USB3500 Datasheet, PDF (6/45 Pages) SMSC Corporation – Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface

USB3500
2.0 PIN CONFIGURATION AND PIN DEFINITIONS
The USB3500 is offered in a 56-pin QFN package. The pin definitions and locations are documented below.
2.1 USB3500 Pin Locations
FIGURE 2-1:
USB3500 PINOUT - TOP VIEW
VSS 1
XCVRSEL0 2
TERMSEL 3
TXREADY 4
VBUS 5
ID 6
SUSPENDN 7
TXVALID 8
RESET 9
VDD3.3 10
DP 11
DM 12
VSS 13
VDD3.3 14
USB3500
Hi-Speed USB
UTMI+ PHY
56 Pin QFN
GND FLAG
42 SESSVLD
41 RXVALID
40 VSS
39 DATA[0]
38 DATA[1]
37 DATA[2]
36 DATA[3]
35 DATA[4]
34 DATA[5]
33 DATA[6]
32 DATA[7]
31 SESSEND
30 DISCHRGVBUS
29 HOSTDISC
The flag of the QFN package must be connected to ground with a via array.
2.2 Pin Definitions
TABLE 2-1: USB3500 PIN DEFINITIONS
Pin
Name
Direction,
Type
Active
Level
1
VSS
2
XCVRSEL[0]
Ground
N/A
Input
N/A
3
TERMSEL
Input
N/A
Description
PHY ground.
Transceiver Select. These signals select between the
FS and HS transceivers:
Transceiver select.
00: HS
01: FS
10: LS
11: LS data, FS rise/fall times
Termination Select. This signal selects between the
FS and HS terminations:
0: HS termination enabled
1: FS termination enabled
DS00002103A-page 6
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