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LAN8710AI 数据表(PDF) 75 Page - Microchip Technology |
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LAN8710AI 数据表(HTML) 75 Page - Microchip Technology |
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75 / 82 page  Small Footprint MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology Datasheet SMSC LAN8710A/LAN8710Ai 75 Revision 1.4 (08-23-12) DATASHEET 5.5.5 RMII Interface Timing Note 5.19 Timing was designed for system load between 10 pf and 25 pf. Figure 5.6 RMII Timing Table 5.10 RMII Timing Values SYMBOL DESCRIPTION MIN MAX UNITS NOTES tclkp CLKIN period 20 ns tclkh CLKIN high time tclkp*0.35 tclkp*0.65 ns tclkl CLKIN low time tclkp*0.35 tclkp*0.65 ns toval RXD[1:0], RXER, CRS_DV output valid from rising edge of CLKIN 14.0 ns Note 5.19 tohold RXD[1:0], RXER, CRS_DV output hold from rising edge of CLKIN 3.0 ns Note 5.19 tsu TXD[1:0], TXEN setup time to rising edge of CLKIN 4.0 ns Note 5.19 tihold TXD[1:0], TXEN input hold time after rising edge of CLKIN 1.5 ns Note 5.19 CLKIN (REF_CLK) RXD[1:0], RXER CRS_DV tclkh tclkl tclkp toval tohold toval toval tohold tsu TXD[1:0] TXEN tihold tsu tihold tihold tsu tihold |
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