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參數(shù)資料
| 型號： | TMC2005 |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 網(wǎng)絡(luò)接口 |
| 英文描述： | 5 Port HUB Controller Device |
| 中文描述： | DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PQFP60 |
| 封裝： | QFP-60 |
| 文件頁數(shù)： | 12/32頁 |
| 文件大?。?/td> | 153K |
| 代理商： | TMC2005 |
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SMSC DS – TMC2005
Page 12
Rev. 10/24/2000
Option Feature for Jitter Filtering
When any RX ports receive the bigger jitter than its allowance, the TMC2005 may fail to receive the data
correctly and the network may be down.. However the below method to escape is effective for the case that a
momentary big jitter occurs under a special condition like an optical transceiver.
1) Big jitter (BJ) mode
The reference phase of the internal DPLL is changed from the first pulse to the second pulse by setting “0” to the
big jitter mode pins (nBJX). This setup is effective for the case that a big jitter occurs when rising up from DC state
as same as when using an optical transceiver with ATC function (refer to complement).
Note:
time limits the maximum cable length and maximum node number.
The delay time of the TMC2005 becomes 400nS (at 2.5Mbps) longer than the normal mode. The delay
[Complement]
The big jitter may occur in the case of using an optical transceiver, especially an optical receiver that
has an ATC circuit that controls threshold level in proportion to received light strength. The first pulse especially
after long time idle has the big jitter but the second pulse is stabilized.
2) Changing polar of RX port
In order to filter the jitter of edge in one side, it is effective to set reverse to pin SA, SB, SE to change the polarity of
RX port.
Note:
than original 2.5Mbps, and the delay time affects the maximum cable length and maximum node number.
Changing the polarity of RX port makes the delay time of the TMC2005 circuit a half bit (200nS) longer
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相關(guān)代理商/技術(shù)參數(shù) |
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| TMC2005-JT | 功能描述:接口 - 專用 5 Port Hub Contrllr RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59 |
| TMC20073 | 制造商:SMSC 制造商全稱:SMSC 功能描述:CIRCLINK COMMUNICATIONS CONTROLLER LSI |
| TMC-20073 | 制造商:Microchip Technology Inc 功能描述:ARCNET CONTROLLER |
| TMC20073-NT | 制造商:SMSC 制造商全稱:SMSC 功能描述:CIRCLINK COMMUNICATIONS CONTROLLER LSI |
| TMC200A | 制造商:TOPSTEK 制造商全稱:TOPSTEK 功能描述:Topstek Current Transducer |
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