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SMSC USB2524 17 Revision 1.91 (08-22-07)
DATASHEET
Chapter 5 Switching Hub Block Diagram
Figure 5.1 USB2524 Switching Hub Block Diagram
Upstream
V
BUS
Upstream
PHY
Upstream
USB Data
Repeater
ControllerSIE
Serial
Interface
Switching Logic
Downstream
PHY #1
Port #1
OC Sense
Switch Driver
LED Drivers
Downstream
PHY #2
Port #2
OC Sense
Switch Driver
LED Drivers
Downstream
USB Data
OC
Sense
Switch/LED
Drivers
Downstream
USB Data
OC
Sense
Switch/LED
Drivers
V
BUS
Power
Detect
Internal
Defaults
Select
Upstream
PHY
Upstream
USB Data
Repeater
Controller SIE
Pin
Strapping
Options
PLL
24 MHz
Crystal
3.3V
1.8V
Reg.
1.8V
Cap
To
EEPROM
or SMBus
Master
SCL SD
Downstream
PHY #4
Port #4
OC Sense
Switch Driver
LED Drivers
Downstream
USB Data
OC
Sense
Switch/LED
Drivers
Downstream
PHY #3
Port #3
OC Sense
Switch Driver
LED Drivers
Downstream
USB Data
OC
Sense
Switch/LED
Drivers
TT
#1
TT
#2
TT
#3
TT
#4
Port
Controller
TT
#1
TT
#2
TT
#3
TT
#4
Port
Controller
Routing Logic Routing Logic
Port
Assign
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