RMII接口的MAC模式定义:信号名和数量DirectionDescriptionBelong ToCLK REF1InputRefere 3、nce Clock50MHzTXDQ-12OutputTransmit DataMAC到物理层TX EN1OutputTransmit Enable发送數据接口RXD0:12InputReceive Data物理到MAC层RX_ER1InputReceive Error的接收数据接口CRS DV1InputCollision and Data ValidTotal bus Width...
TABLE 1. RMII Specification Signals Signal Name REF_CLK Direction (with respect to the PHY) Input CRS_DV RXD[1:0] TX_EN TXD[1:0] RX_ER Output Output Input Input Output Direction (with respect to the MAC) Input or Output Input Input Output Output Input (Not required) Use Synchronous ...
gpio_direction_output(FEC_RST_PAD, 0); mdelay(15); gpio_direction_output(FEC_RST_PAD, 1); mdelay(100); } static int setup_fec(void) { struct iomuxc_gpr_base_regs *gpr = (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR; setup_iomux_fec(); /* Enable RMII ...
MX6_PAD_ENET_REF_CLK__GPIO1_IO23 | MUX_PAD_CTRL(NO_PAD_CTRL), }; static void setup_iomux_enet(void) { imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads)); /* Reset PHY */ gpio_direction_output(ETH_PHY_RESET, 0); udelay(500); gpio_set_value(ETH_PHY_RESET...
4. There is an ambiguity in the table and diagram. The table has REF_CLK high toTXD[1:0] validfor #1, but #1 is drawn from REF_CLK high toTXD[1:0] middle of transition. I think that regardless of which is true, my assertion is still correct, but the scale of my assertion chan...
TABLE 1. RMII Specification Signals Direction (with respect to the PHY) Direction (with respect to the MAC) Signal Name Use REF_CLK CRS_DV RXD[1:0] TX_EN TXD[1:0] RX_ER Input Output Output Input Input Output Input or Output Input Input Output Output Input (Not required) Synchronous ...
RMII接口的MAC模式定义:信号名称数量DirectionDescriptionBelong ToCLK REF1InputReference Clock50MHzTXDQ:12OutputTransmit DataMAC到物理层 发送数据接口TX EN1OutputTransmit EnableRXD0:12InputReceive Data物理劃MAC层 的接收数据接口RX ER1Input 9、Receive ErrorCRS DV1InputCollision and Data ValidTotal bus ...
gpio_direction_output(FEC_RST_PAD, 0); mdelay(15); gpio_direction_output(FEC_RST_PAD, 1); mdelay(100); } static int setup_fec(void) { struct iomuxc_gpr_base_regs *gpr = (struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR; setup_iomux_fec(); /* Enable RMII TX clk outp...
Is it enough to have only the external reference clock signal ENET1_REF_CLK1 of 50 MHz, connected to pin GPIO1_IO05 for working Ethernet MAC in RMII mode? Do I need to configure the registers PLL_ENETn and ENET1_TX_CLK, if the frequency of the external clock signal is 50 MHz? I...
Hello, We use LAN8720A as RMII phy on i.Mx6q, now we can set its IP but don't transfer data. RMII_REF_CLK_50M is connected to GPIO_16.