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| 型号： | WJLXT972ALC.A4 |
| 厂商： | INTEL CORP |
| 元件分类： | 网络接口 |
| 英文描述： | DATACOM, ETHERNET TRANSCEIVER, PQFP64 |
| 封装： | ROHS COMPLIANT, LQFP-64 |
| 文件页数： | 19/97页 |
| 文件大小： | 1281K |
| 代理商： | WJLXT972ALC.A4 |
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Intel
LXT972A Single-Port 10/100 Mbps PHY Transceiver
26
Datasheet
Document Number: 249186-004
Revision Date: 25-Oct-2005
5.2.1.1
Twisted-Pair Interface
The LXT972A Transceiver supports either 100BASE-TX or 10BASE-T connections over 100
Ω,
Category
5, Unshielded Twisted Pair (UTP) cable. When operating at 100 Mbps, the LXT972A
Transceiver continuously transmits and receives MLT3 symbols. When not transmitting data, the
LXT972A Transceiver generates “IDLE” symbols.
During 10 Mbps operation, Manchester-encoded data is exchanged. When no data is being
exchanged, the line is left in an idle state. Link pulses are transmitted periodically to keep the link
up.
Only a transformer, RJ-45 connector, load resistor, and bypass capacitors are required to complete
this interface. On the transmit side, the LXT972A Transceiver has an active internal termination
and does not require external termination resistors. Intel's patented waveshaping technology shapes
the outgoing signal to help reduce the need for external EMI filters. Four slew rate settings allow
the designer to match the output waveform to the magnetic characteristics. On the receive side, the
internal impedance is high enough that it has no practical effect on the external termination circuit.
(For the slew rate settings, see Table 56, “Transmit Control Register - Address 30, Hex 1E” on
page 93.)
5.2.1.2
Remote Fault Detection and Reporting
The LXT972A Transceiver supports the remote fault detection and reporting mechanisms.
“Remote Fault” refers to a MAC-to-MAC communication function that is transparent to PHY layer
devices. It is used only during auto-negotiation, and is applicable only to twisted-pair links.
Remote Fault Detection. Register bit 4.13 in the Auto-Negotiation Advertisement Register is
reserved for Remote Fault indications. It is typically used when re-starting the auto-negotiation
sequence to indicate to the link partner that the link is down because the advertising device
detected a local fault.
When the LXT972A Transceiver receives a Remote Fault indication from its partner during auto-
negotiation, the following occurs:
Register bit 5.13 in the Link Partner Base Page Ability Register is set.
Remote Fault Register bit 1.4 in the MII Status Register is set to pass this information to the
local controller.
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| WJLXT972MLC.A4 | 功能描述:IC TRANS 3.3V ETHERNET 48-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-PDIP 包装:管件 |
| WJLXT972MLC.A4 S L7U9 | 制造商:Intel 功能描述:PHY 1-CH 10Mbps/100Mbps 64-Pin LQFP |
| WJLXT972MLC.A4-864115 | 功能描述:TXRX ETH 10/100 SGL PORT 48-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 产品目录页面:1402 (CN2011-ZH PDF) |
| WJLXT972MLCA4 | 制造商:Cortina Systems Inc 功能描述: |
| WJM1000 | 功能描述:射频模块 902-928 MHz US ISM EPC Class 1 Gen 2 RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
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