USB3500 SMSC Corporation, USB3500 Datasheet - Page 13

• Manufacturer Part Number: USB3500
• Description: Hi-Speed USB Host
• Manufacturer: SMSC Corporation

Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface
Datasheet
SMSC USB3500
PIN
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
DISCHRGVBUS
HOSTDISC
SESSEND
SESSVLD
RXVALID
DATA[7]
DATA[6]
DATA[5]
DATA[4]
DATA[3]
DATA[2]
DATA[1]
DATA[0]
VDD3.3
NAME
VSS
Table 3.1 USB3500 Pin Definitions (continued)
DIRECTION,
Pull-low
Pull-low
Pull-low
Pull-low
Pull-low
Pull-low
Pull-low
Pull-low
CMOS,
CMOS,
CMOS,
CMOS,
CMOS,
CMOS,
CMOS,
CMOS,
Ground
Output
Output
Output
Output
TYPE
Input
N/A
I/O,
I/O,
I/O,
I/O,
I/O,
I/O,
I/O,
I/O,
DATASHEET
ACTIVE
LEVEL
High
High
High
High
High
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
13
DESCRIPTION
3.3V PHY Supply. Provides power for USB2.0
Transceiver, UTMI+ Digital, Digital I/O, and
Regulators.
Host Disconnect. In HS Host mode this indicates to
that a downstream device has been disconnected.
Automatically reset to 0b when Low Power Mode is
entered.
Discharge VBUS through a resistor to ground.
0: do not discharge VBUS
1: discharge VBUS
Session End. Indicates that the voltage on Vbus is
below its B-Device Session End threshold.
0: VBUS > V
1: VBUS < V
8-bit bi-directional data bus. Data[7] is the MSB and
Data[0] is the LSB.
PHY ground.
Receive Data Valid. Indicates that the DATA bus has
received valid data. The Receive Data Holding
Register is full and ready to be unloaded. The Link
is expected to register the DATA bus on the next
rising edge of CLKOUT.
Session Valid. Indicates that the voltage on Vbus is
above the indicated threshold.
0: VBUS < V
1: VBUS > V
SessEnd
SessEnd
SessVld
SessVld
Revision 1.0 (04-04-05)