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参数资料
| 型号： | KSZ8001SL TR |
| 厂商： | Micrel Inc |
| 文件页数： | 16/46页 |
| 文件大小： | 0K |
| 描述： | TXRX 10/100 LINKMD 3.3V 48-SSOP |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 规程： | MII，RMII，SMII |
| 电源电压： | 1.8V, 3.3V |
| 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： | 带卷 (TR) |
| 配用： | 576-1620-ND - BOARD EVALUATION FOR KSZ8001L |
| 其它名称： | KSZ8001SLTR KSZ8001SLTR-ND |
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Micrel
KSZ8001
June 2009
Revision 1.04
23
KSZ8001
Rx +/-
Tx +/-
FTx
FRx
KSZ8001
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 KSZ8001 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 KSZ8001 to shut down the link partner. In this case, the test is not
run, since it would not be possible for the KSZ8001 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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| KSZ801S | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:1.8C, 3.3V 10/100BASE-T/TX/FX Physical Layer Transceiver |
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| KSZ8021RNL TR | 功能描述:以太网 IC 3.3V, 100Base-FX Physical Layer Transceiver with RMII support (24-QFN) 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 |
| KSZ8021RNL-EVAL | 功能描述:以太网开发工具 3.3V, 100Base-FX Physical Layer Transceiver w/ RMII Support - 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: |
| KSZ8021RNL-TR | 功能描述:1/1 Transceiver Full RMII 24-QFN (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:过期 类型:收发器 协议:RMII 驱动器/接收器数:1/1 双工:全 接收器滞后:- 数据速率:- 电压 - 电源: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:24-VFQFN 裸露焊盘 供应商器件封装:24-QFN（4x4） 标准包装:1 |
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