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USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 1.0 (3-11-09) 14 SMSC USB251x
DATASHEET
Figure 5.3 4-Port 36-pin QFN
Note: *Battery charging enable (BC_EN) is only available in the USB251xB/Bi.
Ground Pad
(must be connected to VSS)
SMSC
USB2514/14i
USB2514B/14Bi
(Top View QFN-36)
Indicates pins on the bottom of the device.
26
VDD33
25
RESET_N
24
HS_IND / CFG_SEL[1]
23
SCL / SMBCLK / CFG_SEL[0]
22
SDA / SMBDATA / NON_REM[1]
21
OCS_N[4]
20
PRTPWR[4] / BC_EN[4]*
19
VBUS_DET
27
OCS_N[3]
18
PRTPWR[3] / BC_EN[3]*
17
OCS_N[2]
16
PRTPWR[2] / BC_EN[2]*
15
OCS_N[1]
14
VDD33
13
CRFILT
12
PRTPWR[1] / BC_EN[1]*
11
TEST
10
VDD33
SUSP_IND / LOCAL_PWR / NON_REM[0]
28
VDD33
29
USBDP_UP
31
XTALOUT
32
XTALIN / CLKIN
33
RBIAS
36
VDD33
35
PLLFILT
34
USBDM_UP
30
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