Document No.: FT_000061
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 2.09
Clearance No.: FTDI#77
6.2 USB Self Powered Configuration
Self Powered application example 1: Self powered configuration
+3.3V
+1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
+3.3V
100nF 100nF 100nF
4.7uF
GND
4.7uF
GND
100nF 100nF
GND
GND
GND
GND
GND
100nF 100nF 100nF 100nF
GND
GND
GND
GND
+1.8V
+3.3V
Ext. Power Supply
LDO +3.3V
1
2
GND
100nF
GND
GND
VBUS
D-
D+
GND
1
2
3
4
VBUS
7
8
6
+3.3V
0?
GND
12K
+3.3V
GND
1K
14
DM
DP
REF
RESET#
GND
GND
100nF
3.3uF
Vin
Vout
GND
+3.3V
50 VREGIN
+1.8V
49 VREGOUT
56 VCCIO
42 VCCIO
31 VCCIO
20 VCCIO
64 VCORE
37 VCORE
12 VCORE
9 VPLL
VPHY
4
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
ACBUS0
ACBUS1
ACBUS2
ACBUS3
ACBUS4
ACBUS5
ACBUS6
ACBUS7
BDBUS0
BDBUS1
BDBUS2
BDBUS3
BDBUS4
BDBUS5
BDBUS6
BDBUS7
16
17
18
19
21
22
23
24
26
27
28
29
30
32
33
34
38
39
40
41
43
44
45
46
48
52
53
54
55
57
58
59
60
36
10K
10K
10K
EECLK
EEDATA
63
62
61
2
EECS
EECLK
EEDATA
OSCI
+3.3V
1
6
3
2
5
8
4
7
2.2K
1
3
12MHz
3
13
OSCO
TEST
CS
VCC
ORG
D
Q
93C46
SCL
DU
GND
BCBUS0
BCBUS1
BCBUS2
BCBUS3
BCBUS4
BCBUS5
BCBUS6
BCBUS7
VBUS
4.7K
GND
GND
GND
GND
GND
GND
GND
GND
51
47
35
25
15
11
5
1
AGND
10
PWREN#
SUSPEND#
10K
27pF
GND
GND
27pF
GND
GND
GND
Figure 6.3 Self Powered Configuration Example 1
gets its power from its own power supply and does not draw current from the USB bus. In this example
an external power supply is used. This external supply is regulated to +3.3V.
Note that in this set-up, the EEPROM should be configured for self-powered operation and the option
“suspend on DBUS7 low” selected in MPROG. Also this configuration uses the pin BCBUS7, so this
assumes that MPSSE mode is not selected.
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50
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