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2.7 USB2.0 Ports
All USB interfaces
shall
be USB 2.0 compliant. The minimum of 4 USB channels provides support for
keyboard, mouse, CD/DVD drive, and one additional device. Up to four USB 2.0 ports
may
support the
extended signaling for SuperSpeed USB 3.0. USB0
may
optionally be configured as a USB client.
2.7.1 USB2.0 Signal Definitions
Table 21
:
USB Signal Descriptions
Signal
Pin# Description
I/O
Note
USB0+
USB0-
A46
A45
USB0
may
be configured as a USB client or as a host, or
both at the Module designer's discretion.
All other USB ports, if implemented,
shall
be host ports.
USB Port 0, data + or D+
USB Port 0, data + or D-
Carrier board:
Device - Connect to D+/-
Conn. - Connect 90Ω @100MHz Common Choke in series
and ESD suppressors to GND to Pin 3 D+ / Pin 2 D-
N/C if not used
I/O USB
USB1+
USB1-
B46
B45
USB Port 1, data + or D+
USB Port 1, data + or D-
Carrier board:
Device - Connect to D+/-
Conn. - Connect 90Ω @100MHz Common Choke in series
and ESD suppressors to GND to Pin 3 D+ / Pin 2 D-
N/C if not used
I/O USB
USB2+
USB2-
A43
A42
USB Port 2, data + or D+
USB Port 2, data + or D-
Carrier board:
Device - Connect to D+/-
Conn. - Connect 90Ω @100MHz Common Choke in series
and ESD suppressors to GND to Pin 3 D+ / Pin 2 D-
N/C if not used
I/O USB