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1 概述
Realtek(瑞昱半导体)公司的 RTL8211F-CG/RTL8211FD-CG/RTL8211FI-CG/RTL8211FDI-CG是符合10Base-T,100Base-TX和1000Base-T IEEE 802.3标准的高度集成的以太网收发器。它提供了通过CAT.5 UTP电缆发送和接收以太网数据包的所有必要的物理层功能。 RTL8211FI和RTL8211FDI符合工业级标准。
RTL8211F(I)/RTL8211FD(I)使用先进DSP和模拟前端(AFE)技术,通过UTP电缆实现高速数据传输。在RTL8211F(I)/RTL8211FD(I)中实现诸如交叉检测和自动校正,极性校正,自适应均衡,串扰消除,回波消除,定时恢复和纠错的功能,以提供在10Mbps,100Mbps或1000Mbps时鲁棒发送和接收能力。
MAC和PHY之间的1000Base-T,10Base-T和100Base-TX数据传输是通过RGMII接口实现的。RTL8211F(I)/RTL8211FD(I)支持多种RGMII信号电压,包括3.3,2.5,1.8和1.5V。
2 RTL8211F-CG特征:
3 系统应用
此外,RTL8211F(I)/RTL8211FD(I)可用于任何需要UTP物理连接的以太网MAC的嵌入式系统。
3.1 RTL8211F(I)应用框图
3.2 RTL8211FD(I)应用框图
4 系统框图
5 管脚图
6 管脚说明
Interace | Pin No. | Pin name | Type | Description |
Transceiver Interface | 1 | MDIP0 | IO | the BI_DA+/- pair |
2 | MDIN0 | IO | ||
4 | MDIP1 | IO | the BI_DB+/- pair, | |
5 | MDIN1 | IO | ||
6 | MDIP2 | IO | the BI_DC+/- pair. | |
7 | MDIN2 | IO | ||
9 | MDIP3 | IO | the BI_DD+/- pair. | |
10 | MDIN3 | IO | ||
CLOCK | 36 | XTAL_IN | I | 25MHz Crystal Input. |
37 | XTAL_OUT/EXT_CLK | O | 25MHz Crystal Output. | |
35 | CLKOUT | O | 125/25MHz Reference Clock | |
RGMII | 20 | TXC | I | transmit reference clock |
18 | TXD0 | I | Transmit Data. Data is transmitted from MAC to PHY via TXD[3:0]. | |
17 | TXD1 | I | ||
16 | TXD2 | I | ||
15 | TXD3 | I | ||
19 | TXCTL | I | Transmit Control Signal from the MAC | |
27 | RXC/PHYAD1 | O | The continuous receive reference clock | |
25 | RXD0/RXDLY | O | Receive Data. Data is transmitted from PHY to MAC via RXD[3:0]. | |
24 | RXD1/TXDLY | O | ||
23 | RXD2/PLLOFF | O | ||
22 | RXD3/PHYAD0 | O | ||
26 | RXCTL/PHYAD2 | O | Receive Control Signal to the MAC | |
Management Interface | 13 | MDC | I | Management Data Clock |
14 | MDIO | IO/PU | Input/Output of Management Data | |
31 | INTB/PMEB | O/OD | Interrupt / Power Management Event | |
Reset | 12 | PHYRSTB | I | Hardware Reset. Active low. |
LED | 32 | LED0/CFG_EXT | O | High=Link Up at 10/100/1000Mbps |
33 | LED1/CFG_LDO0 | O | ||
34 | LED2/CFG_LDO1 | O | ||
Regulator and Reference | 39 | RSET | O | Reference (External Resistor Reference). |
30 | REG_OUT/LDO_OUT | O | For RTL8211F(I): Switching Regulator 1.0V Output. Connect to a 2.2µH or 4.7µH inductor. | |
Power and Ground | 29 | DVDD33 | P | Digital non-RGMII I/O Power. 3.3V |
28 | DVDD_RG | P | Digital RGMII I/O Pad Power | |
21 | DVDD10 | P | Digital Core Power. 1.0V | |
11,40 | AVDD33 | P | Analog Power. 3.3V. | |
3,8,38 | AVDD10 | P | Analog Power. 1.0V. | |
41 | GND | G | Ground. |
7 硬件配置说明
管脚序号 | 管脚名称 | 管脚类型 | 应用说明 |
35 | CLKOUT | O | 125M时钟源,如果不使用,必须保持悬空 |
14 | MDIO | IO/PU | 需加1.5K上拉电阻 |
22 | PHYAD0 | O/LI/PD | PHY[2:0] 物理地址设置 |
27 | PHYAD1 | O/LI/PD | |
26 | PHYAD2 | O/LI/PD | |
24 | TXDLY | O/LI/PD | 加上拉,增加2ns TX时钟延时 |
25 | RXDLY | O/LI/PD | 加上拉,增加2ns RX时钟延时 |
32 | CFG_EXT | O/LI/PD | 上拉:IO PAD选择外部电源 下拉:IO PAD选择内部LDO电源 |
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