USB 2.0 Hi-Speed Hub Controller
Datasheet
Revision 1.0 (3-11-09)
18
SMSC USB251x
DATASHEET
Table 5.1 Pin List in Alphabetical Order
SYMBOL
NAME
PIN NUMBERS
36 QFN
48QFN
64 QFN
USB2
512
USB2
512
i
USB2
512
A
USB2
512
Ai
USB2
512
B
USB2
512
Bi
USB2
513
USB2
513
i
USB2
513
B
USB2
513
Bi
USB2
514
USB2
514
i
USB2
514
B
USB2
514
Bi
USB2
513
USB2
514
USB2
517
USB2
517
i
BC_EN[1]
Battery
Charging Strap
Option
-
12
-
12
-
12
-
BC_EN[2]
-
16
-
16
-
16
-
BC_EN[3]
-
18
-
18
-
BC_EN[4]
-
20
-
BOOST[0]
PHY Boost
Strapping
Option
-
36
50
BOOST[1]
-
24
48
CFG_SEL[0] Configuration
Programming
Selection
24
31
41
CFG_SEL[1]
25
32
42
CFG_SEL[2]
-
33
13
CLKIN
External Clock
Input
33
45
61
CRFILT
Core Regulator
Filter Capacitor
14
17
25
GANG_EN
Ganged Port
Power Strap
Option
-
22
34
Ground Pad
Exposed Pad
Tied to Ground
(VSS)
ePad
HS_IND
Hi-Speed
Upstream Port
Indicator
25
32
42
LED_A_N[1]
Port LED
Indicator
-
37
51
LED_A_N[2]
-
25
49
LED_A_N[3]
-
23
47
LED_A_N[4]
-
13
33
LED_A_N[5]
-
31
LED_A_N[6]
-
17
LED_A_N[7]
-
15
LED_B_N[1]
Enhanced
Indicator
Port LED
-
36
50
LED_B_N[2]
-
24
48
LED_B_N[3]
-
22
34
LED_B_N[4]
-
12
32
LED_B_N[5]
-
18
LED_B_N[6]
-
16
LED_B_N[7]
-
14
LOCAL_PWR
Local Power
Detection
28
39
45