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參數(shù)資料
| 型號： | FT2232HL-TRAY |
| 廠商： | Future Technology Devices International Ltd |
| 元件分類： | 總線控制器 |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQFP64 |
| 封裝： | LEAD FREE, LQFP-64 |
| 文件頁數(shù)： | 32/63頁 |
| 文件大?。?/td> | 1598K |
| 代理商： | FT2232HL-TRAY |
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Copyright 2010 Future Technology Devices International Limited
38
Document No.: FT_000061
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 2.10
Clearance No.: FTDI#77
4.9 CPU-style FIFO Interface Mode Description
CPU-style FIFO interface mode is designed to allow a CPU to interface to USB via the FT2232H. This mode
is enabled in the external EEPROM. The interface is achieved using a chip select bit (CS#) and address bit
(A0). When either Channel A or Channel B are in CPU-style Interface mode the IO signal lines are
configured as given in Table 3.10.
This mode uses a combination of CS# and A0 to determine the operation to be carried out. The following
truth-table, Table 4.7, gives the decode values for particular operations.
CS#
A0
RD#
WR#
1
X
0
Read Data Pipe
Write Data Pipe
0
1
Read Status
Send Immediate
Table 4.7 CPU-Style FIFO Interface Operation Select
The Status read is shown in Table 4.8
Data Bit
Data
Status
bit 0
1
Data available (=RXF)
bit 1
1
Space available (=TXE)
bit 2
1
Suspend
bit 3
1
Configured
bit 4
X
bit 5
X
bit 6
X
bit 7
X
Table 4.8 CPU-Style FIFO Interface Operation Read Status Description
Note that bits 7 to 4 can be arbitrary values and that X= not used.
The timing of reading and writing in this mode is shown in Figure 4.17 and Table 4.9.
CS#
WR#
RD#
A0
Valid
t3
t1
t2
t4
t5
t6
t7
D7..0
Figure 4.17 CPU-Style FIFO Interface Operation Signal Waveforms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FT2232HMINIMODULE | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB Hi-Speed FT2232H Evaluation Module 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB to serial/FIFO development module |
| FT2232H-MINI-MODULE | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:IC,EVALUATION MODULE;FT2232H;USB HI-SPEED |
| FT2232HQ | 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB Hi-Speed to Dual Channel Serial UART/FIFO/JTAG/SPI/I2C IC - QFN-64 |
| FT2232HQ_MINI_ MODULE | 功能描述:界面開發(fā)工具 USB Hi-Speed FT2232H Evaluation Module RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| FT2232HQ-4000 | 制造商:FTDI 制造商全稱:FTDI 功能描述:DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC |
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