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参数资料
| 型号： | KSZ8051RNL TR |
| 厂商： | Micrel Inc |
| 文件页数： | 18/59页 |
| 文件大小： | 0K |
| 描述： | TXRX PHY 10/T100 3.3V RMII 32QFN |
| 特色产品： | KSZ8051/8031/8021 Series |
| 标准包装： | 1 |
| 类型： | PHY 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RMII |
| 电源电压： | 1.8V，2.5V，3.3V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 标准包装 |
| 其它名称： | 576-3778-6 |
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Micrel, Inc.
KSZ8051MNL/RNL
July 2010
25
M9999-070910-1.0
Transmit Enable (TXEN)
TXEN indicates that the MAC is presenting dibits on TXD[1:0] for transmission. It is asserted synchronously with the first
dibit of the preamble and remains asserted while all dibits to be transmitted are presented on the RMII, and is negated
prior to the first REF_CLK following the final dibit of a frame.
TXEN transitions synchronously with respect to REF_CLK.
Transmit Data [1:0] (TXD[1:0])
TXD[1:0] transitions synchronously with respect to REF_CLK. When TXEN is asserted, TXD[1:0] are accepted for
transmission by the PHY.
TXD[1:0] is ”00” to indicate idle when TXEN is de-asserted. Values other than “00” on TXD[1:0] while TXEN is de-asserted
are ignored by the PHY.
Carrier Sense/Receive Data Valid (CRS_DV)
CRS_DV is asserted by the PHY when the receive medium is non-idle. It is asserted asynchronously on detection of
carrier. This is when squelch is passed in 10Mbps mode, and when 2 non-contiguous zeroes in 10 bits are detected in
100Mbps mode. Loss of carrier results in the de-assertion of CRS_DV.
So long as carrier detection criteria are met, CRS_DV remains asserted continuously from the first recovered dibit of the
frame through the final recovered dibit, and it is negated prior to the first REF_CLK that follows the final dibit. The data on
RXD[1:0] is considered valid once CRS_DV is asserted. However, since the assertion of CRS_DV is asynchronous
relative to REF_CLK, the data on RXD[1:0] is "00" until proper receive signal decoding takes place.
Receive Data [1:0] (RXD[1:0])
RXD[1:0] transitions synchronously with respect to REF_CLK. For each clock period in which CRS_DV is asserted,
RXD[1:0] transfers two bits of recovered data from the PHY.
RXD[1:0] is "00" to indicate idle when CRS_DV is de-asserted. Values other than “00” on RXD[1:0] while CRS_DV is de-
asserted are ignored by the MAC.
Receive Error (RXER)
RXER is asserted for one or more REF_CLK periods to indicate that a Symbol Error (e.g. a coding error that a PHY is
capable of detecting, and that may otherwise be undetectable by the MAC sub-layer) was detected somewhere in the
frame presently being transferred from the PHY.
RXER transitions synchronously with respect to REF_CLK. While CRS_DV is de-asserted, RX_ER has no effect on the
MAC.
Collision Detection
The MAC regenerates the COL signal of the MII from TXEN and CRS_DV.
RMII Signal Diagram
The KSZ8051RNL RMII pin connections to the MAC are shown in the following figures for 25MHz Clock Mode and 50MHz
Clock Mode.
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| KSZ8051RNLU TR | 功能描述:以太网 IC Single-Port 10/100BT PHY (Automotive) 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 |
| KSZ8051RNLU-TR | 功能描述:1/1 Transceiver Full RMII 32-QFN (5x5) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 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:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商器件封装:32-QFN（5x5） 标准包装:1 |
| KSZ8081MLXCA | 功能描述:以太网 IC 10/100 PHY, 0.11u 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 |
| KSZ8081MLXCA TR | 功能描述:以太网 IC 10/100 PHY, 0.11u 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 |
| KSZ8081MLXCATR | 制造商:Micrel Inc 功能描述:Ethernet Transceiver,PHY,MII,LQFP48 |
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