參數(shù)資料
型號： CN8223EPF
英文描述： ATM/SONET TRANSCEIVER|CMOS|QFP|160PIN|PLASTIC
中文描述： 的ATM / SONET的收發(fā)器|的CMOS | QFP封裝| 160PIN |塑料
文件頁數(shù)： 1/161頁
文件大?。?/td> 1865K
代理商： CN8223EPF
Data Sheet
100046D
June 2000
8
Data
Bus
Port
Control
8
8
UTOPIA
or FIFO
Interface
Cell
FIFO
4-Port
FIFO
Interface
Microprocessor
Interface
52 Control Registers
28 Status Registors
Microprocessor
Address
Microprocessor
Data
Line Overhead
7
8
8
8
8
8
8
8
16
HDLC
Data
Link
Cell
Generation
TX
Rate
Control
Header
Filter
Cell
Validation
Cell
Alignment
HEC or
PLCP
DS3
E3 (G.751)
E3 (G.832)
STS-1
E4 (G.832)
STS-3c
STM-1
TAXI
Framers
1
1
ATM Layer
Physical Framing
ATM
UNI
CN8223
ATM Transmitter/Receiver with UTOPIA Interface
The CN8223 ATM Transmitter/Receiver with UTOPIA Level 1 interface provides a
single-access ATM service termination for User-to-Network (UNI) and
Network-to-Network Interfacing (NNI) in conformance with ATM Forum UNI and NNI
Specification 94/0317; Bellcore Specifications TR-TSV-000772, TR-TSV-000773,
TR-NWT-000253, and T1S1/92-185; ITU Recommendations I.432, G.707, G.751,
G.832, and Q.921; and ETSI prETS 300 213 and 300 214. Both Customer Premise
Equipment (CPE) and switching system interface functions are provided. The CN8223
provides DS1, E1, DS3, E3, E4, STS-1, and STS-3c (and STM-1) ATM cell alignment
functions. The system interface is via a parallel FIFO port or UTOPIA interface. In
addition, the CN8223 terminates the operations and maintenance flows F1, F2, and F3.
The CN8223 provides four FIFO port interfaces and one UTOPIA interface. Each
receiver port can be programmed with a particular Virtual Channel Identifier/Virtual
Path Identifier (VCI/VPI) address for message routing. VCI/VPI pages can also be
selected via masking registers.
The microprocessor can set control registers for insertion of selected header fields
by the transmitter on an individual port basis. The microprocessor can also control
insertion of all overhead and can insert errors in selected fields for test equipment
applications.
Functional Block Diagram
Distinguishing Features
Integrates 7 line framers with ATM
layer processing according to ATM
Forum UNI and NNI Specifications
UTOPIA Level 1 interface
Internal framers for DS3, E3 (G.751,
G.832), E4 (G.832), STS-1, STS-3c,
STM-1
PLCP and G.804 HEC cell alignment
for all data rates from 1.544 Mbps to
155 Mbps
Direct interface to TAXI
TM
or external
T1/E1 framers
ATM and SMDS cell modes
4 FIFO ports with header screening,
formatting, and transmit priority
controls
Idle cells generated and screened
Statistics counts latched on
one-second intervals
Error detection and insertion
Option insertion or generation of all
line and cell overhead
Serial or parallel line interface
Available evaluation module
reference design and software
Supports Automatic Protection
Switching (APS)
Applications
WAN equipment
ATM switches
Test equipment
ATM routers and hub
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