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| 型号： | WJLXT908LC.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： | 11/46页 |
| 文件大小： | 618K |
| 代理商： | WJLXT908LC.A4 |
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Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver
Datasheet
19
Document #: 249049
Revision #: 003
Rev. Date: 29-Oct-2005
3.0
Application Information
Figure 9 on page 20 through Figure 15 on page 26 show typical Intel
LXT908 Universal 3.3 V
10BASE-T and AUI Transceiver applications.
3.1
External Components
3.1.1
Crystal Information
Suitable crystals are available from various manufacturers. Table 3 lists suitable crystals based on a
limited evaluation. Designers should test and validate all crystals before using them in production.
3.1.2
Magnetic Information
The twisted-pair interface requires a 1:1 ratio for the receive transformer, and a 1:2 ratio for the
transmit transformer. The AUI interface requires a 1:1 ratio for data-in, data-out, and collision-pair
transformers. A cross-reference list of suitable magnetics and part numbers is available in
Application Note 73, Magnetic Manufacturers (248991-001), that can be found on the Intel website
(www.intel.com). Designers should test and validate all magnetics before committing to a specific
component.
3.2
Layout Requirements
3.2.1
Auto Port Select with External Loopback Control
Figure 9 on page 20 is a typical Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver
application. The diagram groups similar pins together, but does not represent the actual Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver pin-out. The controller interface pins
(TXD, RXD, TEN, TCLK, RCLK, CD, COL, and LBK) are shown at the top left of the diagram.
Programmable option pins are grouped at the center left of the diagram. The PAUI pin is tied Low
and all other option pins are tied High. This setup selects the following options:
Automatic Port Selection
(PAUI Low and AUTOSEL High)
Normal Receive Threshold (NTH High)
Mode 4, compatible with National NS8390 controllers (MD2:0 = Low, High, High)
SQE Disabled (DSQE High)
Link Testing Enabled (LI High)
Table 3.
Suitable Crystals
Manufacturer
Part Number
MTRON
MP-1
MP-2
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相关代理商/技术参数 |
参数描述 |
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| WJLXT908LE.A4 | 功能描述:IC 3V 10BASE-T/AUI TXCVR 64-LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| WJLXT908LE.A4-865811 | 制造商:Cortina Systems Inc 功能描述:Ethernet TXRX Single Chip 1-Port 3.3V 10Mbps 64-Pin LQFP |
| WJLXT908LE.A4-865812 | 制造商:Cortina Systems Inc 功能描述:LXT908 UNIVERSAL ETHERNET INTE |
| WJLXT908LEA4 | 制造商:Cortina Systems Inc 功能描述: |
| WJLXT971ALC.A4 | 功能描述:IC TRANS 3.3V ETHERNET 64-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 |
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