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参数资料
| 型号： | FT2232D-REEL |
| 厂商： | FTDI, Future Technology Devices International Ltd |
| 文件页数： | 22/61页 |
| 文件大小： | 0K |
| 描述： | IC USB FS DUAL UART/FIFO 48-LQFP |
| 产品培训模块： | USB Introduction |
| 标准包装： | 1 |
| 系列： | USBmadeEZ-FIFO，FT-X，X-Chip |
| 特点： | USB 至 UART 和（或）FIFO、SPI、I2C、JTAG |
| 通道数： | 2，DUART |
| FIFO's： | 384 字节 |
| 规程： | RS232，RS422，RS485 |
| 电源电压： | 4.35 V ~ 5.25 V |
| 带并行端口： | 是 |
| 带自动流量控制功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP |
| 包装： | 标准包装 |
| 产品目录页面： | 634 (CN2011-ZH PDF) |
| 配用： | 768-1030-ND - MOD USB HS FT2232H EVAL 813-1009-ND - MODULE USB-TO-FPGA TOOL W/MANUAL 813-1001-ND - MODULE USB ADAPTR FOR FT2232D LP 813-1000-ND - MODULE USB ADAPTER FOR FT2232D |
| 其它名称： | 768-1010-6 |
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Copyright 2010 Future Technology Devices International Limited
29
Document No.: FT_000173
FT2232D DUAL USB TO SERIAL UART
/FIFO IC Datasheet
Version 2.05
Clearance No.: FTDI# 127
7.1 EEPROM Configurations
Figure 7.3 EEPROM Configuration
Figure 7.3 illustrates how to connect the FT2232D to the 93C46 (93C56 or 93C66) EEPROM. EECS (pin
48) is directly connected to the chip select (CS) pin of the EEPROM. EESK (pin 1) is directly connected to
the clock (SK) pin of the EEPROM. EEDATA (pin 2) is directly connected to the Data In (Din) pin of the
EEPROM. There is a potential condition whereby both the Data Output (Dout) of the EEPROM can drive
out at the same time as the EEDATA pin of the FT2232D. To prevent potential data clash in this situation,
the Dout of the EEPROM is connected to EEDATA of the FT2232D via a 2.2K resistor.
Following a power-on reset or a USB reset, the FT2232D will scan the EEPROM to find out (a) if an
EEPROM is attached to the Device and (b) if the data in the device is valid. If both of these are the case,
then the FT2232D will use the data in the EEPROM, otherwise it will use its built-in default values and
configuration. The default port configuration of the FT2232D puts both Channel A and Channel B into
serial UART mode.
When a valid command is issued to the EEPROM from the FT2232D, the EEPROM will acknowledge the
command by pulling its Dout pin low. In order to check for this condition, it is necessary to pull Dout high
using a 10K resistor. If the command acknowledge doesnt happen then EEDATA will be pulled high by
the 10K resistor during this part of the cycle and the device will detect an invalid command or no EEPROM
present.
There are two varieties of 93C46/56/66 EEPROMs on the market – one is configured as being 16 bits
wide, the other is configured as being 8 bits wide. These are available from many sources such as
Microchip, STMicro, ISSI etc. The FT2232D requires EEPROMs with a 16-bit wide configuration such as
the Microchip 93LC46B device. The EEPROM must be capable of reading data at a 1Mb clock rate at a
supply voltage of 4.35V to 5.25V. Most available parts are capable of this. Check the manufacturers data
sheet to find out how to connect pins 6 and 7 of the EEPROM. Some devices specify these as no-connect,
others use them for selecting 8 / 16 bit mode or for test functions. Some other parts have their pinout
rotated by 90o so please select the required part and its options carefully.
相关PDF资料 |
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| FT2232HQ-REEL | IC USB HS DUAL UART/FIFO 64-QFN |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| FT2232D-TRAY | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:DUAL USB TO SERIAL UART/FIFO IC |
| FT2232H | 制造商:FTDI 制造商全称:FTDI 功能描述:DUAL HIGH SPEED USB TO MULTIPURPOSE UART |
| FT2232H MINI MODULE | 功能描述:界面开发工具 USB Hi-Speed FT2232H Evaluation Module RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| FT2232H_10 | 制造商:FTDI 制造商全称:FTDI 功能描述:DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC |
| FT2232H_12 | 制造商:FTDI 制造商全称:FTDI 功能描述:Dual High Speed USB to Multipurpose UART/FIFO IC |
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