CX28333 Datasheet PDF - Conexant Systems
Part Number | CX28333 | |
Description | (CX28331 - CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit | |
Manufacturers | Conexant Systems | |
Logo | ||
There is a preview and CX28333 download ( pdf file ) link at the bottom of this page. Total 30 Pages |
Preview 1 page No Preview Available ! Advance Information
This document contains information on a product under development. The parametric information
contains target parameters that are subject to change.
CX28331/CX28332/CX28333
Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit
The CX28333 is a three-channel, E3/DS3/STS-1 fully-integrated Line Interface Unit
(LIU). It is configured via external pins and does not need a microprocessor interface.
Each channel has an independent equalizer on the receive side requiring no user
configuration. Also, each channel has a programmable transmit pulse shaper that can
be set to ensure that the cross-connect pulse mask requirement is met for transmit
cable length up to 450 feet. The CX28332 is a dual-channel, and the CX28331 is a
single-channel LIU with performance identical to the CX28333.
The CX28333 gives the user new economies of scale in concentrator applications
where three DS3 or STS-1 channels are concentrated into a single STS-3 channel. By
including three independent transceivers on a chip, significant external components are
eliminated, with the exception of 1:1 coupling transformers, termination resistors, and
supply bypass capacitors.
NOTE: In this document, "i" is used to represent the number of channels:
i = 1 (CX28331), i = 2 (CX28332), and i = 3 (CX28333).
Functional Block Diagram
XOE
LBO
E3MODE
PDB
TPOS
TNEG
TCLK
TAIS
RLOOP
LLOOP
RPOS
RNEG
RCLK
RLOS
PDATA/
NDATA
ENCODER
TCLK
Pulse
Shaper
DATA
MUX
LINE
DRIVER
TX
Monitor
DECODER
PDATA
NDATA
Clock/
Data
DATCLK Recovery
P
N Receiver
ALOS
TLINEP
TLINEM/N
TMONP
TMONM
TXMON
TMONTST
REFCLK
RLINEP
RLINEM/N
REQH
LIU #1
LIU #2
LIU #3
Distinguishing Features
• Can be used as a data transceiver
over a maximum of 900 feet of Type
734/728 coaxial cable or equivalent
in an on-premise environment
• Programmable pulse filtering to meet
cross-connect pulse masks (ANSI
T1.102-1993)
• Meets jitter specifications of Bellcore
GR499, GR253, and TBR24 (with
external JAT).
• Large input dynamic range
• Alarms for coding violation and loss
of signal
• Full diagnostic loopback capability
• Uses a minimum of external
components
• Compatible with ITU-T G.703, G.823
• Independent power down mode per
channel
• Easily interfaced to the DS3/E3
Framer IC (CX28342/3/4/6/8 and
CN8330)
• Selectable B3ZS/HDB3
encoding/decoding
• Superior input receiver sensitivity
(< 25 mV)
• Transmit monitor inputs (CX2833i-3x
series only)
Physical Characteristics
• 80- and 100-pin ETQFP package
• Single 3.3 V power supply
• 1 W maximum power dissipation
(CX28333)
• –40 °C to +85 °C temperature range
• 5 V-tolerant pins
• TTL digital pins
Applications
• Digital Cross-Connect Systems
• Routers
• ATM Switches
• Channelized Line Aggregation Units
• Test Equipment
• Channel Service Units
• Multiplexers
NOTE(S): The TX Monitor is only used with the 100-pin CX2833i-3X.
Data Sheet
100985A
June 2, 2000
|
|
Table of Contents
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
1.0 Pin Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1 Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2.0 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1 Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.1 AMI B3ZS/HDB3 Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.2 Pulse Shaper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2.3 Line Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.2.3.1 Transmit Pulse Mask Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.2.4 Alarm Indication Signal (AIS) Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.2.5 Transmit Monitor Block (CX2833i-3x Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
2.2.6 Jitter Generation (Intrinsic). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
2.3 Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.1 Receive Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.2 AGC/VGA Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.3 Receive Equalizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.3.4 The PLL Clock Recovery Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.3.5 Loss Of Signal (LOS) Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.3.6 B3ZS/HDB3 Decoder With Bipolar Violation Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
2.3.7 Data Squelching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.4 Jitter Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
2.4.1 Jitter Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
2.5 Additional CX28331/CX28332/CX28333 Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.5.1 Bias Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.5.2 Power-On Reset (POR). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.5.3 Loopback Multiplexers (MUXes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16
2.6 Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
2.7 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
100985A
Conexant
v
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for CX28333 electronic component. |
Information | Total 30 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ CX28333.PDF Datasheet ] |
Share Link :
Electronic Components Distributor
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
Part Number | Description | MFRS |
CX28331 | The function is (CX28332 / CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit. Conexant | |
CX28332 | The function is (CX28331 - CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit. Conexant Systems | |
CX28333 | The function is (CX28331 - CX28333) Single/Dual/Triple E3/DS3/STS-1 Line Interface Unit. Conexant Systems | |
Semiconductors commonly used in industry:
1N4148 |  
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
CX28
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA |