TNETX3150 datasheet(99/113 Pages) TI1

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TNETX3150/TNETX3150A

ThunderSWITCH™ 15-PORT 10-/100-MBIT/S ETHERNET™ SWITCH

SPWS027F – FEBRUARY 1997 – REVISED SEPTEMBER 1997

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

operating characteristics over recommended operating conditions (see Note 12 and Figure 40)

read cycle DIO interface

PARAMETER

TNETX3150

TNETX3150A

UNIT

NO.

PARAMETER

MIN

MAX

MIN

MAX

UNIT

tw(SRDY)

Pulse duration, SRDY high

td(SRNW)

Delay time, from SRDY

↓ to SRNW↓

td(SAD)

Delay time, from SRDY

↓ to SAD1–SAD0 invalid

td(SDATA)1

Delay time from SRDY

↓ to SDATA7–SDATA0 valid

td(SDATA)2

Delay time from SCS

↑ to SDATA7–SDATA0 invalid

td(SCS–SRDY)1

Delay time, SCS

↓ to SRDY↓

td(SCS–SRDY)2

Delay time, SCS

↑ to SRDY↑

NOTE 12: SRDY should be held high using an external pullup resistor to ensure correct system operation.

Address

Data

SCS

(input)

SRNW

(input)

SAD1–SAD0

(input)

SDATA7–SDATA0

(output)

SRDY

(output)

OSCIN

(input)

Figure 40. DIO Read Cycle

TNETX3150 Datasheet(PDF) 99 Page - Texas Instruments

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