- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376329 > RTL8309SB (Electronic Theatre Controls, Inc.) SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER PDF資料下載
參數(shù)資料
| 型號： | RTL8309SB |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SINGLE-CHIP 9-PORT 10/100MBPS SWITCH CONTROLLER |
| 中文描述： | 單芯片9口10/100Mbps開關(guān)控制器 |
| 文件頁數(shù)： | 81/115頁 |
| 文件大?。?/td> | 866K |
| 代理商： | RTL8309SB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁當(dāng)前第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁
RTL8309SB
Datasheet
Single-chip 9-port 10/100Mbps Switch Controller
66
Track ID: JATR-1076-21 Rev. 1.4
8.
Functional Description
8.1.
Physical Layer Transceiver Functional Overview
8.1.1.
Auto Negotiation for UTP
The RTL8309SB obtains the states of duplex, speed, and flow control ability for each port in UTP mode through the auto-
negotiation mechanism defined in the IEEE 802.3u specifications. During auto-negotiation, each port advertises its ability to its
link partner and compares its ability with advertisements received from its link partner. By default, the RTL8309SB advertises
full capabilities (100Full, 100Half, 10Full, 10Half) together with flow control ability.
If the link partner to the RTL8309SB is forced to bypass auto negotiation, or auto negotiation is not supported, the link status
of the RTL8309SB is determined by observing the signal at the receiver.
8.1.2.
100Base-Tx Transmit Function
The 100Base-TX transmit function performs parallel to serial conversion, 4B/5B coding, scrambling, NRZ/NRZI conversion,
and MLT-3 encoding. The 5-bit serial data stream after 4B/5B coding is then scrambled as defined by the TP-PMD Stream
Cipher function to flatten the power spectrum energy such that EMI effects can be reduced significantly.
The scrambled seed is based on PHY addresses and is unique for each port. After scrambling, the bit stream is driven onto the
network media in the form of MLT-3 signaling. The MLT-3 multi-level signaling technology moves the power spectrum
energy from high frequency to low frequency, which also benefits EMI emission.
8.1.3.
100Base-Tx Receive Function
The 100Base-TX receive mechanism includes an adaptive equalizer, DC restoration, MLT3 to NRZI conversion, data and
clock recovery, NRZI to NRZ conversion, de-scrambling, 4B/5B decoding, and serial to parallel conversion. The process starts
with the adaptive equalizer and DC restoration circuits to compensate for the distortion in the MLT-3 signal. This variable
equalizer makes an estimate by comparing the received signal strength against some known cable characteristic, then tunes
itself for optimization. This on-going process allows the RTL8309SB to adjust itself to environmental changes such as
temperature variations. The equalized data then goes through a DC restoration circuit to compensate for the effects of base line
wander in order to improve the dynamic range.
After restoration, the MLT-3 to NRZI, NRZI to NRZ converters then convert the analog signal to a digital bit-stream. The
clock recovery circuit extracts the 125MHz clock from the edges of the NRI signal. A De-scrambler, 5B/4B decoder and serial-
to-parallel conversion circuits follow. Finally, the converted parallel data is fed into the MAC.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| RTS0072 | VOICE CHANGER |
| RTS0072B | VOICE CHANGER |
| RU4D | SDR Cable Assembly; Connector Type A:micro D Ribbon Plug; Connector Type B:micro D Ribbon Plug; Cable Length:2m; No. of Contacts:26; Pitch Spacing:0.8mm RoHS Compliant: Yes |
| RU4D | Damper Diodes (For Display) |
| RU4DS | SDR Cable Assembly; Connector Type A:micro D Ribbon Plug; Connector Type B:micro D Ribbon Plug; Cable Length:5m; No. of Contacts:26; Pitch Spacing:0.8mm RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RTL8309SB-LF | 制造商:Realtek Semiconductor 功能描述:RTL8309 Series 9 Port 10/100 Mbps Ethernet Switch Controller - PQFP-128 制造商:Realtek 功能描述:RTL8309 Series 9 Port 10/100 Mbps Ethernet Switch Controller - PQFP-128 |
| RTL8316 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Specifications |
| RTL8363S-GR | 制造商:Realtek Semiconductor 功能描述: |
| RTL8801 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Specifications |
| RTL8812AE | 制造商:Realtek 功能描述:2.4G/5G 2T2R a.b.g.n.ac wireless mini PCIE card |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。