TransDimension Inc.
Interfacing OTG243 to Motorola MCF5272 ColdFire Processor
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
NC
D
0
D
1
D
2
V
DD
V
DD
D
3
D
4
D
5
D
6
D
7
V
SS
D
8
D
9
D
10
D
11
D
12
D
13
D
14
D
15
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
V
DD
V
DD
V
SS
TEST
NC
/CS
/WR
/RD
D
16
D
17
D
18
D
19
D
20
D
21
D
22
D
23
V
DD
V
SS
D
24
D
25
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
D
26
D
27
V
SS
V
DD
DP
2
DM
2
DP
3
DM
3
NC
NC
NC
RPU
DP
1
DM
1
V
SS
D
28
D
29
D
30
D
31
V
SS
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
V
DD
V
DD
WAKEUP
INT
/RESET
VBP
A
2
A
3
A
4
A
5
A
6
A
7
A
8
NC
NC
AV
DD
AV
SS
CEX
1
V
DD
CEX
2
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
VBUS
VFB
/OC
/PO
ID
V
SS
V
DD
V
DD
/EXVBO
DRQ
1
DRQ
0
DACK
1
DACK
0
EOT
1
EOT
0
V
SS
AV
SS
OSC
1
OSC
2
AV
DD
Figure 2: OTG243 pin assignment (LQFP)
1.2
References
General instructions on OTG243 interfacing are given in chapters 6 and 7 of the OTG243 data
sheet (TDI document number: MU2001). This reference design describes a specific interfacing
design of OTG243 with Motorola MCF5272 ColdFire
.
It is assumed that the user has knowledge on general principles of microprocessor interfacing, as
well as some understanding on the Motorola MCF5272 and the OTG243. Reading Chapter 7 of
USB Specification 2.0 is recommended.
1.3
Notation
For clarity, all OTG243 signal names in the following are in
italic
bold:
e.g.,
A
4
and
VBUS,
and active low signals are written with leading “/”: e.g.,
/WR.
MCF5272 names are in plain
bold:
e.g.,
A4
and
nCS0,
and active low signals are written with
leading “n”: e.g,
CS0
is written as
nCS0.
1.4
Software
TransDimension, together with SoftConnex Inc, its wholly owned subsidiary, offer total solutions
including controller chips, reference designs, development kits, firmware for microprocessor
interfacing, HCD (host controller driver), HNP (Host Negotiation Protocol), SRP (Session
Request Protocol) as well as
USB Host
and
Function
stacks running under most real time
operating systems.
2
OXFORD [ OXFORD SEMICONDUCTOR ]
