
Page 29
Figure 9-2: USB module connection schematic
USBDP
USBDM
VCC-USB
C28
10nF
FP2
FERRITE
USBDET
R60
100
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
TXD
DTR#
RTS#
VCCIO
RXD
RI#
GND
NC
DSR#
DCD#
CTS#
CBUS4
CBUS2
CBUS3
CBUS0
CBUS1
OSCO
OSCI
TEST
AGND
NC
GND
GND
VCC
RESET#
3V3OUT
USBDM
USBDP
FT232RL
U4
FT232RL
VCC-3.3
VCC-3.3
C36
100nF
R53
220
R51
4K7
R52
10K
C34
100nF
TXF-MCU
RXF-MCU
1
2
3
4
5
GND
ID
D+
D-
VBUS
CN3
USB MINIB
LD3
TX/RX
VCC-3.3
30
29
28
27
34
33
58
57
56
55
54
53
52
46
36
35
42
43
44
45
37
50
9
48
49
11
12
32
72
69
68
67
66
65
64
63
4
3
78
77
24
23
18
17
16
15
14
13
5
6
7
8
10
79
80
1
2
22
21
20
19
62
61
60
59
38
39
40
41
47
71
31
51
70
26
25
76
75
74
73
ATxmega128A1
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
PE0
VCC
GND
PD7
PE7
PE6
PB0
PB1
PB2
PB3
PJ4
PJ3
PJ2
PH2
VCC
GND
GND
VCC
PH0
PH1
PF0
PF1
XTAL
2/PR0
RESET/PDI
PDI
GN
D
PQ
3
PQ
2
GN
D
VCC
AVCC
GND
PA3
PA2
PA1
PA0
AVCC
XTAL
1/PR1
PB7
PD3
GND
PC7
PC6
PC5
PC4
PC3
PJ6
PJ5
PF7
PF6
VCC
PB6
PB5
PE3
PA4
PA5
PA6
PA7
PD2
PD1
PD0
VCC
PF4
PF5
PJ1
PH6
PF2
PF3
PH3
PE4
PE2
PH4
PH7
TOSC2/PQ
1
PC2
PC1
PC0
PE1
PE5
PH5
PJ0
TOSC1/PQ
0
PD6
PD5
PD4
GND
PB4
GND
VCC
PJ7
PK3
PK1
GND
VCC
PK0
PK2
PK4
PK5
PK6
PK7
U1
AVCC
TXF-MCU
RXF-MCU
USBDET
C5
100nF
C6
100nF
C7
100nF
C8
100nF
E8
10uF
VCC-3.3 VCC-3.3 VCC-3.3 VCC-3.3
VCC-3.3
C31
100nF
VCC-3.3
C35
100nF
VCC-3.3