SMSC USB2503A - Manual (Page 8)

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.
VD
D
A
33
1
U
SBD
P0
2
USB
D
N
0
3
VS
S
4
USB
D
N
1
5
U
SBD
P1
6
VD
D
A
33
7
U
SBD
P2
8
USB
D
N
2
9
VS
S
1
0
USB
D
N
3
11
U
SBD
P3
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
CL
K
IN_
EN
34
O
C
S1
_N
33
PRT
P
W
R
1
32
O
C
S2
_N
31
VDD
1
8
30
VSS
29
VBU
S_DET
28
SELF
_
PWR
26
SCL/SMBCLK/
C
FG_SEL0
25
SDA
/SM
BDA
T
A
27
CFG_SEL1
36
T
E
ST1