- 您现在的位置：买卖IC网 > PDF目录11593 > KSZ8873FLL (Micrel Inc)IC ETHERNET SW 3PORT 64LQFP PDF资料下载
参数资料
| 型号： | KSZ8873FLL |
| 厂商： | Micrel Inc |
| 文件页数： | 34/115页 |
| 文件大小： | 0K |
| 描述： | IC ETHERNET SW 3PORT 64LQFP |
| 产品培训模块： | KSZ8873 Ethernet Switches |
| 特色产品： | KSZ8873 Ethernet Switch Controller |
| 标准包装： | 160 |
| 控制器类型： | 以太网开关控制器 |
| 接口： | MII |
| 电源电压： | 1.8V，2.5V，3.3V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
| 其它名称： | 576-3631 KSZ8873FLL-ND |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页当前第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页
Micrel, Inc.
KSZ8873MLL/FLL/RLL
September 20, 2013
25
Revision 1.6
Functional Overview: Power Management
The KSZ8873MLL/FLL/RLL supports enhanced power management feature in low power state with energy detection to
ensure low-power dissipation during device idle periods. There are five operation modes under the power management
function which is controlled by two bits in Register 195 (0xC3) and one bit in Register 29 (0x1D),45(0x2D) as shown
below:
Register 195 bit[1:0] = 00 Normal Operation Mode
Register 195 bit[1:0] = 01 Energy Detect Mode
Register 195 bit[1:0] = 10 Soft Power-Down Mode
Register 195 bit[1:0] = 11 Power-Saving Mode
Register 29,45 bit 3 =1 Port-Based Power-Down Mode
Table 3 indicates all internal function blocks status under four different power management operation modes.
Table 3. Internal Function Block Status
KSZ8873MLL/FLL/RLL
Function Blocks
Power Management Operation Modes
Normal Mode
Power Saving Mode
Energy Detect Mode
Soft Power Down Mode
Internal PLL Clock
Enabled
Disabled
Tx/Rx PHY
Enabled
Rx unused block disabled
Energy detect at Rx
Disabled
MAC
Enabled
Disabled
Host Interface
Enabled
Disabled
Normal Operation Mode
This is the default setting bit[1:0]=00 in Register 195 after the chip power-up or hardware reset . When
KSZ8873MLL/FLL/RLL is in this normal operation mode, all PLL clocks are running, PHY and MAC are on and the host
interface is ready for CPU read or write.
During the normal operation mode, the host CPU can set the bit[1:0] in Register 195 to transit the current normal
operation mode to any one of the other three power management operation modes.
Energy-Detect Mode
The energy-detect mode provides a mechanism to save more power than in the normal operation mode when the
KSZ8873MLL/FLL/RLL is not connected to an active link partner. In this mode, the device will save up to 50% of the
power. If the cable is not plugged, the KSZ8873MLL/FLL/RLL can automatically enter to a low power state, a.k.a., the
energy-detect mode. In this mode, KSZ8873MLL/FLL/RLL will keep transmitting 120ns width pulses at 1 pulse/s rate.
Once activity resumes due to plugging a cable or attempting by the far end to establish link, the KSZ8873MLL/FLL/RLL
can automatically power up to normal power state in energy detect mode.
Energy detect mode consists of two states, normal power state and low power state. While in low power state, the
KSZ8873MLL/FLL/RLL reduces power consumption by disabling all circuitry except the energy detect circuitry of the
receiver. The energy detect mode is entered by setting bit[1:0]=01 in Register 195. When the KSZ8873MLL/FLL/RLL is in
this mode, it will monitor the cable energy. If there is no energy on the cable for a time longer than pre-configured value at
bit[7:0]
Go-Sleep
time
in
Register
196,
KSZ8873MLL/FLL/RLL
will
go
into
a
low
power
state.
When
KSZ8873MLL/FLL/RLL is in low power state, it will keep monitoring the cable energy. Once the energy is detected from
the cable, KSZ8873MLL/FLL/RLL will enter normal power state. When KSZ8873MLL/FLL/RLL is at normal power state, it
is able to transmit or receive packet from the cable.
It will save about 87% of the power when MII interface is in PHY mode, Pin SMTXER3/MII_LINK_3 is connected to High,
Register 195 bit [1:0] =01, bit 2 =1(Disable PLL), not cables are connected.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-B6J-IW-F1 | CONVERTER MOD DC/DC 36V 100W |
| VI-B6H-IW-F2 | CONVERTER MOD DC/DC 52V 100W |
| VI-B6F-IX-F4 | CONVERTER MOD DC/DC 72V 75W |
| VI-B6F-IW-F2 | CONVERTER MOD DC/DC 72V 100W |
| VI-B6D-IX-F1 | CONVERTER MOD DC/DC 85V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ8873FLL-EVAL | 功能描述:以太网开发工具 3-Port Fast Ethernet Switch with 2x FX Ports - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压: |
| KSZ8873FLLI | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 2x FX Ports (Industrial Grade) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MLL | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 1x MII Interface - Lead Free RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MLL AM | 功能描述:以太网 IC 3-Port 10/100 Ethernet Switch with 1x MII Interface (Automotive Grade, Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
| KSZ8873MLL AM TR | 功能描述:以太网 IC 3-Port 10/100 Ethernet Switch with 1x MII Interface (Automotive Grade, Lead Free) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray |
发布紧急采购，3分钟左右您将得到回复。