TNETX4080 datasheet(54/64 Pages) TI1

Part #	TNETX4080

Description	ThunderSWITCH IIE 8-PORT 10-/100-MBIT/S ETHERNETE SWITCH

PDF	64 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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54 / 64 page

TNETX4080

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

SPWS050A – AUGUST 1998 – REVISED NOVEMBER 1998

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

RDRAM interface

RDRAM (see Figure 14)

NO.

MIN

MAX

UNIT

tc(DX_CLK)

Cycle time DTX_CLK, DRX_CLK

3.33

2, 3

tw(DX_CLK)

Pulse duration, DTX_CLK, DRX_CLK low or high

45%

55%

tc(DX_CLK)

4, 5

tw(TICK)

Pulse duration, tick time

0.5

tcycle

6, 8

tsu(DBUS_DATA) Setup time, DBUS_DATA before tick

0.35

7, 9

th(DBUS_DATA)

Hold time, DBUS_DATA after tick

0.35

10, 11

td(DBUS_OUT)

Delay time, DBUS_DATA, DBUS_CTRL, DBUS_EN from tick

0.635

1.438

tc(DX_CLK)

tcycle†

Cycle time, internal clock

tc(DX_CLK)

† Not shown in Figure 14 due to scale

DBUS_DATA (in)

DTX_CLK

DRX_CLK

DBUS_CTRL

DBUS_EN

DBUS_DATA (out)

Figure 14. RDRAM

TNETX4080 Datasheet(PDF) 54 Page - Texas Instruments

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