TNETX3270 datasheet(61/66 Pages) TI1

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TNETX3270

ThunderSWITCH

™ 24/3 ETHERNET™ SWITCH

WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS

SPWS043B – NOVEMBER 1997 – REVISED APRIL 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

EEPROM interface

operating characteristics over recommended operating conditions (see Figure 21)

PARAMETER

TNETX3150

TNETX3150A

UNIT

NO.

PARAMETER

MIN

MAX

MIN

MAX

UNIT

fclock (ECLK)

Clock frequency, ECLK

kHz

td (ECLKH–EDIOL)

Delay time, from ECLK

↑ to EDIO↓ (see Note 9)

µs

td (EDIOL–ECLKL)

Delay time, from EDIO

↓ to ECLK↓ (see Note 9)

µs

td (ECLKL–EDIOX)

Delay time, from ECLK

↓ to EDIO changing (see Note 10)

µs

td (EDIOV–ECLKH)

Delay time, from EDIO valid output to ECLK

↑

µs

td (ECLKL–EDIOV)

Delay time, from ECLK

↓ to EDIO valid

µs

td (ECLKL–EDIOX)

Delay time, from ECLK

↓ to EDIO changing (see Note 11)

µs

td (ECLKH–EDIOX)

Delay time, from ECLK

↑ to EDIO invalid

µs

td (EDIOV–ECLKH)

Delay time, from EDIO valid input to ECLK

↑

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.

ECLK

(output)

EDIO

(output)

EDIO

(input)

Valid

Figure 21. EEPROM

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