| 전자부품 데이터시트 검색엔진 |
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TNETX4090GGP 데이터시트(PDF) 71 Page - Texas Instruments |
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TNETX4090GGP 데이터시트(HTML) 71 Page - Texas Instruments |
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71 / 78 page ![]() TNETX4090 ThunderSWITCH II™ 9-PORT 100-/1000-MBIT/S ETHERNET™ SWITCH SPWS044E – DECEMBER 1997 – REVISED AUGUST 1999 71 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 EEPROM interface For further information on EEPROM interface timing, refer to the 24C02 or 24C08 serial EEPROM data sheets. EEPROM writes (see Figure 27) NO. MIN MAX UNIT 1 tsu(EDIO:Start) Setup time, start condition during ECLK high 383 tc 2 th(EDIO:Start) Hold time, start condition during ECLK high 383 tc 3 th(EDIO:Data) Hold time, data after ECLK ↓ 0 tc 4 tsu(EDIO:Data) Setup time, data before ECLK ↑ 383 tc 5 tw(ECLK) Pulse duration, ECLK low during start/stop 766 tc 6 tw(ECLK) Pulse duration, ECLK high during start/stop 766 tc 7 tw(ECLK:Data) Pulse duration, ECLK high during data 383 tc 8 tw(ECLK:Data) Pulse duration, ECLK low during data 766 tc 9 fclock(ECLK) Clock frequency, ECLK 98 kHz EDIO (out) 7 8 4 2 1 3 5 6 ECLK Figure 27. EEPROM Writes EEPROM reads (see Figure 28) NO. MIN MAX UNIT 1 tsu(EDIO) Setup time, EDIO (in) before ECLK ↑ 10 ns 2 th(EDIO) Hold time, EDIO (in) after ECLK ↓ 0 ns ECLK 1 2 EDIO (in) Figure 28. EEPROM Reads |
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