- 您现在的位置：买卖IC网 > PDF目录16549 > KSZ8031RNL-EVAL (Micrel Inc)BOARD EVALUATION FOR KSZ8031RNL PDF资料下载
参数资料
| 型号： | KSZ8031RNL-EVAL |
| 厂商： | Micrel Inc |
| 文件页数： | 5/43页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR KSZ8031RNL |
| 标准包装： | 1 |
| 主要目的： | 接口，以太网 PHY |
| 嵌入式： | 否 |
| 已用 IC / 零件： | KSZ8031RNL |
| 已供物品： | 板 |
| 相关产品： | 576-3843-6-ND - TXRX PHY 100BASE TX 3.3V 24QFN 576-3843-1-ND - TXRX PHY 100BASE TX 3.3V 24QFN 576-3788-ND - TXRX PHY 10/100 3.3V 24-QFN 576-3843-2-ND - TXRX PHY 100BASE TX 3.3V 24QFN 576-3741-5-ND - TXRX PHY 100BASE TX 3.3V 24QFN |
| 其它名称： | 576-3862 |
第1页第2页第3页第4页当前第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页
Micrel, Inc.
KSZ8021RNL / KSZ8031RNL
August 2010
13
M9999-082710-1.0
10Base-T Receive
On the receive side, input buffer and level detecting squelch circuits are employed. A differential input receiver circuit and
a PLL performs the decoding function. The Manchester-encoded data stream is separated into clock signal and NRZ data.
A squelch circuit rejects signals with levels less than 400 mV or with short pulse widths to prevent noise at the RXP and
RXM inputs from falsely triggering the decoder. When the input exceeds the squelch limit, the PLL locks onto the
incoming signal and the KSZ8021/31RNL decodes a data frame. The receive clock is kept active during idle periods in
between data reception.
Scrambler/De-Scrambler (100Base-TX Only)
The scrambler is used to spread the power spectrum of the transmitted signal to reduce EMI and baseline wander, and
the de-scrambler is needed to recover the scrambled signal.
PLL Clock Synthesizer
The KSZ8021/31RNL in RMII – 25MHz Clock Mode generates all internal clocks and all external clocks for system timing
from an external 25MHz crystal, oscillator, or reference clock. For the KSZ8021/31RNL in RMII – 50MHz Clock Mode,
these clocks are generated from an external 50MHz oscillator or system clock.
Auto-Negotiation
The KSZ8021/31RNL conforms to the auto-negotiation protocol, defined in Clause 28 of the IEEE 802.3 Specification.
Auto-negotiation allows UTP (Unshielded Twisted Pair) link partners to select the highest common mode of operation.
During auto-negotiation, link partners advertise capabilities across the UTP link to each other, and then compare their own
capabilities with those they received from their link partners. The highest speed and duplex setting that is common to the
two link partners is selected as the mode of operation.
The following list shows the speed and duplex operation mode from highest to lowest priority.
Priority 1: 100Base-TX, full-duplex
Priority 2: 100Base-TX, half-duplex
Priority 3: 10Base-T, full-duplex
Priority 4: 10Base-T, half-duplex
If auto-negotiation is not supported or the KSZ8021/31RNL link partner is forced to bypass auto-negotiation, then the
KSZ8021/31RNL sets its operating mode by observing the signal at its receiver. This is known as parallel detection, and
allows the KSZ8021/31RNL to establish link by listening for a fixed signal protocol in the absence of auto-negotiation
advertisement protocol.
Auto-negotiation is enabled by either hardware pin strapping (ANEN_SPEED, pin 23) or software (register 0h, bit [12]).
By default, auto-negotiation is enabled after power-up or hardware reset. Afterwards, auto-negotiation can be enabled or
disabled by register 0h, bit [12]. If auto-negotiation is disabled, the speed is set by register 0h, bit [13], and the duplex is
set by register 0h, bit [8].
The auto-negotiation link up process is shown in Figure 1.
相关PDF资料 |
PDF描述 |
|---|---|
| HBM10DRTF | CONN EDGECARD 20POS DIP .156 SLD |
| H3BKH-5006G | IDC CABLE - HSR50H/AE50G/HPK50H |
| GCM25DTKN | CONN EDGECARD 50POS DIP .156 SLD |
| ESC10DRYI-S13 | CONN EDGECARD 20POS .100 EXTEND |
| GCM25DTKH | CONN EDGECARD 50POS DIP .156 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KSZ8031RNLI | 功能描述:TXRX PHY 10/100 3.3V 24-QFN RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
| KSZ8031RNLI TR | 功能描述:以太网 IC 3.3V, 10Base-T/100Base-TX Physical Layer Transceiver w/ RMII Support (24-QFN, Industrial Grade) 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 |
| KSZ8031RNLITR | 制造商:Micrel Inc 功能描述:Ethernet transceiver,PHY,RMII,QFN24 |
| KSZ8031RNLI-TR | 功能描述:1/1 Transceiver Full RMII 24-QFN (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:过期 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:24-VFQFN 裸露焊盘 供应商器件封装:24-QFN（4x4） 标准包装:1 |
| KSZ8031RNL-TR | 功能描述:1/1 Transceiver Full RMII 24-QFN (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:过期 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:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商器件封装:24-QFN（4x4） 标准包装:1 |
发布紧急采购，3分钟左右您将得到回复。