Datasheet

USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 2.2 (02-17-12) 18 SMSC USB251xB/xBi
DATASHEET
SMBCLK System
Management Bus
Clock
24
SMBDATA Server Message
Block Data Signal
22
SUSP_IND Active/Suspend
Status Indicator
28
TEST Test Pin 11
USBDM_UP USB Bus Data 30
USBDP_UP 31
USBDM_DN1 Hi-Speed USB Data 1
USBDM_DN2 3
USBDM_DN3 -6
USBDM_DN4 -8
USBDP_DN1 2
USBDP_DN2 4
USBDP_DN3 -7
USBDP_DN4 -9
VBUS_DET Upstream VBUS
Power Detection
27
VDD33 3.3 V Digital Power 15
VDD33 23
VDD33 36
VDDA33 3.3 V Analog Power 5
VDDA33 10
VDDA33 29
VDDA33 -
XTALIN Crystal Input 33
XTALOUT Crystal Output 32
Table 3.2 USB251xB/xBi Pin List (Alphabetical) (continued)
SYMBOL NAME
PIN NUMBERS
36 QFN
USB2512B USB2512Bi USB2513B USB2513Bi USB2514B USB2514Bi