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DRA821U4...ALM Folha de dados(PDF) 153 Page - Texas Instruments |
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DRA821U4...ALM Folha de dados(HTML) 153 Page - Texas Instruments |
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153 / 252 page  RMII4 RMII5 RMII[x]_ _ REF CLK RMII[x]_RXD[1:0], RMII[x]_CRS_DV, RMII[x]_RX_ER Figure 7-46. RMII[x]_RXD[1:0], RMII[x]_CRS_DV, RMII[x]_RXER Timing – RMII Mode Section 7.9.5.3.2.3, Section 7.9.5.2.1.3, and present switching characteristics for CPSW5G RMII transmit. 7.9.5.3.2.3 Switching Characteristics for RMII[x]_TXD[1:0], and RMII[x]_TXEN – RMII Mode NO. PARAMETER DESCRIPTION MIN TYP MAX UNIT RMII6 td(REF_CLK-TXD) Delay time, REF_CLK High to TXD[1:0] valid 2 10 ns td(REF_CLK-TXEN) Delay time, REF_CLK to TXEN valid 2 10 ns RMII7 tr(TXD) Rise Time, TXD Outputs 1 5 ns tr(TX_EN) Rise Time, TX_EN Output 1 5 ns RMII8 tf(TXD) Fall Time, TXD Outputs 1 5 ns tf(TX_EN) Fall Time, TX_EN Output 1 5 ns 7.9.5.3.3 CPSW5G RGMII Timings Section 7.9.5.3.3.1, Section 7.9.5.3.3.2, and Figure 7-47 present timing requirements for receive RGMII operation. 7.9.5.3.3.1 Timing Requirements for RGMII[x]_RCLK – RGMII Mode NO. PARAMETER DESCRIPTION MODE MIN TYP MAX UNIT RGMII1 tc(RXC) Cycle time, RXC 10Mbps 360 440 ns 100Mbps 36 44 ns 1000Mbps 7.2 8.8 ns RGMII2 tw(RXCH) Pulse duration, RXC high 10Mbps 160 240 ns 100Mbps 16 24 ns 1000Mbps 3.6 4.4 ns RGMII3 tw(RXCL) Pulse duration, RXC low 10Mbps 160 240 ns 100Mbps 16 24 ns 1000Mbps 3.6 4.4 ns RGMII4 tt(RXC) Transition time, RXC 10Mbps 0.75 ns 100Mbps 0.75 ns 1000Mbps 0.75 ns 7.9.5.3.3.2 Timing Requirements for RGMII[x]_RD[3:0], and RGMII[x]_RCTL – RGMII Mode NO. PARAMETER DESCRIPTION MODE MIN TYP MAX UNIT RGMII5 tsu(RD-RXC) Setup time, RD[3:0] valid before RXC high/low 10Mbps 1 ns 100Mbps 1 ns 1000Mbps 1 ns tsu(RX_CTL-RXC) Setup time, RX_CTL valid before RXC high/low 10Mbps 1 ns 100Mbps 1 ns 1000Mbps 1 ns www.ti.com DRA821U-Q1 SPRSP57D – APRIL 2020 – REVISED DECEMBER 2022 Copyright © 2022 Texas Instruments Incorporated Submit Document Feedback 153 Product Folder Links: DRA821U-Q1 |
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