USB2503-HZH Standard Microsystems Corp., USB2503-HZH Datasheet - Page 9

• Manufacturer Part Number: USB2503-HZH
• Description: Interface, Integrated USB2.0 Compatible 3-Port Hub
• Manufacturer: Standard Microsystems Corp.

Integrated USB2.0 Compatible 3-Port Hub
Datasheet
Chapter 4 3-Port Hub Block Diagram
SMSC USB2503
Detect Upstream
USB Bus Data
VBUS Power
NAME
Downstream
Downstream
USB Data
Upstream
Upstream
USB Data
Repeater
VBUS_DET
PHY #1
SYMBOL
PHY
USBDN0
USBDP0
Upstream
Table 4.1 3-Port Hub Pin Descriptions
Sense
Detect
Power
V
V
OC
Switch Driver
LED Drivers
Figure 4.1 3-Port Block Diagram
BUS
BUS
OC Sense
Routing Logic
UPSTREAM USB 2.0 INTERFACE
Port #1
Switch/LED
TYPE
I/O12
IO-U
Drivers
24 MHz
Crystal
PLL
...
These pins connect to the USB bus data signals.
Detects state of Upstream VBUS power (indicates the
power-managed state of the upstream device).
TT
#1
4
3.3V
Reg.
1.8V
SIE
Downstream
Downstream
USB Data
TT
#2
PHY #3
1.8V
Cap
TT
#3
Strapping
Options
Defaults
Internal
Select
Pin
Sense
Switch Driver
OC
LED Drivers
Controller
FUNCTION
Controller
OC Sense
Port #3
Port
Switch/LED
or SMBus
EEPROM
Interface
Drivers
Master
Serial
SD
To
SCL
Revision 1.3 (08-24-04)