- 您現在的位置：買賣IC網 > PDF目錄376463 > XRT84L14 (Exar Corporation) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF資料下載
參數資料
| 型號： | XRT84L14 |
| 廠商： | Exar Corporation |
| 元件分類： | 通信及網絡 |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數： | 1/6頁 |
| 文件大?。?/td> | 91K |
| 代理商： | XRT84L14 |
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
á
PRODUCT BRIEF
XRT84L14
QUAD T1 FRAMER
OCTOBER 2000
REV. A1.0.0
GENERAL DESCRIPTION
The XRT84L14 quad T1/DS1 Framer is a single chip
device which integrates 4 T1 framers and transmitters
for terminating DS1 Signals. Each framer has its own
framing synchronizer and transmit-receive slip
bufffers, and can be independently enabled or dis-
abled as required and can be configured to frame to
the common DS1 signal formats
Each Framer block contains its own Transmit and Re-
ceive T1 Framing function. The Transmit HDLC con-
troller encapsulates contents of the Transmit HDLC
buffers into LAPD Message frames. The Receive
HDLC controller extracts payload content of Receive
LAPD Message frames from the incoming T1 data
stream and writes it into the Receive HDLC buffer.
Each framer also contains a Transmit and Overhead
Data Input port, which permits Data Link Terminal
Equipment direct access to the outbound T1 frames
Likewise, a Receive Overhead output data port per-
mits Data Link Terminal Equipment direct access to
the Data Link bits of the inbound T1 frames.
The XRT84L18 fully meets all of the latest T1 specifi-
cations: ANSI T1.403-1995, ANSI T1.231-1993,
AT&T TR62411 (12-90), AT&T TR54016 and
TR62411, and ITU G-703, G.704, G706 and G.733.
Extensive test and diagnostic functions include Loop-
backs, Boundary scan, Pseudo Random bit se-
quence (PRBS) test pattern generation, Performance
Monitor,
Bit Error Rate (BER) meter, and forced error
insertion.
FEATURES
Four independent, full duplex DS1 Tx and Rx
Framer
Two 512-bit (two-frame) elastic store, PCM frame
slip buffers (FIFO) on TX and Rx
Provides up to 8.192 MHz asynchronous back plane
connections with jitter and wander attenuation
Supports input PCM and signaling data from 1.544
to 8.192 MHz. Also supports 4-channel multiplexed
12.352/16.384 Mbit/s on the back plane bus
Programmable output clocks for Fractional T1
Supports channel associated signaling (CAS)
Supports Common-channel and ISDN Primary Rate
Interface (ISDN PRI) signaling
Integrated HDLC controller with two 96-byte Transmit
HDLC buffers and two 96-byte Receive HDLC buffers
Timeslot assignable HDLC
Programmable Interrupt output pin
Supports programmed I/O, Burst and DMA modes of
Read-Write access
Facilitates Inverse Multiplexing for ATM
Extracts and inserts robbed bit signaling (RBS)
F
IGURE
1. 84L14 S
YSTEM
D
IAGRAM
;57
;5
/
67
;57
;7
/
47
70
&+
#
7
42
(
4#
/,8
+RVW
#
0RGH
7[
4
5[
;
7326
71(*
7&/.
4
5326
51(*
5&/.
4
7[326
7[1(*
7[&/.
5[326
5[1(*
5[/LQH&/.
/RFDO
#
3&0
+LJKZD\
;#
'6
4#
&KDQQHOV
41877#
0+]
%DFN
#
3ODQH
418770 4916;7
0ELW
2
V
Configuration, Control &
Status Monitor
Tx Encoder
LIU
Interface
Performance
Monitor
LIU
&
Loopback
Control
Microprocessor
Interface
'>
:=3
@
$>
5=3
@
7
:5B5:
$/(B$6
5'6B'6
5G\B'WFN
&KDQQHO
6HOHFW
6
7
5[
4
7[
;
7
7
7
7
7
LB
LLB
HDLC (LAPD)
Controller &
96-byte Buffer
Rx Serial
Data Out
1 of 4-channels
Rx Overhead Out
7
7
,QWHUUXSW
2-Frame
Slip Buffer
Elastic Store
;#
N+]
#
V\QF
26&
Tx Overhead In
2-Frame
Slip Buffer
Elastic Store
7[
#
VHULDO
FORFN
5[
#
VHULDO
FORFN
Tx
Framer
PRBS
Generator
Analyser
&
Rx
Framer
External Data
Link Controller
Rx Encoder
LIU
Interface
Signaling
& Alarms
Tx Serial
Data In
μ
P
Interface
Line Side
System (Terminal) Side
S
DMA
Interface
Intel/Motorola
μ
P
Memory
7ZLVWHG
#
3DLU
7ZLVWHG
#
3DLU
JTAG
相關PDF資料 |
PDF描述 |
|---|---|
| XRT84L18 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38_06 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84L38IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT84V24 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| XRT84L38 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER |
| XRT84L38IB | 功能描述:網絡控制器與處理器 IC 8 Ch T1/E1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT84L38-L38PCI | 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT84L38-SL38PCI | 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
發布緊急采購，3分鐘左右您將得到回復。