Datasheet

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251x 21 Revision 1.1 (04-26-10)
DATASHEET
USBDM_DN[1] Hi-Speed USB
Data
1
USBDM_DN[2] 3
USBDM_DN[3] - 6
USBDM_DN[4] - 8 - 8
USBDM_DN[5] - 11
USBDM_DN[6] - 53
USBDM_DN[7] - 55
USBDP_DN[1] 2
USBDP_DN[2] 4
USBDP_DN[3] - 7
USBDP_DN[4] - 9 - 9
USBDP_DN[5] - 12
USBDP_DN[6] - 54
USBDP_DN[7] - 56
VBUS_DET Upstream
VBUS Power
Detection
27 35 44
VDD33 3.3 V Power 5
VDD33 10
VDD33 15 18 24
VDD33 23 30 46
VDD33 29 41 52
VDD33 36 48 57
VDD33 - 64
XTALIN Crystal Input 33 45 61
XTALOUT Crystal Output 32 44 60
Table 5.1 Pin List in Alphabetical Order (continued)
SYMBOL NAME
PIN NUMBERS
36 QFN 48QFN 64 QFN
USB2512 USB2512i USB2512A USB2512Ai USB2512B USB2512Bi USB2513 USB2513i USB2513B USB2513Bi USB2514 USB2514i USB2514B USB2514Bi USB2513 USB22513i USB2514 USB22514i USB2517 USB2517i