FT2232HQ-REEL FTDI, FT2232HQ-REEL Datasheet - Page 49

• Manufacturer Part Number: FT2232HQ-REEL
• Description: USB Interface IC USB HS to Dual UART/ FIFO/SPI/JTAG/I2C
• Manufacturer: FTDI

Specifications of FT2232HQ-REEL

• Mounting Style: SMD/SMT
• Package / Case: QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

6
The following sections illustrate possible USB power configurations for the FT2232H.
All USB power configurations illustrated apply to both package options for the FT2232H device
6.1 USB Bus Powered Configuration
Bus Powered Application example 1: Bus powered configuration
Figure 6.1 Bus Powered Configuration Example 1
Figure 6.1 illustrates the FT2232H in a typical USB bus powered design configuration. A USB bus powered
device gets its power from the USB bus. In this application, the FT2232H requires that the VBUS (USB
+5V) is regulated down to +3.3V (using an LDO) to supply the VCCIO, VPLL, VPHY and VREGIN.
VREGIN is the +3.3V input to the on chip +1.8V regulator. The output of the on chip LDO regulator
(+1.8V) drives the FT2232H core supply (VCORE). This requires a minimum of a 3.3uF filter capacitor.
FT2232H Configurations
VBUS
GND
D+
D-
1
6
3
2
5
1
2
3
4
0Ω
CS
ORG
D
GND
SCL
93C46
GND
GND
100nF
VCC
DU
10K
Q
Copyright © 2010 Future Technology Devices International Limited
8
4
7
+3.3V
GND
10K
+3.3V
Vin
+3.3V
LDO +3.3V
GND
+3.3V
GND
10K
Vout
2.2K
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
+3.3V
GND
GND
100nF
12K
GND
+3.3V
EECLK
EEDATA
27pF
1
+1.8V
12MHz
1K
GND
3
4.7uF
GND
GND
27pF
GND
3.3uF
4.7uF
50
49
14
63
62
61
13
7
8
6
2
3
GND
100nF 100nF
VREGOUT
VREGIN
RESET#
DM
DP
REF
OSCI
TEST
EECS
EECLK
OSCO
EEDATA
GND
+1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
GND
100nF
+1.8V
GND
100nF 100nF
GND
Document No.: FT_000061
GND
SUSPEND#
+3.3V
Clearance No.: FTDI#77
PWREN#
Datasheet Version 2.10
ADBUS0
ADBUS1
ADBUS2
ADBUS3
ADBUS4
ADBUS5
ADBUS6
ADBUS7
ACBUS0
ACBUS1
ACBUS2
ACBUS3
ACBUS4
ACBUS5
ACBUS6
ACBUS7
BCBUS0
BCBUS1
BCBUS2
BCBUS3
BCBUS4
BCBUS5
BCBUS6
BCBUS7
BDBUS0
BDBUS1
BDBUS2
BDBUS3
BDBUS4
BDBUS5
BDBUS6
BDBUS7
GND
100nF 100nF 100nF 100nF
GND
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
GND
GND
49