- Standard Microsystems Compatible 3-Port Hub Specification Sheet

Integrated USB 2.0 Compatible 3-Port Hub
Datasheet
Revision 2.3 (08-27-07) 8 SMSC USB2503/USB2503A
DATASHEET
Chapter 3 Pin Configuration 3-Port Hub
Figure 3.1 3-Port 48-Pin QFN
Thermal Slug
(must be connected to VSS)
SMSC
USB2503
&
USB2503A
(Top View QFN-48)
Indicates pins on the bottom of the device.
VDDA33 1
USBDP0 2
USBDN0 3
VSS 4
USBDN1 5
USBDP1 6
VDDA33 7
USBDP2 8
USBDN2 9
VSS 10
USBDN3 11
USBDP3 12
24 TEST0
23 VDD18
22 VSS
21 GR1/NON_REM0
20 GANG_EN
19 GR2/NON_REM1
18 PRTPWR_POL
17 GR3/PRT_DIS0
16 PRTPWR2
15 OCS3_N
14 PRTPWER3
13 VDDA33
RESET_N 37
VSS 38
VDD33CR 39
VDD18 40
VSS 41
XTAL1/CLKIN 43
VDDA18PLL 44
VDDA33PLL 45
VSS 48
RBIAS 47
ATEST/REG_EN 46
XTAL2 42
35 CLKIN_EN 34 OCS1_N 33 PRTPWR1 32 OCS2_N 31 VDD18 30 VSS 29 VBUS_DET 28 SELF_PWR 26 SCL/SMBCLK/CFG_SEL0 25 SDA/SMBDATA 27 CFG_SEL1 36 TEST1