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数据搜索系统，热门电子元器件搜索 |
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AX88178 数据表(PDF) 28 Page - ASIX Electronics Corporation |
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AX88178 数据表(HTML) 28 Page - ASIX Electronics Corporation |
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28 / 35 page  ASIX ELECTRONICS CORPORATION 28 AX88178 L USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller 7.3.2 Reset Timing XIN12M RESET_N Symbol Description Min Typ Max Units Trst Reset pulse width (6ms ~10ms) after XIN12M is running 72000 - - XIN12M clock cycle 7.3.3 GMII Timing (1000Mbps) Ttclk Ttch Ttcl GTX_CLK Tts Tth TXD [7:0] TX_EN, TX_ER Symbol Description Min Typ Max Units Ttclk GTX_CLK clock cycle time 7.5 8.0 8.5 ns Ttch GTX_CLK clock high time 2.5 4.0 - ns Ttcl GTX_CLK clock low time 2.5 4.0 - ns Tts TXD [7:0], TX_EN, TX_ER setup time 4.0 - - ns Tth TXD [:0], TX_EN, TX_ER hold time 0.5 - - ns Trclk Trch Trcl RX_CLK Trs Trh RXD [7:0] RX_DV, RX_ER Symbol Description Min Typ Max Units Trclk RX_CLK clock cycle time 7.5 8.0 8.5 ns Trch RX_CLK clock high time 2.5 4.0 - ns Trcl RX_CLK clock low time 2.5 4.0 - ns Trs RXD [7:0], RX_DV, and RX_ER setup time 2.0 - - ns Trh RXD [7:0], RX_DV, and RX_ER hold time 0.0 - - ns Trst |
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