参数资料
型号: MCP47DA1T-A0E/OT
厂商: Microchip Technology
文件页数: 21/54页
文件大小: 0K
描述: IC DGTL POT 30K 1CH SOT-23-6
标准包装: 1
接片: 65
电阻(欧姆): 30k
电路数: 1
温度系数: 标准值 150 ppm/°C
存储器类型: 易失
接口: I²C
电源电压: 1.8 V ~ 5.5 V,2.7 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 标准包装
其它名称: MCP47DA1T-A0E/OTDKR
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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