PM4325 Datasheet, PDF (1/2 Pages) PMC-Sierra, Inc – Octal Short Haul T1/E1/J1 Low Latency Transport Line Interface

PM4325
OCTLIU ST
Octal Short Haul T1/E1/J1 Low Latency Transport Line Interface
FEATURES
• Monolithic device integrating eight
T1/J1 or E1 short haul line interface
units.
• Software switchable between T1/J1
and E1 operation on a per-device
basis.
• Meets or exceeds T1/J1 and E1 short
haul network access specifications
including ANSI T1.102, T1.403,
T1.408, AT&T TR 62411, ITU-T G.703,
G.704 as well as ETSI 300-011, TBR
4, TBR 12, and TBR 13. In conjunction
with the TEMAP 84 (PM5366), allows
Add Drop Multiplexers and Terminal
Multiplexers to meet GR253, GR496,
and G.783.
• Optional encoding/decoding of B8ZS,
HDB3, and AMI line codes.
• Provides receive equalization, clock
recovery, and line performance
monitoring.
• Provides transmit and receive jitter
attenuation.
• Provides digitally programmable pulse
templates.
• Provides a selectable, per channel
independent de-jittered T1 or E1
recovered clock for system timing and
redundancy.
• Provides PRBS generators and
detectors on each tributary for error
testing at DS1 and E1 rates as
recommended in ITU-T O.151.
• Uses line rate system clock.
SYSTEM INTERFACE
• Supports transfer of transmitted single
rail PCM and signaling data from
1.544 Mbit/s and 2.048 Mbit/s
backplane buses or a SBI/SBI TR
interface for low pin count
interconnection of up to 11 OCTLIU
STs to the high-density PM5366
TEMAP 84 T1/E1 framer.
RECEIVE SECTION
• Supports T1/E1 signal reception for
distances with up to 12dB of cable
attenuation at nominal conditions using
PIC 22 gauge cable emulation.
• Supports G.772 compliant
non-intrusive protected monitoring
points.
• Recovers clock and data using a digital
phase locked loop for high jitter
tolerance.
• Tolerates more than 0.4 UI peak-to-
peak high frequency jitter as required
by AT&T TR 62411 and Bellcore
TR-TSY-000170.
• Outputs dual rail recovered line pulses,
a single rail DS-1/E1 signal, or parallel
data in SBI/SBI TR bus format.
• Performs B8ZS or AMI decoding when
processing a bipolar DS-1 signal and
HDB3 or AMI decoding when
processing a bipolar E1 signal.
• Detects line code violations (LCVs),
B8ZS/HDB3 line code signatures, and
four (E1), eight (T1+B8ZS), or sixteen
(T1 AMI) successive zeros.
• Provides a programmable depth FIFO
buffer for jitter attenuation, rate
conversion, and latency optimization in
the receive path.
TRANSMIT SECTION
• Generates DSX-1 short haul pulses
with programmable pulse shape
compatible with AT&T, ANSI, and ITU
requirements.
BLOCK DIAGRAM
TXTIP1[8:1]
TXTIP2[8:1]
TXRING1[8:1]
TXRING2[8:1]
RXTIP[8:1]
RXRING[8:1]
XLPG
Transmit LIU
RLPS
Receive LIU
TJAT
Digital Jitter
Attenuator
LCODE
AMI / B8ZS /
HDB3 Line
Encoder
(Diagnostic
Digital
Loopback)
(Line
Loopback)
CDRC
Clk/Data
Recovery
PMON
Performance
Monitor
PDVD
Pulse Density
Viol. Detector
XCLK
RSYNC
TXHIZ/LineLB
SBI_EN
RSTB
CSD
Clock
Synthesis /
Distribution
TOPS
Timing
Options
LOS
Serial
Output
JTAG
XPDE
Pulse Density
Enforcer
XIBC
Inband Loop-
back Code
Generator
IBCD
Inband Loop
back Code
Detector
PRBS
Pattern
Generator /
Detector
RJAT
Digital Jitter
Attenuator
LIU Octant x 8
uP Interface
H/W only
Auto-config
PISO
SBI TR
Extract
SBI
Extract
SBI
Insert
SIPO
SBI TR
Insert
TDN[8:1]
TDP[8:1]
TCLK[8:1]
DSYNC
DDATA[7:0]
DLINKRATE[5:0]
DPARITY
DALARM
DVALID
DFULL
DC1FP
DDATA[7:0]
DDP
DPL
DV5
REFCLK
C1FPOUT
ADATA[7:0]
ADP
APL
AV5
AACTIVE
AC1FP
ADATA[7:0]
ALINKRATE[5:0]
APARITY
AALARM
AVALID
ASYNC
RDP[8:1]
RDN/RLCV[8:1]
RCLK[8:1]
PMC-2030527 (R2)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
© Copyright PMC-Sierra, Inc. 2003