USB 2.0 Hi-Speed Hub Controller

Datasheet

 

LED B N[1] / BOOST[0]

VBUS DET

RESET N

CFG SEL[2]

HS IND / CFG SEL[1]

SCL / SMBCLK / CFG SEL[0]

VDD33

SDA / SMBDATA / NON REM[1]

OCS N[4]

PRTPWR[4]

OCS N[3]

LED A N[2] / PRTSWP[2]

 

 

36

35

34

33

32

31

30

29

28

27

26

25

 

LED_A_N[1] / PRTSWP[1]

37

 

 

 

 

 

 

 

 

 

 

24

LED_B_N[2] / BOOST[1]

PRTPWR_POL

38

 

 

 

 

 

 

 

 

 

 

23

LED_A_N[3] / PRTSWP[3]

SUSP_IND / LOCAL_PWR / NON_REM[0]

39

 

 

 

 

 

 

 

 

 

 

22

LED_B_N[3] / GANG_EN

SEL48

40

 

 

 

 

 

 

 

 

 

 

21

PRTPWR[3]

VDD33

41

 

 

 

 

SMSC

 

 

 

 

20

OCS_N[2]

USBDM_UP

42

 

 

 

 

 

 

 

 

19

PRTPWR[2]

 

 

 

USB2514

 

 

 

USBDP_UP

43

 

 

 

 

 

 

18

VDD33

 

 

(Top View QFN-48)

 

XTALOUT

44

 

 

 

17

CRFILT

 

 

 

 

 

 

 

 

 

 

XTALIN / CLKIN

45

 

 

 

 

 

 

 

 

 

 

16

OCS_N[1]

PLLFILT

46

 

 

 

Ground Pad

 

 

 

15

PRTPWR[1]

RBIAS

47

 

 

 

 

 

 

14

TEST

 

(must be connected to VSS)

 

 

 

 

 

 

 

VDD33

48

 

 

 

 

 

 

 

 

 

 

13

LED_A_N[4] / PRTSWP[4]

 

1

2

3

4

5

6

7

8

9

10

11

12

 

 

PRT DIS M[1]

PRT DIS P[1]

PRT DIS M[2]

PRT DIS P[2]

VDD33

PRT DIS M[3]

PRT DIS P[3]

PRT DIS M[4]

PRT DIS P[4]

VDD33

NC

LED B N[4]

 

 

USBDM DN[1] /

USBDP DN[1] /

USBDM DN[2] /

USBDP DN[2] /

 

USBDM DN[3] /

USBDP DN[3] /

USBDM DN[4] /

USBDP DN[4] /

 

 

 

 

Indicates pins on the bottom of the device.

Figure 5.5 4-Port 48-Pin QFN

Revision 1.0 (3-11-09)

16

SMSC USB251x

DATASHEET