Freescale Semiconductor TWR-MCF52259-Ethenet - Manual (Page 124)

TM
U
S
B
T
o
p
o
lo
g
y
Introduction to USB USB On-the-Go:
What is it?
By 2001, there was a proliferation of peripheral devices
that could be interconnected and pass data to each other.
Because of this interaction of peripheral devices, the USB
Group saw the need for a USB device to sometimes act
as a device and sometimes act as the host. From that
need came the USB On-the-Go specification.
U
S
B
1
.0
S
p
ec
if
ic
at
io
n
1
9
9
5
1
9
9
6
1
9
9
8
2
0
0
0
2
0
0
1
U
S
B
g
ro
u
p
f
o
rm
ed
U
S
B
1
.1
S
p
ec
if
ic
at
io
n
U
S
B
2
.0
S
p
ec
if
ic
at
io
n
U
S
B
O
n
-t
h
e-
G
o
A
p
p
en
d
ix
A
U
S
B
O
n
-t
h
e-
G
o