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USB 2.0 High-Speed 4-Port Hub Controller
Datasheet
Revision 1.98 (11-19-07) 8 SMSC USB2514
DATASHEET
Chapter 2 Block Diagram
Figure 2.1 USB2514 Block Diagram
To Upstream
V
BUS
3.3V
Upstream
PHY
Upstream USB
Data
Repeater
Controller
SIE
Serial
Interface
PLL
24 MHz Crystal
To EEPROM or
SMBus Master
Routing & Port Re-Ordering Logic
SCKSD
TT #4
Port
Controller
PHY#1
Port #1
OC
Sense
Switch
Driver
LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers
Bus-Power
Detect/V
BUS
Pulse
1.8V
TT #3TT #2TT #1
1.8V Reg
PHY#2
Port #2
OC
Sense
Switch
Driver
LED
Drivers
PHY#3
Port #3
OC
Sense
Switch
Driver
LED
Drivers
PHY#4
Port #4
OC
Sense
Switch
Driver
LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers