USB3500 Datasheet, PDF (12/46 Pages) SMSC Corporation – Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface

Hi-Speed USB Host, Device or OTG PHY With UTMI+ Interface
Table 3.1 USB3500 Pin Definitions (continued)
Datasheet
DIRECTION, ACTIVE
PIN
NAME
TYPE
LEVEL DESCRIPTION
12
DM
I/O,
Analog
N/A D- pin of the USB cable.
13
VSS
Ground
N/A PHY ground.
14
VDD3.3
N/A
N/A 3.3V PHY Supply.
15
XCVRSEL[1]
Input
N/A 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
16
CHRGVBUS
Input
High
Charge VBUS through a resistor to VDD3.3.
0: do not charge VBUS
1: charge VBUS
17
RXACTIVE
Output
High
Receive Active. Indicates that the receive state
machine has detected Start of Packet and is active.
18
OPMODE[1]
19
OPMODE[0]
Input
Input
N/A Operational Mode. These signals select between
the various operational modes:
N/A ^{[1] [0] Description}
0 0 0: Normal Operation
0 1 1: Non-driving (all terminations removed)
1 0 2: Disable bit stuffing and NRZI encoding
1 1 3: Reserved
20
ID_DIG
Output
High
ID Digital. Indicates the state of the ID pin.
0: connected plug is a mini-A
1: connected plug is a mini-B
21
IDPULLUP
Input
High
ID Pull-up. Enables sampling of the analog ID line.
Disabling the ID line sampler will reduce PHY power
consumption.
0: Disable sampling of ID line.
1: Enable sampling of ID line.
22
VSS
Ground
N/A PHY ground.
23
CLKOUT
Output,
CMOS
N/A 60MHz reference clock output. All UTMI+ signals are
driven synchronous to this clock.
24
VSS
Ground
N/A PHY ground.
25
LINESTATE[1]
26
LINESTATE[0]
Output
Output
N/A Line State. These signals reflect the current state of
the USB data bus in FS mode. Bit [0] reflects the
N/A ^{state of DP and bit [1] reflects the state of DM. When}
the device is suspended or resuming from a
suspended state, the signals are combinatorial.
Otherwise, the signals are synchronized to CLKOUT.
[1] [0] Description
0 0 0: SEO
0 1 1: J State
1 0 2: K State
1 1 3: SE1
27
VDD1.8
N/A
N/A 1.8V regulator output for digital circuitry on chip.
Place a 0.1uF capacitor near this pin and connect
the capacitor from this pin to ground. Connect pin 27
to pin 49.
Revision 1.0 (04-04-05)
12
DATASHEET
SMSC USB3500