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參數(shù)資料
| 型號： | ADM6996L |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | 6 port 10/100 Mb/s Single Chip Ethernet Switch Controller |
| 中文描述： | 6端口10/100 Mb / s的單芯片以太網(wǎng)交換機控制器 |
| 文件頁數(shù)： | 22/61頁 |
| 文件大?。?/td> | 1743K |
| 代理商： | ADM6996L |
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ADM6996L
Function Description
functions, as defined in the standard. Figure 3 provides an overview for the 10Base-T
module.
The ADM6996L 10Base-T module is comprised of the following functional blocks:
Manchester encoder and decoder
Collision detector
Link test function
Transmit driver and receiver
Serial and parallel interface
Jabber and SQE test functions
Polarity detection and correction
3.6.1 Operation Modes
The ADM6996L 10Base-T module is capable of operating in either half-duplex mode or
full-duplex mode. In half-duplex mode, the ADM6996L functions as an IEEE 802.3
compliant transceiver with fully integrated filtering. The COL signal is asserted during
collisions or jabber events, and the CRS signal is asserted during transmit and receive. In
full duplex mode the ADM6996L can simultaneously transmit and receive data.
3.6.2 Manchester Encoder/Decoder
Data encoding and transmission begins when the transmission enable input (TXEN) goes
high and continues as long as the transceiver is in good link state. Transmission ends
when the transmission enable input goes low. The last transition occurs at the center of
the bit cell if the last bit is a 1, or at the boundary of the bit cell if the last bit is 0.
Decoding is accomplished by a differential input receiver circuit and a phase-locked loop
that separate the Manchester-encoded data stream into clock signals and NRZ data. The
decoder detects the end of a frame when no more mid bit transitions are detected. Within
one and half bit times after the last bit, carrier sense is de-asserted.
3.6.3 Transmit Driver and Receiver
The ADM6996L integrates all the required signal conditioning functions in its 10Base-T
block such that external filters are not required. Only one isolation transformer and
impedance matching resistors are needed for the 10Base-T transmit and receive interface.
The internal transmit filtering ensures that all the harmonics in the transmission signal are
attenuated properly.
3.6.4 Smart Squelch
The smart squelch circuit is responsible for determining when valid data is present on the
differential receive. The ADM6996L implements an intelligent receive squelch on the
RXP/RXN differential inputs to ensure that impulse noise on the receive inputs will not
be mistaken for a valid signal. The squelch circuitry employs a combination of amplitude
Infineon-ADMtek Co. Ltd.
3-6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM6996LAAT1 | 功能描述:IC SWITCH CTRLR 10/100 128PQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| ADM6996L-AA-T-1 | 制造商:Rochester Electronics LLC 功能描述:ETHERNET SWITCH - Bulk |
| ADM6996LAAT1NP | 制造商:Infineon Technologies AG 功能描述:Ethernet CTLR Single Chip 10Mbps/100Mbps 3.3V 128-Pin MQFP Tray |
| ADM6996LC | 制造商:Infineon Technologies AG 功能描述: |
| ADM6996LC-AC-R-1 | 功能描述:IC ETHERNET SW CTRLR 128-PQFP RoHS:否 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標準包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
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