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AX88178 Datasheet(PDF) 29 Page - ASIX Electronics Corporation |
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AX88178 Datasheet(HTML) 29 Page - ASIX Electronics Corporation |
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29 / 37 page ![]() AX88178 USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller 7.4.1.2 XIN125M TP_XIN125M TH_XIN125M TL_XIN125M TR_XIN125M TF_XIN125M VIH VIL Symbol Parameter Condition Min Typ Max Unit TP_XIN125M XIN125M clock cycle time 7.5 8.0 8.5 ns TH_XIN125M XIN125M clock high time 2.5 4.0 - ns TL_XIN125M XIN125M clock low time 2.5 4.0 - ns TR_XIN125M XIN125M rise time VIL (max) to VIH (min) - - 1.0 ns TF_XIN125M XIN125M fall time VIH (min) to VIL (max) - - 1.0 ns 7.4.2 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 7.4.3 GMII Timing (1000Mbps) Ttclk Ttch Ttcl GTX_CLK Tts Tth TXD [7:0] TX_EN, TX_ER Trst 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 ASIX ELECTRONICS CORPORATION 29 |
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