USB2503A(2006) 데이터 시트보기 (PDF) - SMSC -> Microchip
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USB2503A Datasheet PDF : 43 Pages
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Integrated USB 2.0 Compatible 3-Port Hub
Datasheet
Chapter 4 3-Port Hub Block Diagram
Upstream Upstream 24 MHz
USB Data VBUS Crystal
3.3V
To
Pin EEPROM
1.8V Strapping or SMBus
Cap Options Master
SD SCL
VBUS
Upstream Power
PLL
1.8V
Reg.
PHY
Detect
Repeater
SIE
Internal
Defaults
Select
Serial
Interface
Controller
TT TT TT
#1 #2 #3
Port
Controller
Routing Logic
... Port #1
Downstream OC Sense
Port #3
Downstream OC Sense
PHY #1 Switch Driver
PHY #3 Switch Driver
LED Drivers
LED Drivers
Downstream OC Switch/LED
USB Data Sense Drivers
Downstream OC Switch/LED
USB Data Sense Drivers
Figure 4.1 3-Port Block Diagram
NAME
USB Bus Data
Detect Upstream
VBUS Power
Table 4.1 3-Port Hub Pin Descriptions
SYMBOL
TYPE
FUNCTION
UPSTREAM USB 2.0 INTERFACE
USBDN0
USBDP0
VBUS_DET
IO-U
These pins connect to the USB bus data signals.
I/O12
Detects state of Upstream VBUS power (indicates the
power-managed state of the upstream device).
SMSC USB2503/USB2503A
9
DATASHEET
Revision 2.1 (12-06-06)
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