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AM261...ZEJQ1 数据表(PDF) 110 Page - Texas Instruments |
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AM261...ZEJQ1 数据表(HTML) 110 Page - Texas Instruments |
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110 / 218 page  6.11.5 Peripherals 6.11.5.1 3-port Gigabit Ethernet MAC (CPSW) Note The CPSW supports two external Ethernet ports and one internal CPDMA host port. For more details about features and additional description information on the device CPSW (3-port Gigabit Ethernet MAC), see the Gigabit Ethernet Switch section in the device TRM. 6.11.5.1.1 CPSW MDIO Timing 6.11.5.1.1.1 CPSW MDIO Timing Conditions PARAMETER MIN MAX UNIT INPUT CONDITIONS SRI Input Slew Rate 0.9 3.6 V/ns OUTPUT CONDITIONS CL Output Load Capacitance 10 20 pF 6.11.5.1.1.2 CPSW MDIO Timing Requirements NO. PARAMETER DESCRIPTION MIN MAX UNIT MDIO1 tsu(MDIO-MDC) Setup time, MDIO_DATA valid before MDIO_CLK high 25 ns MDIO2 th(MDC-MDIO) Hold time, MDIO_DATA valid after MDIO_CLK high 0 ns 6.11.5.1.1.3 CPSW MDIO Switching Characteristics NO. PARAMETER DESCRIPTION MIN MAX UNIT MDIO3 tc(MDC) Cycle time, MDIO_CLK 50 ns MDIO4 tw(MDCH) Pulse duration, MDIO_CLK high 19 ns MDIO5 tw(MDCL) Pulse duration, MDIO_CLK low 19 ns MDIO7 td(MDC_MDIO) Delay time, MDIO_CLK low to MDIO_DATA valid –10 10 ns MDIO3 MDIO1 MDIO2 MDIO7 MDIO4 MDIO5 MDIO[x]_MDC MDIO[x]_MDIO (input) MDIO[x]_MDIO (output) CPSW2G_MDIO_TIMING_01 Figure 6-10. CPSW MDIO Timing Requirements and Switching Characteristics AM2612, AM2611, AM2611-Q1, AM2612-Q1 SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025 www.ti.com 110 Submit Document Feedback Copyright © 2025 Texas Instruments Incorporated Product Folder Links: AM2612 AM2611 AM2611-Q1 AM2612-Q1 |
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