參數(shù)資料
型號： FT2232C
廠商： Electronic Theatre Controls, Inc.
英文描述： FT2232C Dual USB UART / FIFO I.C.
中文描述： FT2232C雙USB的UART / FIFO的集成電路
文件頁數(shù)： 22/51頁
文件大?。?/td> 907K
代理商： FT2232C
DS2232C Version 1.4
Future Technology Devices International Ltd. 2005 Page 22 of 54
FT2232C Dual USB UART / FIFO I.C.
Figure 9 - USB Self Powered Configuration
Figure 9 illustrates the FT2232C in a typical USB self powered configuration. A USB Self Powered device gets its
power from its own POWER SUPPLY and does not draw current from the USB bus. The basic rules for USB Self
power devices are as follows –
a) A Self-Powered device should not force current down the USB bus when the USB Host or Hub Controller is
powered down.
b) A Self Powered Device can take as much current as it likes during normal operation and USB suspend as it has its
own POWER SUPPLY.
c) A Self Powered Device can be used with any USB Host and both Bus and Self Powered USB Hubs.
The USB power descriptor option in the EEPROM should be programmed to a value of zero (self powered).
To meet requirement a) the 1.5K pull-up resistor on USBDP is connected to RSTOUT# as per the bus-power circuit.
However, the USB Bus Power is used to control the RESET# Pin of the FT2232C device. When the USB Host or
Hub is powered up RSTOUT# will pull the 1.5K resistor on USBDP to 3.3V, thus identifying the device as a full speed
device to USB. When the USB Host or Hub power is off, RESET# will go low and the device will be held in reset. As
RESET# is low, RSTOUT# will also be low, so no current will be forced down USBDP via the 1.5K pull-up resistor
when the host or hub is powered down. Failure to do this may cause some USB host or hub controllers to power up
erratically.
Note : When the FT2232C is in reset, the I/O interface pins all go tri-state. These pins have internal 200K pull-up
resistors to VCCIO, so they will gently pull high unless driven by some external logic.
VCC
27R
USB "B"
Connector
27R
USB DM
RSTOUT#
8
FT2232C
USB DP
7
5
V
C
C
V
C
C
V
C
C
I
O
A
3
42
14
1
2
3
4
1.5K
33nF
3v3OUT
6
470R
A
V
C
C
46
0.1uF
G
N
D
G
N
D
A
G
N
D
45
25 34
RESET#
4
10K
4.7K
Decoupling Capacitors
10uF
VCC
0.1uF
0.1uF
+
V
C
C
I
O
B
31
TEST
9
18
47
G
N
D
G
N
D
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相關代理商/技術參數(shù)
參數(shù)描述
FT2232C_04 制造商:FTDI 制造商全稱:FTDI 功能描述:Dual USB UART / FIFO I.C.
FT2232D 制造商:Future Technology Devices International 功能描述:UART 2-CH 3.3V/5V 48-Pin LQFP 制造商:Future Technology Devices International 功能描述:UART 2-CH 3.3V/5V 48-Pin LQFP Bulk 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB Full Speed to Dual Channel Serial UART/FIFO/JTAG/SPI/I2C IC - LQFP-48
FT2232D/TR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO SMD 2232 LQFP48 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO, SMD, 2232, LQFP48 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB-UART/FIFO, SMD, 2232, LQFP48; USB Type:FIFO; USB Version:2.0; Supply Voltage Min:3V; Supply Voltage Max:5.25V; Digital IC Case Style:LQFP; No. of Pins:48; Data Rate:12Mbps; No. of Ports:2; Operating Temperature Min:-40C ;RoHS Compliant: Yes
FT2232D-REEL 功能描述:USB 接口集成電路 USB to Dual UART/ FIFO/SPI/JTAG/I2C RoHS:否 制造商:Cypress Semiconductor 產品:USB 2.0 數(shù)據速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:WLCSP-20
FT2232D-TRAY 制造商:Future Technology Devices International (FTDI Chip) 功能描述:DUAL USB TO SERIAL UART/FIFO IC
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