- 您现在的位置：买卖IC网 > PDF目录9751 > DS3152N+ (Maxim Integrated Products)IC LIU DS3/E3/STS-1 144-CSBGA PDF资料下载
参数资料
| 型号： | DS3152N+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/61页 |
| 文件大小： | 0K |
| 描述： | IC LIU DS3/E3/STS-1 144-CSBGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 2/2 |
| 规程： | DS3 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-BGA，CSPBGA |
| 供应商设备封装： | 144-TECSBGA（13x13） |
| 包装： | 托盘 |
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页当前第18页第19页第20页第21页第22页第23页第24页第25页第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
DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
25 of 61
7. TRANSMITTER
Transmit Clock. The clock applied at the TCLK input clocks in data on the TPOS/TDAT and TNEG pins. If the jitter
attenuator is not enabled in the transmit path, the signal on TCLK is the transmit line clock and must be
transmission quality (i.e.,
±20ppm frequency accuracy and low jitter). If the jitter attenuator is enabled in the
transmit path, the signal on TCLK can be jittery and/or periodically gapped (not exceeding 8UI), but must still have
an average frequency within
±20ppm of the nominal line rate. When enabled in the transmit path, the jitter
attenuator generates the transmit line clock from the signal applied on the appropriate MCLK pin. The signal on the
MCLK pin must, therefore, be a transmission-quality clock (
±20ppm frequency accuracy and low jitter).
The polarity of TCLK can be inverted to support glueless interfacing to a variety of neighboring components.
Normally data is sampled on the TPOS/TDAT and TNEG pins on the rising edge of TCLK. To sample data on the
falling edge of TCLK, pull the TCINV pin high (hardware mode) or set the TCINV configuration bit (CPU bus mode).
Framer Interface Format and the B3ZS/HDB3 Encoder. Data to be transmitted can be input in either binary or
bipolar format. To select the binary interface format, pull the TBIN pin high (hardware mode) or set the TBIN
configuration bit (CPU bus mode). In binary format, the B3ZS/HBD3 encoder is enabled, and the data to be
transmitted is sampled on the TDAT pin. The TNEG pin is ignored in binary interface mode and should be wired
low. In DS3 and STS-1 modes, the B3ZS/HDB3 encoder operates in the B3ZS mode. In E3 mode the encoder
operates in HDB3 mode.
To select the bipolar interface format, pull the TBIN pin low (hardware mode) or clear the TBIN configuration bit
(CPU bus mode). In bipolar format, the B3ZS/HDB3 encoder is disabled and the data to be transmitted is sampled
on the TPOS and TNEG pins. Positive-polarity pulses are indicated by TPOS = 1, while negative-polarity pulses
are indicated by TNEG = 1.
Pattern Generation. The transmitter can generate several patterns internally, including unframed all ones (E3
AIS), 100100…, and DS3 AIS. See Figure 7-2 for the structure of the DS3 AIS signal. The TDSA and TDSB input
pins (hardware mode) or the TDSA and TDSB control bits (CPU bus mode) are used to select these patterns.
Table 4-F indicates the possible selections.
Waveshaping, Line Build-Out, Line Driver. The waveshaping block converts the transmit clock, positive data,
and negative data signals into a single AMI signal with the waveshape required for interfacing to DS3/E3/STS-1
lines. Table 7-A through Table 7-E and Figure 7-1 show the waveform template specifications and test parameters.
Because DS3 and STS-1 signals must meet the waveform templates at the cross-connect through any cable length
from 0 to 450ft, the waveshaping circuitry includes a selectable LBO feature. For cable lengths of 225ft or greater,
the TLBO pin (hardware mode) or the TLBO configuration bit (CPU bus mode) should be low. When TLBO is low,
output pulses are driven onto the coaxial cable without any preattenuation. For cable lengths less than 225ft, TLBO
should be high to enable the LBO circuitry. When TLBO is high, pulses are preattenuated by the LBO circuitry
before being driven onto the coaxial cable. The LBO circuitry provides attenuation that mimics the attenuation of
225ft of coaxial cable.
The transmitter line driver can be disabled and the TXP and TXN outputs tri-stated by asserting the
TTS input or
the TTS configuration bit. Powering down the transmitter through the TPD configuration bit (CPU bus mode) also
tri-states the TXP and TXN outputs.
Interfacing to the Line. The transmitter interfaces to the outgoing DS3/E3/STS-1 coaxial cable (75
Ω) through a
2:1 step-down transformer connected to the TXP and TXN pins. Figure 1-1 shows the arrangement of the
transformer and other recommended interface components. Table 11-A specifies the required characteristics of the
transformer.
Transmit Driver Monitor. If the transmit driver monitor detects a faulty transmitter, it activates the
TDM output
(hardware mode or CPU bus mode) or sets the TDM status bit and optionally activates the
INT output (CPU bus
mode). When the transmitter is tri-stated, the transmit driver monitor is also disabled. The transmitter is declared to
be faulty when the transmitter outputs see a load of less than ~25
Ω.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-260-IU-F2 | CONVERTER MOD DC/DC 5V 200W |
| DS3253+ | IC LIU DS3/E3/STS-1 144-CSBGA |
| MC10EP17DWG | IC RCVR/DRVR QUAD ECL DFF 20SOIC |
| MS27497T20F35P | CONN RCPT 79POS WALL MNT W/PINS |
| DS26324G+ | IC LIU 16CH T1/E1/J1 256CSBGA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3152N+ | 功能描述:网络控制器与处理器 IC Dual DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS3153 | 功能描述:网络控制器与处理器 IC Triple DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS3153+ | 功能描述:网络控制器与处理器 IC Triple DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS3153DK | 功能描述:网络开发工具 DS3153 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| DS3153N | 功能描述:网络控制器与处理器 IC Triple DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
发布紧急采购，3分钟左右您将得到回复。