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TNETX3151PGV データシート(PDF) 60 Page - Texas Instruments |
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TNETX3151PGV データシート(HTML) 60 Page - Texas Instruments |
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60 / 65 page ![]() TNETX3151 ThunderSWITCH ™ 12/3 ETHERNET™ SWITCH WITH 12 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS SPWS048A – MARCH 1998 – REVISED APRIL 1999 60 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 EEPROM interface operating characteristics over recommended operating conditions (see Figure 20) NO PARAMETER TNETX3150 TNETX3150A UNIT NO. PARAMETER MIN MAX MIN MAX UNIT fclock (ECLK) Clock frequency, ECLK 98 98 kHz 1 td (ECLKH–EDIOL) Delay time, from ECLK ↑ to EDIO↓ (see Note 9) 5 5 µs 2 td (EDIOL–ECLKL) Delay time, from EDIO ↓ to ECLK↓ (see Note 9) 5 5 µs 3 td (ECLKL–EDIOX) Delay time, from ECLK ↓ to EDIO changing (see Note 10) 0 0 µs 4 td (EDIOV–ECLKH) Delay time, from EDIO valid output to ECLK ↑ 0 0 µs 5 td (ECLKL–EDIOV) Delay time, from ECLK ↓ to EDIO valid 0 0 µs 6 td (ECLKL–EDIOX) Delay time, from ECLK ↓ to EDIO changing (see Note 11) 0 0 µs 7 td (ECLKH–EDIOX) Delay time, from ECLK ↑ to EDIO invalid 5 5 µs 8 td (EDIOV–ECLKH) Delay time, from EDIO valid input to ECLK ↑ 10 10 µs NOTES: 9. This is a start condition delay time during ECLK high. 10. This is a changing-data condition delay time for output EDIO. 11. This is a changing-data condition delay time for input EDIO. 7 ECLK (output) EDIO (output) EDIO (input) 1 6 4 8 Valid Valid Valid Valid 5 23 Figure 20. EEPROM |
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