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参数资料
| 型号： | WJLXT972ALC.A4SE000 |
| 厂商： | CORTINA SYSTEMS INC |
| 元件分类： | 网络接口 |
| 英文描述： | DATACOM, ETHERNET TRANSCEIVER, PQFP64 |
| 封装： | LEAD FREE, LQFP-64 |
| 文件页数： | 93/100页 |
| 文件大小： | 1046K |
| 代理商： | WJLXT972ALC.A4SE000 |
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18
Intel LXT971A, LXT972A, and LXT972M Transceivers Specification Update
Document Number: 249354
Revision Number: 010
Revision Date: January 13, 2005
Errata
5.
Incorrect JTAG Revision Code
Problem:
LXT971A and LXT972A Transceivers (A2) JTAG Device ID is as follows - 0001 03CB 1110 111
1110 1
As per the standard, the Jedec Continuation Character (Register bit 11:8) for the Intel devices
should have been 0000 instead of 1110.
Implication:
JTAG boundary scan receives an incorrect JTAG ID for the LXT971A and LXT972A Trans-
ceivers.
Workaround:
Use a continuation character of 1110 when addressing an LXT971A Transceiver Stepping 1.
Status:
This erratum has been previously fixed.
6.
Incorrect Duplex - Collision LED Display
Problem:
When the port LED is configured to indicate Duplex and Collision through the LED Configuration
Register (Address 20), the LED does not indicate Collision when transmitting and receiving in a
half-duplex link.
Workaround:
Configure a separate LED for Collision only. A dedicated LED properly indicates a collision is
occurring.
Status:
This erratum has been previously fixed.
7.
Incorrect Activity LED Display
Problem:
With pulse stretching enabled, port activity is indicated with a slow blinking rate on the activity
LED when the port is in full-duplex and the port transmit and receive traffic has the same packet
size and inter-packet gap (IPG) for an extended period of time. A correct indication is for the
activity LED to remain active when continuously transmitting and receiving.
The activity LED resumes normal operation if either packet size or IPG is altered.
Implication:
The activity LED indication will not match the traffic rate at the port. Only the Activity LED
behavior is affected. Neither transmit nor receive status LED functionality are affected.
The activity LED operation has no impact on data reliability.
Workaround:
Use the following steps for a possible workaround:
1. Use either transmit or receive status instead of activity as the LED indication.
2. Logically ‘OR’ transmit status and receive status to generate an activity indicator. This
workaround requires external hardware to complete the ‘OR’ function.
3. Add external pulse stretching through a PLD while disabling on-chip pulse stretching through
Register 20 (Register bit 20.1 = 0). This workaround requires external hardware and
manageability through the MDIO interface. Also, because pulse stretching is global to the
device, external logic must be added for any LED signal that requires stretching.
4. Display both transmit and receive status individually.
Status:
This erratum has been previously fixed.
相关PDF资料 |
PDF描述 |
|---|---|
| WJLXT972ALC.A4SE001 | DATACOM, ETHERNET TRANSCEIVER, PQFP64 |
| WJLXT972ALC.A4 | DATACOM, ETHERNET TRANSCEIVER, PQFP64 |
| WJLXT972ALC.A4 | DATACOM, ETHERNET TRANSCEIVER, PQFP64 |
| WJLXT972MLC.A4-864101 | DATACOM, ETHERNET TRANSCEIVER, PQFP48 |
| WJLXT972MLC.A4-864115 | DATACOM, ETHERNET TRANSCEIVER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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