- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄359605 > LAN9116-MT (STANDARD MICROSYSTEMS CORP) Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller PDF資料下載
參數(shù)資料
| 型號(hào)： | LAN9116-MT |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller |
| 中文描述： | 1 CHANNEL(S), 100M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100 |
| 封裝： | ROHS COMPLIANT, TQFP-100 |
| 文件頁(yè)數(shù)： | 22/126頁(yè) |
| 文件大小： | 831K |
| 代理商： | LAN9116-MT |
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)當(dāng)前第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)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)
Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
Revision 1.1 (05-17-05)
22
SMSC LAN9116
DATASHEET
3.2
Flow Control
The LAN9116 Ethernet MAC supports full-duplex flow control using the pause operation and control
frame. It also supports half-duplex flow control using back pressure.
3.2.1
Full-Duplex Flow Control
The pause operation inhibits data transmission of data frames for a specified period of time. A Pause
operation consists of a frame containing the globally assigned multicast address (01-80-C2-00-00-01),
the PAUSE opcode, and a parameter indicating the quantum of slot time (512 bit times) to inhibit data
transmissions. The PAUSE parameter may range from 0 to 65,535 slot times. The Ethernet MAC logic,
on receiving a frame with the reserved multicast address and PAUSE opcode, inhibits data frame
transmissions for the length of time indicated. If a Pause request is received while a transmission is
in progress, then the pause will take effect after the transmission is complete. Control frames are
received and processed by the MAC and are passed on.
The MAC also transmits control frames (pause command) via both hardware and software control. The
software driver requests the MAC to transmit a control frame and gives the value of the PAUSE time
to be used in the control frame. The MAC Function constructs a control frame with the appropriate
values set in all the different fields (as defined in the 802.3x specification) and transmits the frame to
the MII interface. The transmission of the control frame is not affected by the current state of the Pause
timer value that is set because of a recently received control frame.
3.2.2
Half-Duplex Flow Control (Backpressure)
In half-duplex mode, back pressure is used for flow control. Whenever the receive buffer/FIFO
becomes full or crosses a certain threshold level, the MAC starts sending a Jam signal. The MAC
transmit logic enters a state at the end of current transmission (if any), where it waits for the beginning
of a received frame. Once a new frame starts, the MAC starts sending the Jam signal, which will result
in a collision. After sensing the collision, the remote station will back off its transmission. The MAC
continues sending the jam to make other stations defer transmission. The MAC only generates this
collision-based back pressure when it receives a new frame, in order to avoid any late collisions.
3.2.3
Virtual Local Area Network (VLAN)
VLAN is a means to form a “broadcast domain” without restriction on the physical or geographical
location on the members of that domain. VLAN can be implemented in any number of different factors,
such as:
■
Physical port
■
MAC address
■
Layer-3 unicast address
■
Multicast address
■
Date/time in combination with MAC address, etc.
An example of a VLAN is depicted in Figure 3.1, "VLAN Topology". It demonstrates the freedom from
physical constraint on the network, and the ability to divide a single switched network into a smaller
broadcast domain.
Moreover, VLAN offers a number of other advantages, such as:
Configurability:
Changes to an existing VLAN can be made on the network administrative level, rather
than on the hardware level. A member of a VLAN can thus change its MAC address or its port and
still be a member of the same VLAN. Extra routing is not necessary.
Security:
VLAN can improve security by demanding a predefined authentication before admitting a
new member to the domain.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP621024D-55LLT | 128K X 8 BIT CMOS SRAM |
| LP621024D-I | 128K X 8 BIT CMOS SRAM |
| LP621024D-T | 128K X 8 BIT CMOS SRAM |
| LP62S1024BM-70LLT | 128K X 8 BIT LOW VOLTAGE CMOS SRAM |
| LP621024DX-55LLI | 128K X 8 BIT CMOS SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LAN9117 | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER |
| LAN9117-MD | 功能描述:以太網(wǎng) IC HiPerfrm Sngl-Chip 10/100 Ethrnt RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN9117-MT | 功能描述:以太網(wǎng) IC HiPerfrm Sngl-Chip 10/100 Ethrnt RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| LAN9118 | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:High Performance Single-Chip 10/100 Non-PCI Ethernet Controller |
| LAN9118_05 | 制造商:SMSC 制造商全稱(chēng):SMSC 功能描述:High Performance Single-Chip 10/100 Non-PCI Ethernet Controller |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。