參數(shù)資料
型號: FT2232HQ-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, PQCC64
封裝: LEAD FREE, QFN-64
文件頁數(shù): 15/63頁
文件大?。?/td> 1598K
代理商: FT2232HQ-TRAY
Copyright 2010 Future Technology Devices International Limited
22
Document No.: FT_000061
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Datasheet Version 2.10
Clearance No.: FTDI#77
4.3.2 Dual Port RS422 Configuration
Figure 4.2 illustrates how the FT2232H can be configured as a dual RS422 interface.
Figure 4.2 Dual RS422 Configuration
In this case both channel A and channel B are configured as UART operating at TTL levels and a level
converter device (full duplex RS485 transceiver) is used to convert the TTL level signals from the
FT2232H to RS422 levels. The PWREN# signal is used to power down the level shifters such that they
operate in a low quiescent current when the USB interface is in suspend mode.
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