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USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 1.0 (3-11-09) 16 SMSC USB251x
DATASHEET
Figure 5.5 4-Port 48-Pin QFN
Ground Pad
(must be connected to VSS)
SMSC
USB2514
(Top View QFN-48)
PRTPWR_POL
38
SUSP_IND / LOCAL_PWR / NON_REM[0]
39
LED_A_N[1] / PRTSWP[1]
37
SEL48
40
VDD33
41
USBDP_UP
43
XTALOUT
44
XTALIN / CLKIN
45
RBIAS
48
VDD33
47
PLLFILT
46
USBDM_UP
42
VDD33
1
USBDM_DN[1] / PRT_DIS_M[1]
2
USBDP_DN[1] / PRT_DIS_P[1]
3
USBDM_DN[2] / PRT_DIS_M[2]
4
USBDP_DN[2] / PRT_DIS_P[2]
5
USBDM_DN[3] / PRT_DIS_M[3]
6
USBDP_DN[3] / PRT_DIS_P[3]
7
USBDM_DN[4] / PRT_DIS_M[4]
8
USBDP_DN[4] / PRT_DIS_P[4]
9
LED_B_N[4]
10
NC
11
VDD33
12
21
PRTPWR[3]
20
OCS_N[2]
19
PRTPWR[2]
18
VDD33
17
PRTPWR[1]
16
CRFILT
15
OCS_N[1]
14
TEST
13
LED_A_N[4] / PRTSWP[4]
23
LED_A_N[3] / PRTSWP[3]
22
LED_B_N[3] / GANG_EN
24
LED_B_N[2] / BOOST[1]
35
LED_B_N[1] / BOOST[0]
34
VBUS_DET
33
RESET_N
32
HS_IND / CFG_SEL[1]
31
SCL / SMBCLK / CFG_SEL[0]
30
VDD33
29
SDA / SMBDATA / NON_REM[1]
28
OCS_N[4]
36
CFG_SEL[2]
27
PRTPWR[4]
26
OCS_N[3]
25
LED_A_N[2] / PRTSWP[2]
Indicates pins on the bottom of the device.