface
FRMR
Frame
Alignment,
Alarm Extraction
FRAM
Framing
RAM
ALMI
Alarm
Integrator
BRIF
Bit-Oriented
Code Detector
IBCD
In-Band
Loopback Code
Detector
PMON
Performance
Monitor
Counters
PDVD
Pulse Density
Violation
Detector
RJAT
Receive
Digital Jitter
Attenuator
CDRC
Clock and Data
Recovery
XLPG
Transmit
LIU
FRMR
Frame
Alignment,
Alarm
Extraction
ALMI
Alarm
Integrator
IBCD
In-band
Loopback
Code
Detector
PMON
Performance
Monitor
Counters
XBOC
Bit-Oriented
Code
Generator
T1-XBAS/
E1-TRAN
Basic Transmitter:
Frame Generation,
Alarm Insertion,
Signaling Insertion,
Trunk Conditioning
RDLC #2
HDLC Receiver
RDLC #1
HDLC Receiver
RPSC
Per-DS0
Serial
Controller
PRGD
½ Pattern
Generator/
Detector
BRIF
Backplane
Receive
Interface
E1/T1-
SIGX
Signalling
Extractor
TDPR #3
HDLC Transmitter
TDPR #2
HDLC Transmitter
TDPR #1
HDLC Transmitter
TJAT
Transmit
Digital Jitter
Attenuator
