SMSC USB2512 Chapter 2 Block Diagram, PLL, PHY, SIE, Port, Pulse, PHY#1, PHY#2, Serial, Port #1, Port #2, Upstream, 1.8V Reg, Repeater, Bus-Power, Interface, Controller

USB 2.0 High-Speed 2-Port Hub Controller

Datasheet

Chapter 2 Block Diagram

To U pstream	U pstream U SB			24 M H z C rystal			To EEPR O M or
V B U S		D ata					SM Bus M aster
			3.3V			1.8V				SD SC K
					PLL				Serial
Bus-Pow er	Upstream							Interface
Detect/VB U S					1.8V Reg
	PHY
Pulse
					SIE
								Controller
	Repeater

TT	Port
	Controller

Routing & Port Re-O rdering Logic

		Port #1				Port #2
			O C				O C
	PHY#1	Sense			PHY#2	Sense
		Sw itch				Sw itch
			Driver			Driver
			LED				LED
		Drivers				Drivers
U SB D ata				U SB D ata
		O C Sense				O C Sense
D ow nstream Switch/LED				Downstream		Switch/LED
			Drivers				Drivers

Figure 2.1 USB2512 Block Diagram

SMSC USB2512	7	Revision 1.92 (11-28-07)
	DATASHEET