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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DM385 датащи(PDF) 174 Page - Texas Instruments |
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DM385 датащи(HTML) 174 Page - Texas Instruments |
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174 / 281 page  1 EMAC[x]_MTCLK (Input) EMAC[x]_M EMAC[x]_M EMAC[x]_M TXD3− TXD0, TXEN (Outputs) EMAC[x]_MRCLK (Input) 1 2 EMAC[x]_M EMAC[x]_M EMAC[x]_M EMAC[x]_M RXD3− RXD0, RXDV, RXER (Inputs) DM385, DM388 SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 www.ti.com Table 8-13. Timing Requirements for EMAC [G]MII Receive 10/100/1000 Mbit/s (see Figure 8-11) OPP100/OPP120/Turbo/Nitro 1000 Mbps (1 100/10 Mbps NO. UNIT Gbps) MIN MAX MIN MAX tsu(MRXD-MRCLK) Setup time, receive selected signals valid before 1 tsu(MRXDV-MRCLK) 3.14 8 ns EMAC[1:0]_MRCLK tsu(MRXER-MRCLK) th(MRCLK-MRXD) Hold time, receive selected signals valid after 2 th(MRCLK-MRXDV) 1.09 8 ns EMAC[1:0]_MRCLK th(MRCLK-MRXER) Figure 8-11. EMAC Receive Interface Timing [G]MII Operation Table 8-14. Switching Characteristics Over Recommended Operating Conditions for EMAC [G]MII Transmit 10/100 Mbits/s (see Figure 8-12) OPP100/OPP120/ Turbo/Nitro NO. PARAMETER UNIT 100/10 Mbps MIN MAX td(MTXCLK-MTXD) 1 Delay time, EMAC[x]_MTCLK to transmit selected signals valid 0 25 ns td(MTCLK-MTXEN) Table 8-15. Switching Characteristics Over Recommended Operating Conditions for EMAC [G]MII Transmit 1000 Mbits/s (see Figure 8-12) OPP100/OPP120/ Turbo/Nitro NO. PARAMETER UNIT 1000 Mbps (1 Gbps) MIN MAX td(GMTCLK-MTXD) 1 Delay time, EMAC[x]_GMTCLK to transmit selected signals valid 0.5 5 ns td(GMTCLK-MTXEN) Figure 8-12. EMAC Transmit Interface Timing [G]MII Operation 174 Peripheral Information and Timings Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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