TNETX4080GGP datasheet(57/64 Pages) TI1

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TNETX4080

ThunderSWITCH II™ 8-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS050A – AUGUST 1998 – REVISED NOVEMBER 1998

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 17)

NO.

MIN

MAX

UNIT

tsu(EDIO:Start)

Setup time, ECLK high before EDIO

↓

383

th(EDIO:Start)

Hold time, ECLK high after EDIO

↓

383

th(EDIO:Data)

Hold time, data after ECLK

↓

tsu(EDIO:Data)

Setup time, data before ECLK

↑

383

tw(ECLK)

Pulse duration, ECLK low during start/stop

766

tw(ECLK)

Pulse duration, ECLK high during start/stop

766

tw(ECLK:Data)

Pulse duration, ECLK high during data

383

tw(ECLK:Data)

Pulse duration, ECLK low during data

766

fclock(ECLK)

Clock frequency, ECLK

kHz

EDIO (out)

ECLK

Figure 17. EEPROM Writes

EEPROM reads (see Figure 18)

NO.

MIN

MAX

UNIT

tsu(EDIO)

Setup time, EDIO (in) before ECLK

↑

th(EDIO)

Hold time, EDIO (in) after ECLK

↓

ECLK

EDIO (in)

Figure 18. EEPROM Reads

TNETX4080GGP 数据表(PDF) 57 Page - Texas Instruments

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