- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362558 > E-110 (LSI Corporation) 100BASE-T Fast Ethernet Core(100BASE-T快速以太網(wǎng)處理芯片 Fast Ethernet Core) PDF資料下載
參數(shù)資料
| 型號(hào)： | E-110 |
| 廠商： | LSI Corporation |
| 英文描述： | 100BASE-T Fast Ethernet Core(100BASE-T快速以太網(wǎng)處理芯片 Fast Ethernet Core) |
| 中文描述： | 100兆- T的快速以太網(wǎng)核心（100兆- T的快速以太網(wǎng)處理芯片快速以太網(wǎng)核心） |
| 文件頁(yè)數(shù)： | 78/130頁(yè) |
| 文件大小： | 770K |
| 代理商： | E-110 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)當(dāng)前第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)
3-6
Core Descriptions
The general flow of transmit packet data is from the host through the
transmit control logic to the transmit function block and then into the
media PHY device. The transmit function block of the E-110 MAC
generates 100BASE-T transmit MII nibble data streams in response to
byte streams supplied from the transmit logic. The transmit function
performs the required deferral and backoff algorithms and reports per
packet statistics. The transmit function operates on the 25- or 2.5-MHz
MII transmit nibble clock.
The E-110 MAC core monitors the physical medium even when it has
nothing to transmit by tracking the Carrier Sense (CRS) signal from the
PHY. When the medium is busy, the MAC defers to the frame in progress
by delaying any pending transmission of its own. When the PHY
deasserts CRS, it indicates to the MAC that the last bit of the frame has
been transmitted onto the physical medium. The MAC then continues to
defer transmission for a period called the interpacket gap (IPG).
The purpose of deference is to ensure a minimum interframe spacing to
allow a station recovery time to process a received frame and for the
medium to recover. Deference applies to both 10-Mbit/s and 100-Mbit/s
operation.
There is an IPG counter inside the MAC that begins counting after a
deferral. You can specify three threshold values for the counter:
IPGR1[6:0]—Non Back-to-Back IPG, Part 1
IPGR2[6:0]—Non Back-to-Back IPG, Part 2
IPGT[6:0]—Back-to-Back Transmit IPG
To provide maximum flexibility for the IPG in both full-duplex and half-
duplex operation, these thresholds are programmable. Due to possible
variations in PHY propagation delays, the programmable thresholds may
need to be adjusted to meet IEEE 802.3u deference requirements.
As soon as the CRS signal is deasserted, the MAC begins timing the
IPG with the IPG counter.
IPG Half-Duplex Operation –
The IPGT[6:0]
1
signals contain the
threshold value to be compared to the IPG counter. The threshold value
is used for back-to-back MAC transmissions. As soon as the MAC’s IPG
count is equal to IPGT[6:0], the MAC may begin transmission.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| E05-20M1 | 5 WATT WIDE INPUT DC TO DC CONVERTERS |
| E05-X0 | 5 Watt Wide Input DC to DC Converters |
| E05-X1 | 5 Watt Wide Input DC to DC Converters |
| E05-X2 | 5 Watt Wide Input DC to DC Converters |
| E05-X3 | 5 Watt Wide Input DC to DC Converters |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| E110.000 | 功能描述:折皺器 Ferrule Crimper 26-10 AWG RoHS:否 制造商:Hirose Connector 類型: 描述/功能:Cable and Shield Crimper |
| E110.005 | 功能描述:折皺器 UNIV FERRULE CRIMPER 20-8 AWG 0.5-10 RoHS:否 制造商:Hirose Connector 類型: 描述/功能:Cable and Shield Crimper |
| E110.010 | 功能描述:折皺器 FERRULE CRIMPER 8-6AWG RoHS:否 制造商:Hirose Connector 類型: 描述/功能:Cable and Shield Crimper |
| E110.015 | 功能描述:折皺器 FERRULE CRIMPER 4-2AWG 25-35 RoHS:否 制造商:Hirose Connector 類型: 描述/功能:Cable and Shield Crimper |
| E110.020 | 功能描述:折皺器 FERRULE CRIMPER 1 AWG 50 RoHS:否 制造商:Hirose Connector 類型: 描述/功能:Cable and Shield Crimper |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。