参数资料
| 型号： | KS8001S |
| 厂商： | Micrel Inc |
| 文件页数： | 16/44页 |
| 文件大小： | 0K |
| 描述： | TXRX 10/100 LINKMD 3.3V 48-SSOP |
| 标准包装： | 30 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | IEEE 802 |
| 电源电压： | 1.8 V ~ 3.3 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-BSSOP（0.295"，7.50mm 宽） |
| 供应商设备封装： | 48-SSOP |
| 包装： | 管件 |
| 配用： | KS8001L-EVAL-ND - EVAL KIT EXPERIMENTAL KS8001L |
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页当前第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
KS8001
Micrel
May 2005 – SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
KS8001
MICREL CONFIDENTIAL. DO NOT DISTRIBUTE.
23
KS8001
Rx +/-
Tx +/-
FTx
FRx
KS8001
Vcc
Pin
34
RxD
TxD
To the SD pin of the
Fiber Module
(Fiber Mode)
Vcc
RxD
TxD
21 22
Pin
21 22
OSC
50 MHz
TxC/
Ref_CLK
TxC/
Ref_CLK
LinkMD Cable Diagnostics
The KS8001 utilizes time domain reflectometry (TDR) to analyze the cabling plant for common cabling problems such as open
circuits, short circuits and impedance mismatches. LinkMD works by sending a pulse of known amplitude and duration down the
MDI and MDIX pairs and analyzing the shape of the reflected signal. Timing the duration gives an indication of the distance to the
cabling fault with maximum distance of 200 m and accuracy of +/- 2 m. Cable diagnostics are only valid for copper connections and
do not support fiber optic operation.
LinkMD is used by accessing register 1dh, the LinkMD Control/Status register in conjunction with register 1fh, the 100BASE-TX PHY
Controller register. To use LinkMD, HP Auto-MDIX is disabled by writing a ‘1’ to 1f:13 to enable manual control over which pair is
used to transmit the LinkMD pulse. The self-clearing Cable diagnostic test enable bit, 1d.15 is set to ‘1’ to start the test on this pair.
When 1d.15 returns to ‘0’, the test is complete. The test result is returned in 1d.14:13 and the distance is returned in 1d.8:0. The
cable diagnostic test results are as follows:
00 = Valid test, normal condition
01 = Valid test, open circuit in cable
10 = Valid test, short circuit in cable
11 = Invalid test, LinkMD failed
The ‘11’ case, Invalid test, occurs when it is not possible for the KS8001 to shut down the link partner. In this case, the test is not
run, since it would not be possible for the KS8001 to determine if the detected signal is a reflection of the signal generated or a
signal from another source.
Cable length can be determined by multiplying the contents of 1d.8:0 by 0.39. This constant may be calibrated for different cabling
conditions, including cables with a velocity of propagation that varies significantly from the norm.
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相关代理商/技术参数 |
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| KS8001S TR | 功能描述:TXRX 10/100 LINKMD 3.3V 48-SSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
| KS8001SI | 功能描述:TXRX 10/100 LINKMD 3.3V 48-SSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
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| KS800A500-1800V Y40KSE | 制造商:LIUJING 制造商全称:LIUJING 功能描述:可控硅、晶闸管 |
| KS8081 | 功能描述:IC SWITCH 10/100 3PORT 128PQFP RoHS:否 类别:集成电路 (IC) >> 专用 IC 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- 类型:调帧器 应用:数据传输 安装类型:表面贴装 封装/外壳:400-BBGA 供应商设备封装:400-PBGA（27x27） 包装:散装 |
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