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參數(shù)資料
| 型號： | FT2232HQ-REEL |
| 廠商： | FTDI, Future Technology Devices International Ltd |
| 文件頁數(shù)： | 41/67頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB HS DUAL UART/FIFO 64-QFN |
| 標準包裝： | 1 |
| 系列： | USBmadeEZ-FIFO，F(xiàn)T-X，X-Chip |
| 特點： | USB 至 UART 和（或）FIFO、SPI、I2C、JTAG |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 4096 字節(jié) |
| 規(guī)程： | RS232，RS422，RS485 |
| 電源電壓： | 3 V ~ 3.6 V |
| 帶并行端口： | 是 |
| 帶自動流量控制功能： | 是 |
| 帶調制解調器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 64-QFN |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 634 (CN2011-ZH PDF) |
| 其它名稱： | 768-1025-6 |
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Copyright 2012 Future Technology Devices International Limited
46
Document No.: FT_000061
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Version 2.21
Clearance No.: FTDI#77
FT2232H Mode Selection
The 2 channels of the FT2232H reset to 2 asynchronous serial interfaces.
Following a reset the required mode of each channel is determined by the contents of the EEPROM
(programmed using MPROG V3.4a or later).
The EEPROM contents determine if the 2 channels have been configured as FT232 asynchronous serial
interface, FT245 FIFO interface, CPU-style FIFO interface or Fast Serial Interface.
Following a reset, the EEPROM is read to determine which mode is configured. After device enumeration,
an FT_SetBitMode command (refer to D2XX_Programmers_Guide) can be sent to the USB driver to
switch the selected interface into the required mode – asynchronous bit-bang, synchronous bit-bang or
MPSSE.
When in FT245 FIFO mode, the FT_SetBitMode command can be used to select either Synchronous
FIFO (FT_SetBitMode = 0x40) or Asynchronous FIFO mode. (Note that Asynchronous FIFO mode must
be selected on both channels before selecting the Synchronous FIFO mode. This means that an EEPROM
is needed to initially configure Asynchronous FIFO mode before software configures the Synchronous
FIFO mode).
When Synchronous FIFO mode selected, channel A uses all the memory resources of channel B. As such
channel B is then not available. In this case the state of the channel B pins is determined when the
configuration is switched to Asynchronous FIFO mode. If channel B had not been used for any data
transfer before configuration of Asynchronous FIFO mode, then the channel B pins will remain in their
default mode (D7:0=tri-stated but pulled high trough 75K resistor, TXE# =low, RXF# =high. RD# and
WR# are inputs and should be pulled high). An MPSSE command, set_data_bits can be used to
configure the channel B pins as inputs before configuring channel A as Synchronous FIFO. This avoids the
channel B pins driving against any interfaces (such as SPI) which may have been configured previous to
any switching of channel A to Synchronous FIFO mode. Refer to
http://www.ftdichip.com/Documents/AppNotes/AN2232C-01_MPSSE_Cmnd.pdf for the set_data_bits
command and further information on the MPSSE used in MCU Host BUS Emulation mode.
The MPSSE can be configured directly using the D2XX commands. The D2XX_Programmers_Guide is
available from the FTDI website at
The application note AN_108 – “Command Processor For MPSSE and MCU Host Bus Emulation
Modes” gives further explanation
and examples for the MPSSE.
4.12.1
Do I need an EEPROM?
The following table Table 4.11summarises what modes are configurable using the EEPROM or the
application software.
ASYNC
Serial
UART
ASYNC
245
FIFO
SYNC
245
FIFO
ASYN
C Bit-
bang
SYNC
Bit-
bang
MPSSE
Fast
Serial
interface
CPU-
Style
FIFO
Host Bus
Emulation
EEPROM
configured
YES
Application
Software
configured
YES
Table 4.11 Configuration Using EEPROM and Application Software
相關PDF資料 |
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|---|---|
| FT232BL-REEL | IC USB FS SERIAL UART 32-LQFP |
| FT232HL-REEL | IC HS USB TO UART/FIFO 48LQFP |
| FT232RL-REEL | IC USB FS SERIAL UART 28-SSOP |
| FT245BL-REEL | IC USB FS PARALLEL FIFO 32-LQFP |
| FT245RL-REEL | IC USB TO PARALLEL FIFO 28-SSOP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FT2232HQ-TRAY | 功能描述:USB 接口集成電路 USB HS to Dual UART/ FIFO/SPI/JTAG/I2C RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)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 |
| FT2232L | 功能描述:UART 接口集成電路 Obsolete See FT2232D-REEL RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| FT2232L/TR | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB UART/FIFO SMD 2232 LQFP48 |
| FT22L | 功能描述:OVEN FOOD PROBE RoHS:是 類別:測試設備 >> 測試引線 - 熱電偶，溫度探頭 系列:FT 標準包裝:1 系列:6543 類型:J 型熱電偶 使用:液體，半固體 尖端 - 類型:防浸漬 / 穿透式，圓頭 插頭類型:超微型（熱電偶插頭） 探針溫度范圍:-40 ~ 2000°F（-40 ~ 1093°C） 線纜長度:- 線纜絕緣:- 插頭顏色:黑 探針長度:12.000"（304.80mm） 探針材料:- |
| FT230A | 制造商:Black Box Corporation 功能描述:HAND STRIPPER |
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