CX28398 반도체 회로 부품 판매점
(CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
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 Conexant Systems |
CX28394/28395/28398
Quad/x16/Octal—T1/E1/J1 Framers
The CX28394/28395/28398 is a family of multiple framers for T1/E1/J1 and Integrated
Service Digital Network (ISDN) primary rate interfaces operating at 1.544 Mbps or 2.048
Mbps. All framers are totally independent, and each combines a sophisticated framing
synchronizer and transmit/receive slip buffers. Operations are controlled through a
series of memory-mapped registers accessible via a parallel microprocessor port.
Extensive register support is provided for alarm and error monitoring, signaling
supervision (including ISDN D-channel/SS7 process), per-channel trunk conditioning,
and Facility Data Link (FDL) maintenance. A flexible serial Time Division Multiplexed
(TDM) system interface that supports bus rates from 1.536 to 8.192 MHz is featured.
Extensive test and diagnostic functions include a full set of loopbacks, Pseudo Random
Bit Sequence (PRBS) test pattern generation, Bit Error Rate (BER) meter, and forced
error insertion.
Functional Block Diagram
Receive
Dual Rail or
NRZ
Receive
Dual Rail or
NRZ
ZCS*
Decode
ZCS*
Encode
T1/E1
Receive
Framer
Overhead
Insertion
RX
Slip
Buffer
TX
Slip
Buffer
T1/E1
Transmit
Framer
Receive
System
Bus
Transmit
System
Bus
Distinguishing Features
• Up to 16 T1/E1/J1 Framers in one
package
• Extensive support of various
protocols
• T1: SF, ESF, SLC®96, T1DM,
TTC JT(J1)
• E1: PCM-30, G.704, G.706, G.732,
ISDN primary rate (ETS300 011,
INS 500)
• Extracts and inserts signaling bits
• Dual HDLC controllers per framer for
data link and LAPD/SS7 signaling
• Two-frame transmit and receive PCM
slip buffers
• Separate or multiplexed system bus
interfaces
• Parallel 8-bit microprocessor port
supports Intel or Motorola buses
• BERT generation and counting
• B8ZS/HDB3/Bit 7 zero suppression
(CX28394 and CX28398 only)
• Operates from a single +3.3 Vdc
± 5% power supply
• Low-power CMOS technology
Applications
Data Link Controllers
DL1+DL2
... Framer #1
Framer #N
JTAG
Test Port
* CX28394 and CX28398 only.
External Data Link
DL3*
Control/Status
Registers
Motorola/Intel
Processor Bus
Framer #N
CX28394 - 4 Frames
CX28398 - 8 Frames
CX28395 - 16 Frames
• Multiline T1/E1 Channel Service
Unit/Data Service Unit (CSU/DSU)
• Digital Access Cross-Connect
System (DACS)
• T1/E1 Multiplexer (MUX)
• PBXs and PCM channel bank
• ISDN Primary Rate Access (PRA)
• Frame Relay Switches and Access
Devices (FRADS)
• SONET/SDH add/drop multiplexers
• T3/E3 channelized access
concentrators
Data Sheet
100054E
June 2000
CX28398EVM—Evaluation Module, Octal T1/E1 ISDN PRI Board
T1 or E1 Connection at DSX Levels
Microprocessor
Address
Bus
12
Data
Bus
8
Quad T1/E1 LIU (CX28380)
Quad T1/E1 LIU (CX28380)
CX28398 (Octal T1/E1 Framer)
Local PCM Highway (i.e., 2 @ 8192 kbps)
© 1999, 2000, Conexant Systems, Inc.
All Rights Reserved.
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100054E
Conexant
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관련 데이터시트
CX28394
(CX28395 / CX28398) Quad/x16/Octal?T1/E1/J1 Framers - Conexant
CX28395
(CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers - Conexant Systems
CX28398
(CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers - Conexant Systems