USB2524 datasheet(17/57 Pages) SMSC

17 / 57 page

Chapter 5 Switching Hub Block Diagram

Figure 5.1 USB2524 Switching Hub Block Diagram

U p s tream

BUS

U p stream

PH Y

U p s tream

U SB D a ta

R e p eater

C ontro lle r

SIE

Se ria l

In te rface

S w itc h ing Logic

D o w n stream

PH Y # 1

Po rt # 1

OC S e n s e

S w itch D river

L E D Driv e rs

D o w n stream

PH Y # 2

Po rt # 2

OC S e n s e

S w itch D river

L E D Driv e rs

Do wn s tre a m

U SB D a ta

S ens e

Sw itc h /L E D

Driv e rs

Do wn s tre a m

U SB D a ta

S ens e

Sw itc h /L ED

Driv e rs

BUS Po w e r

D e tect

In te rn a l

D e fa u lts

S e lect

U p stream

PH Y

U p s tream

USB D a ta

R e p eater

C ontro lle r

SIE

S trapping

O p tions

PL L

24 M H z

C rysta l

3.3V

1.8V

Re g .

1.8V

Ca p

E EPR O M

o r SM Bu s

Ma s te r

SC L

S D

D o w n stream

PH Y # 4

Po rt # 4

OC S e n s e

S w itch D river

L E D Driv e rs

Do wn s tre a m

U SB D a ta

S ens e

Sw itc h /L ED

Driv e rs

D o w n stream

PH Y # 3

Po rt # 3

OC S e n s e

S w itch D river

L E D Driv e rs

D o w n s tream

US B Da ta

S ens e

Sw itc h /L ED

Driv e rs

Po rt

C ontro lle r

Po rt

C ontro lle r

R outin g Logic

R outing Logic

Po rt

A ssig n

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