Future Technology Devices International Ltd FT4232H Quad High ...
Future Technology Devices International Ltd FT4232H Quad High ...
Future Technology Devices International Ltd FT4232H Quad High ...
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9<br />
4<br />
VPLL<br />
VPHY<br />
42 VCCIO<br />
31 VCCIO<br />
20 VCCIO<br />
VCCIO<br />
56<br />
Document No.: FT_000060<br />
<strong>FT4232H</strong> QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC<br />
Datasheet Version 2.09<br />
Clearance No.: FTDI#78<br />
6.2 USB Self Powered Configuration<br />
Self Powered application example 1: Self powered configuration<br />
+3.3V<br />
+3.3V<br />
+1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V<br />
100nF 100nF 100nF 100nF 100nF 100nF 100nF<br />
4.7uF<br />
4.7uF<br />
100nF<br />
100nF<br />
GND GND GND GND GND GND GND<br />
GND<br />
GND<br />
GND<br />
GND<br />
+1.8V<br />
+3.3V<br />
Ext. Power Supply<br />
1<br />
2<br />
1<br />
6<br />
3<br />
2<br />
5<br />
GND<br />
+3.3V<br />
CS VCC 8<br />
ORG<br />
4<br />
D Q<br />
93C46<br />
SCL<br />
DU 7<br />
GND<br />
LDO +3.3V<br />
Vin Vout<br />
GND<br />
10K 10K 10K<br />
+3.3V<br />
GND<br />
2.2K<br />
+3.3V<br />
12K<br />
GND<br />
GND<br />
+1.8V<br />
3.3uF<br />
100nF 100nF<br />
GND<br />
GND GND GND<br />
VBUS<br />
1<br />
2<br />
7<br />
D-<br />
3<br />
8<br />
D+<br />
GND 4<br />
0<br />
GND<br />
4.7K<br />
10K<br />
GND<br />
27pF<br />
1K<br />
EECLK<br />
EEDATA<br />
1 3<br />
12MHz<br />
GND<br />
27pF<br />
50<br />
49<br />
6<br />
14<br />
63<br />
62<br />
61<br />
2<br />
3<br />
13<br />
VREGIN<br />
VREGOUT<br />
DM<br />
DP<br />
REF<br />
RESET#<br />
EECS<br />
EECLK<br />
EEDATA<br />
OSCI<br />
OSCO<br />
TEST<br />
AGND 10<br />
64 VCORE<br />
37 VCORE<br />
12 VCORE<br />
GND 51<br />
GND 47<br />
GND 35<br />
GND 25<br />
GND 15<br />
GND 11<br />
GND GND 5<br />
1<br />
GND<br />
ADBUS0<br />
ADBUS1<br />
ADBUS2<br />
ADBUS3<br />
ADBUS4<br />
ADBUS5<br />
ADBUS6<br />
ADBUS7<br />
BDBUS0<br />
BDBUS1<br />
BDBUS2<br />
BDBUS3<br />
BDBUS4<br />
BDBUS5<br />
BDBUS6<br />
BDBUS7<br />
CDBUS0<br />
CDBUS1<br />
CDBUS2<br />
CDBUS3<br />
CDBUS4<br />
CDBUS5<br />
CDBUS6<br />
CDBUS7<br />
DDBUS0<br />
DDBUS1<br />
DDBUS2<br />
DDBUS3<br />
DDBUS4<br />
DDBUS5<br />
DDBUS6<br />
DDBUS7<br />
PWREN#<br />
SUSPEND#<br />
16<br />
17<br />
18<br />
19<br />
21<br />
22<br />
23<br />
24<br />
26<br />
27<br />
28<br />
29<br />
30<br />
32<br />
33<br />
34<br />
38<br />
39<br />
40<br />
41<br />
43<br />
44<br />
45<br />
46<br />
48<br />
52<br />
53<br />
54<br />
55<br />
57<br />
58<br />
59<br />
60<br />
36<br />
Figure 6.3 Self Powered Configuration Example 1<br />
Figure 6.3 illustrates the <strong>FT4232H</strong> in a typical USB self powered configuration. A USB self powered device<br />
gets its power from its own power supply and does not draw current from the USB bus. In this example<br />
an external power supply is used. This external supply is regulated to +3.3V.<br />
Note that in this set-up, the EEPROM should be configured for self-powered operation.<br />
Copyright © 2010 <strong>Future</strong> <strong>Technology</strong> <strong>Devices</strong> <strong>International</strong> Limited 31
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