收藏本站
Ethernet and MII management
The following figure shows the RMII receive AC timing diagram.
REF_CLK
RXD[1:0]
CRS_DV
t RMXH
t RMX
t RMXF
Valid Data
t RMXR
RX_ER
t RMRDVKH
t RMRDXKH
Figure 16. RMII receive AC timing diagram
8.3
Ethernet management interface electrical characteristics
The electrical characteristics specified here apply to MII management interface signals MDIO
(management data input/output) and MDC (management data clock). The electrical characteristics for
MII, and RMII are specified in Section 8.1, “Ethernet controller (10/100 Mbps)—MII/RMII electrical
characteristics.”
8.3.1
MII management DC electrical characteristics
MDC and MDIO are defined to operate at a supply voltage of 3.3 V. The DC electrical characteristics for
MDIO and MDC are provided in the following table.
Table 24. MII management DC electrical characteristics when powered at 3.3 V
Parameter
Supply voltage (3.3 V)
Symbol
OV DD
Conditions
—
Min
3
Max
3.6
Unit
V
Output high voltage
Output low voltage
V OH
V OL
I OH = –1.0 mA
I OL = 1.0 mA
OV DD = Min
OV DD = Min
2.40
GND
OV DD + 0.3
0.50
V
V
Input high voltage
Input low voltage
Input current
V IH
V IL
I IN
—
—
0 V ≤ V IN ≤ OV DD
2.00
—
—
—
0.80
±5
V
V
μ A
8.3.2
MII management AC electrical specifications
The following table provides the MII management AC timing specifications.
Table 25. MII management AC timing specifications
At recommended operating conditions with OV DD is 3.3 V ± 300mV.
Parameter/Condition
MDC frequency
MDC period
MDC clock pulse width high
Symbol 1
f MDC
t MDC
t MDCH
Min
—
—
32
Typical
2.5
400
—
Max
—
—
—
Unit
MHz
ns
ns
Note
—
—
—
MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 3
Freescale Semiconductor
27
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
TWR-PXN20-KIT TOWER SYSTEM KIT PXN20
TWR-PXS2010-KIT TOWER SYSTEM KIT PXS2010
TWR-PXS3020-KIT TOWER SYSTEM KIT PXS3020
TWR-S08DC-PT60 TOWER SYSTEM BOARD S08PT60
TWR-S08JE128-KIT KIT TOWER FOR MC9S08JE
TWR-S08LH64 TOWER SYSTEM S08LH64
TWR-S08LL64 TOWER SYSTEM S08LL64
TWR-S08MM128 TOWER SYSTEM BOARD MC9S08MM128
相关代理商/技术参数
TWR-P1025 功能描述:开发板和工具包 - 其他处理器 TOWER MODULE P1025 RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWR-P1025-KIT 功能描述:开发板和工具包 - 其他处理器 QORIQ P1 TWR KIT RoHS:否 制造商:Freescale Semiconductor 产品:Development Systems 工具用于评估:P3041 核心:e500mc 接口类型:I2C, SPI, USB 工作电源电压:
TWRPI-BLE-DEMO 功能描述:蓝牙/802.15.1 开发工具 TWRPI-BLE-DEMO RoHS:否 制造商:Panasonic Electronic Components 产品:Bluetooth Evaluation Kit 工具用于评估:PAN1721 频率:2.4 GHz 接口类型:I2C 工作电源电压:2 V to 3.6 V
TWRPI-MMA6900 功能描述:加速传感器开发工具 MMA6900 SENSOR PLUG-IN RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V
TWRPI-MMA845XQ 功能描述:加速传感器开发工具 Accel TWRPI RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V
TWRPI-MPL115A 制造商:Freescale Semiconductor 功能描述:Tower Board Plug-in MPL115A Pressure Sensor 制造商:Freescale Semiconductor 功能描述:MPL115 SENSOR PLUGIN HARDWARE ONLY
TWRPI-PROXIMITY 制造商:Freescale Semiconductor 功能描述:TOWER SYSTEM, PLUG-IN, CAPACITIVE PROXIMITY SENSOR, USE W/TO - Boxed Product (Development Kits) 制造商:Freescale Semiconductor 功能描述:TOUCH BOARD EVALUATION 制造商:Freescale Semiconductor 功能描述:CAP PROXIMITY SENSOR, PLUG-IN BOARD 制造商:Freescale Semiconductor 功能描述:Capacitive Proximity Sensor Plug-In for the Tower System 制造商:Freescale Semiconductor 功能描述:Redesign of TWRPI-MUTRES 制造商:Freescale Semiconductor 功能描述:SENSOR PLUG-IN, TOWER SYSTEMS, Accessory Type:Capacitive Proximity Sensor Plug-In, For Use With:Freescale Tower Systems, Features:Proximity Detection upto 1", 4 Discrete Touch-sensing Electrodes, Compatible with TSS 3.1
TWRPI-ROTARY 制造商:Freescale Semiconductor 功能描述:TOWER SYSTEM, PLUG-IN, CAPACITIVE TOUCH ROTARY, USE W/TOWER - Bulk 制造商:Freescale Semiconductor 功能描述:HDWR ROTARY PLUG-IN FOR TOWER 制造商:Freescale Semiconductor 功能描述:TWRPI-ROTARY