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参数资料
| 型号： | KSZ8041MNLU TR |
| 厂商： | Micrel Inc |
| 文件页数： | 18/54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 |
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Micrel, Inc.
KSZ8041NL/RNL
September 2010
25
M9999-090910-1.4
Receive Data Valid (RXDV)
RXDV is driven by the PHY to indicate that the PHY is presenting recovered and decoded nibbles on RXD[3:0].
In 10Mbps mode, RXDV is asserted with the first nibble of the SFD (Start of Frame Delimiter), “5D”, and remains
asserted until the end of the frame.
In 100Mbps mode, RXDV is asserted from the first nibble of the preamble to the last nibble of the frame.
RXDV transitions synchronously with respect to RXC.
Receive Data [3:0] (RXD[3:0])
RXD[3:0] transitions synchronously with respect to RXC. For each clock period in which RXDV is asserted, RXD[3:0]
transfers a nibble of recovered data from the PHY.
Receive Error (RXER)
RXER is asserted for one or more RXC 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 RXC. While RXDV is de-asserted, RXER has no effect on the MAC.
Carrier Sense (CRS)
CRS is asserted and de-asserted as follows:
In 10Mbps mode, CRS assertion is based on the reception of valid preambles. CRS de-assertion is based on the
reception of an end-of-frame (EOF) marker.
In 100Mbps mode, CRS is asserted when a start-of-stream delimiter, or /J/K symbol pair is detected. CRS is de-
asserted when an end-of-stream delimiter, or /T/R symbol pair is detected. Additionally, the PMA layer de-asserts
CRS if IDLE symbols are received without /T/R.
Collision (COL)
COL is asserted in half-duplex mode whenever the transmitter and receiver are simultaneously active on the line. This is
used to inform the MAC that a collision has occurred during its transmission to the PHY.
COL transitions asynchronously with respect to TXC and RXC.
Reduced MII (RMII) Data Interface
The Reduced Media Independent Interface (RMII) specifies a low pin count Media Independent Interface (MII). It provides
a common interface between physical layer and MAC layer devices, and has the following key characteristics:
Supports 10Mbps and 100Mbps data rates.
Uses a 50MHz reference clock.
Provides independent 2-bit wide (di-bit) transmit and receive data paths.
Contains two distinct groups of signals: one for transmission and the other for reception.
The KSZ8041NL is configured in RMII mode after it is power-up or reset with the following:
A 50MHz reference clock connected to REFCLK (pin 9).
CONFIG[2:0] (pins 18, 29, 28) set to ‘001’.
The KSZ8041RNL is configured in RMII mode and outputs the 50MHz RMII reference clock to the MAC on REF_CLK (pin
19) after it is power-up or reset with the following:
A 25MHz crystal connected to XI (pin 9) and XO (pin 8), or a 25MHz reference clock connected to XI (pin 9).
CONFIG[2:0] (pins 18, 29, 28) set to ‘001’.
In RMII mode, unused MII signals, TXD[3:2] (pins 27, 26), are tied to ground.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ8041NL | 制造商:Micrel Inc 功能描述:10BASE-T/100BASE ETHERNET TRX SMD 制造商:Micrel Inc 功能描述:10BASE-T/100BASE ETHERNET TRX, SMD 制造商:Micrel Inc 功能描述:10BASE-T/100BASE ETHERNET TRX, SMD, Data Rate:100Mbps, Ethernet Type:IEEE 802.3u 制造商:Micrel Inc 功能描述:10BASE-T/100BASE ETHERNET TRX, SMD, Data Rate:100Mbps, Ethernet Type:IEEE 802.3u, Supply Voltage Max:3.3V, Digital IC Case Style:QFN, No. of Pins:32, IC Interface Type:MII, RMII, MSL:MSL 2 - 1 year, SVHC:No SVHC (19-Dec-2012), Base , RoHS Compliant: Yes |
| KSZ8041NL AM | 功能描述:以太网 IC Physical Layer Transceiver 10/100BASE-T/TX (Lead Free) - Automotive Qualified 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 |
| KSZ8041NL AM TR | 功能描述:以太网 IC Physical Layer Transceiver 10/100BASE-T/TX (Lead Free) - Automotive Qualified 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 |
| KSZ8041NL TR | 功能描述:以太网 IC Physical Layer Transceiver 10/100BASE-T/TX (Lead Free) 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 |
| KSZ8041NL_08 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:10Base-T/100Base-TX Physical Layer Transceiver |
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