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TNETX3150 数据表(PDF) 108 Page - Texas Instruments |
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TNETX3150 数据表(HTML) 108 Page - Texas Instruments |
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108 / 113 page ![]() TNETX3150/TNETX3150A ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997 108 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements over recommended operating conditions (see Figure 50) power-on reset NO TNETX3150 TNETX3150A UNIT NO. MIN MAX MIN MAX UNIT 1 td(OSCIN) Delay time, from VCC↑ to RESET↑ 25 25 ms 2 td(RESET) Delay time, from OSCIN ↑ to RESET↑ 25 25 ms 3 td(AUTO) Delay time, from RESET ↑ to EEPROM autoload complete 50 50 ms OSCIN (input) VCC(5V) (input) VCC (input) 1 2 RESET (input) Normal Operation Signals† Valid † MXXCOL, MXXCRS, MXXPROTOCOL, MXXDUPLEX, MXXLINK, MXXRCLK, MXXRXD0, MXXRXD1, MXXRXD2, MXXRXD3, MXXRXD4, M00RXD5, M00RXD6, M00RXD7, M00RXDV, M00RXDVX, MXXRXER, MXXSPEED, MXXTCLK, M00UPLINK, DD00–DD35, EAM15–EAM00, SDATA7–SDATA0, SAD1, SAD0, SCS, SRNW, EDIO, TDI, TMS, TRST, TCLK, OSCIN 3 Figure 50. Power-On Reset Timing |
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