参数资料
型号: KSZ8041MNLU TR
厂商: Micrel Inc
文件页数: 21/54页
文件大小: 0K
描述: TXRX PHY 100BASE TX 3.3V 32QFN
标准包装: 1
类型: PHY 收发器
驱动器/接收器数: 5/5
规程: MII,RMII
电源电压: 3.3V
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,32-MLF?
供应商设备封装: 32-MLF?(5x5)
包装: 标准包装
其它名称: 576-3744-6
Micrel, Inc.
KSZ8041NL/RNL
September 2010
28
M9999-090910-1.4
The KSZ8041RNL RMII pin connections to the MAC are shown in Figure 3.
Figure 3. KSZ8041RNL RMII Interface
HP Auto MDI/MDI-X
HP Auto MDI/MDI-X configuration eliminates the confusion of whether to use a straight cable or a crossover cable
between the KSZ8041NL/RNL and its link partner. This feature allows the KSZ8041NL/RNL to use either type of cable to
connect with a link partner that is in either MDI or MDI-X mode. The auto-sense function detects transmit and receive
pairs from the link partner, and then assigns transmit and receive pairs of the KSZ8041NL/RNL accordingly.
HP Auto MDI/MDI-X is enabled by default. It is disabled by writing a one to register 1F bit 13. MDI and MDI-X mode is
selected by register 1F bit 14 if HP Auto MDI/MDI-X is disabled.
An isolation transformer with symmetrical transmit and receive data paths is recommended to support auto MDI/MDI-X.
The IEEE 802.3 Standard defines MDI and MDI-X as follows:
MDI
MDI-X
RJ-45 Pin
Signal
RJ-45 Pin
Signal
1
TD+
1
RD+
2
TD-
2
RD-
3
RD+
3
TD+
6
RD-
6
TD-
Table 5. MDI/MDI-X Pin Definition
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