Datasheet

USB 2.0 Hi-Speed 7-Port Hub Controller
Datasheet
Revision 2.8 (09-17-12) 10 SMSC USB2517
DATASHEET
Chapter 4 Block Diagram
Figure 4.1 USB2517 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
#7
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
#6
TT
#5
TT
#1
1.8V Reg
PHY#2
Port #2
OC
Sense
Switch
Driver
LED
Drivers
PHY#7
Port #7
OC
Sense
Switch
Driver
LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers
USB Data
Downstream
OC Sense
Switch/LED
Drivers
TT
#4
TT
#3
TT
#2