1.2 MII/RMII/GMII/RGMII接口 MII(Media Independent Interface)/RMII(Reduced MII)接口:支持10Mbit/s和100Mbit/s数据传输模式。 GMII(Gigabit Media Independent Interface)/RGMII(Reduced GMII)接口:支持10Mbit/s、100Mbit/s以及1000Mbit/s数据传输模 1.3 MDIO接口 MDI(Management Data Input/Output)包含数据线MDIO...
虽然RGMII信号线减半,但TXC/RXC时钟仍为125Mhz,为了达到1000Mbit的传输速率,TXD/RXD信号线在时钟上升沿发送接收GMII接口中的TXD[3:0]/RXD[3:0],在时钟下降沿发送接收TXD[7:4]/RXD[7:4],并且信号TX_CTL反应了TX_EN和TX_ER状态,即在TXC上升沿发送TX_EN,下降沿发送TX_ER,同样的道理试用于RX_CTL,下图为...
虽然RGMII信号线减半,但TXC/RXC时钟仍为125Mhz,为了达到1000Mbit的传输速率,TXD/RXD信号线在时钟上升沿发送接收GMII接口中的TXD[3:0]/RXD[3:0],在时钟下降沿发送接收TXD[7:4]/RXD[7:4],并且信号TX_CTL反应了TX_EN和TX_ER状态,即在TXC上升沿发送TX_EN,下降沿发送TX_ER,同样的道理试用于RX_CTL,下图为...
phy-handle = ; phy-mode = "rgmii-id"; phy0: ethernet-phy@1 { reg = ; ti,rx-internal-delay =; ti,tx-internal-delay =; ti,fifo-depth = </dp83867_phycr_fifo_depth_4_b_nib></dp83867_phycr_fifo_depth_4_b_nib></dp83867_phycr_fifo_depth_4_b_nib></dp83867_phycr_fifo_dep...
本文主要介绍以太网的MAC(Media Access Control,即媒体访问控制子层协议)和PHY(物理层)之间的MII(Media Independent Interface ,媒体独立接口),以及MII的各种衍生版本——GMII、SGMII、RMII、RGMII等。 从硬件的角度看,以太网接口电路主要由MAC(Media Access Control)控制器和物理层接口PHY(Physical Layer,PHY)两大部分...
PHY_INTERFACE_MODE_2500BASEX, 2830 PHY_INTERFACE_MODE_XGMII, 2931 PHY_INTERFACE_MODE_XAUI, 3032 PHY_INTERFACE_MODE_RXAUI, @@ -55,6 +57,8 @@ static const char * const phy_interface_strings[] = { 5557 [PHY_INTERFACE_MODE_RGMII_RXID]="rgmii-rxid", ...
其中phy-mode节点的值如下: phy-mode: string, operation mode of the PHY interface; supported values are “mii”, “gmii”, “sgmii”, “qsgmii”, “tbi”, “rev-mii”, “rmii”, “rgmii”,“rgmii-id”, “rgmii-rxid”, “rgmii-txid”, “rtbi”, “smii”, “xgmii”; this is now...
phy-mode = "rgmii-id";phy-handle = <ðphy0>;phy-reset-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>;phy-reset-post-delay = <150>;phy-reset-duration = <10>;status = "okay"; mdio {compatible = "snps,dwmac-mdio";#address-cells = <1>;#size-cells = <...
static int m88e1111_config_init_rgmii_delays(struct phy_device *phydev) { int err; int temp; temp = phy_read(phydev, MII_M1111_PHY_EXT_CR); if (temp < 0) return temp; if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) { temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_...
phy-mode = "rgmii-id"; fixed-link { speed = <1000>; full-duplex; }; mdio0 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dwmac-mdio"; XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 谢谢、致以诚挚的问候 ...