- 您现在的位置：买卖IC网 > PDF目录369885 > LXT386LE PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC PDF资料下载
参数资料
| 型号： | LXT386LE |
| 英文描述： | PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
| 中文描述： | 的PCM收发器|四|优税PCM-30/E-1 |的CMOS | QFP封装| 100引脚|塑料 |
| 文件页数： | 26/80页 |
| 文件大小： | 1112K |
| 代理商： | LXT386LE |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页
LXT384
—
Octal T1/E1/J1 Transceiver
26
Datasheet
Each output driver is supplied by a separate power supply (TVCC and TGND). The transmit pulse
shaper is bypassed if no MCLK is supplied while TCLK is pulled High. In this case TPOS and
TNEG control the pulse width and polarity on TTIP and TRING. With MCLK supplied and TCLK
pulled High, the driver enters TAOS (Transmit All Ones pattern). Note: the TAOS generator uses
MCLK as a timing reference. In order to assure that the output frequency is within specification
limits, MCLK must have the applicable stability. TAOS is inhibited during Remote Loopback.
2.3.1
Transmit Pulse Shaping
The transmitted pulse shape is internally generated using a high speed D/A converter. Shaped
pulses are further applied to the line driver for transmission onto the line at TTIP and TRING. The
line driver provides a constant low output impedance regardless of whether it is driving marks,
spaces or if it is in transition. This well controlled dynamic impedance provides excellent return
loss when used with external precision resistors (± 1% accuracy) in series with the transformer.
2.3.1.1
Hardware Mode
In hardware mode, pins LEN0-2 determine the pulse shaping as described in
Table 2
. The LEN
settings also determine whether the operating mode is T1 or E1.
Note:
In hardware mode, all eight ports will share the same pulse shaping setting. Independent pulse
shaping for each channel is available in host mode.
2.3.1.2
Host Mode
In Host Mode, the contents of the Pulse Shaping Data Register (PSDAT) determines the shape of
pulse output at TTIP/TRING. Please refer to
Table 24
and
Table 25
.
Figure 5. 50% AMI Encoding
TTIP
TRING
1
0
1
Bit Cell
相关PDF资料 |
PDF描述 |
|---|---|
| LXT388LE | PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
| LXT400JE | Hermetically Sealed, 3.3V, High Speed, High CMR, Logic Gate Optocoupler |
| LXT6155LE | Telecomm/Datacomm |
| LXT6251A | ATM/SONET MAPPER|CMOS|QFP|208PIN|PLASTIC |
| LXT903PC | LAN Transceiver |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LXT388LE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
| LXT400 | 制造商:LVL1 制造商全称:LVL1 功能描述:All Rate Extended Range Switched 56/DDS Transceiver |
| LXT400JE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver Circuit For Telecommunications |
| LXT441 | 制造商:LVL1 制造商全称:LVL1 功能描述:Switched 56/DDS Integrated DSU/CSU |
| LXT6155 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:155 Mbps SDH/SONET/ATM Transceiver |
发布紧急采购，3分钟左右您将得到回复。