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參數(shù)資料
| 型號(hào)： | TSB17BA1PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | IEEE STD 1394b SINGLE-PORT CABLE TRANSCEIVER |
| 中文描述： | IEEE標(biāo)準(zhǔn)的1394b單端口電纜收發(fā)器 |
| 文件頁(yè)數(shù)： | 10/15頁(yè) |
| 文件大?。?/td> | 218K |
| 代理商： | TSB17BA1PW |
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SLLS568C JANUARY 2004 REVISED MARCH 2004
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
cable connection (continued)
This also works for CAT5-structured wiring cable that is typically installed in a home or office. The CAT5 cables
in these structured wiring installations are wired straight through and do not crossover. It is recommended that
the structured wiring hub at the center of the star-type installation contain only straight-through wiring. If the
RJ45 connector is brought outside the wall, then it also is connected straight through. If all networkable devices
are also created as straight-through connections, then the required crossover is implemented when the
networkable device is connected to the RJ45 wall-plate connection using a crossover cable.
There is a special case for the structured wiring if the wall plate enables a 4-pin, 6-pin, or 9-pin 1394b connector.
In this case, one port of the 1394b PHY is connected to the 1394b connector in the typical manner. However,
the connection between the 1394b PHY and the UTP5 connection inside the wall must implement a crossover.
This is true if the 1394b-structured wiring hub is wired straight through and the cable pulled is straight through.
In this case, since all the electrical connections between the two 1394b ports are straight through, the crossover
must be implemented on the wall-plate UTP5 connection. It is required that this crossover be completed
between the RJ45 connector on the wall plate and the isolating transformer of the termination network.
Please contact Texas Instruments for further detail.
PCB layout considerations
There are certain signals that require special care in the layout of the TSB17BA1. The UTP5_INP and
UTP5_INN signals are the inputs from what might be a 100-m cable. After propagating through a cable this long
the signal amplitudes could be small and more easily affected by board noise. The routing for these signals from
the RJ45 connector through the termination network to the PHY must be short and, if possible, a ground guard
etch must be implemented to protect them from board noise. This etch must extend the length of the traces,
be far enough away from the signal traces not to significantly affect the trace impedance, and be connected to
the ground plane every 2 cm or less.
The precision resistor between the R1 and R0 terminals sets the internal currents and voltages of the
TSB17BA1. Any noise that couples onto the R1 terminal can affect the entire device. Therefore, this connection
must be kept short and as close to the TSB17BA1 as possible. This connection can also benefit from a ground
guard etch around the R1 and R0 terminal connections.
To keep the noise introduced to these signals to a minimum it is recommended that no digital signals or large
amplitude analog signals (like switching regulators) be routed in the vicinity of terminals 1922 on the
TSB17BA1. The output signals of the TSB17BA1 (UTP5_OUTP, UTP5_OUTN, BETA_OUTP, and
BETA_OUTN) must also be routed away from these sensitive input pins.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSB17BA1PWG4 | 功能描述:1394 接口集成電路 UTP5 Equalizer for 1394b PHYs RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray |
| TSB18 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSB1857CT A3 | 功能描述:兩極晶體管 - BJT PNP Transistor Low Vce sat RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| TSB19 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSB2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
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