FT2232H_12 Datasheet, PDF (6/67 Pages) Future Technology Devices International Ltd. – Dual High Speed USB to Multipurpose UART/FIFO IC

Document No.: FT_000061
FT2232H DUAL HIGH SPEED USB TO MULTIPURPOSE UART/FIFO IC
Version 2.21
Clearance No.: FTDI#77
Table of Contents
1 Typical Applications...................................................................... 3
1.1 Driver Support .................................................................................... 3
1.2 Part Numbers...................................................................................... 4
1.3 USB Compliant .................................................................................... 4
2 FT2232H Block Diagram ............................................................... 5
3 Device Pin Out and Signal Description .......................................... 8
3.1 64-Pin LQFP and 64-Pin QFN Package Schematic Symbol ................... 8
3.2 FT2232H Pin Descriptions ................................................................... 9
3.3 Common Pins .................................................................................... 10
3.4 Configured Pins ................................................................................ 12
3.4.1 FT2232H pins used in an RS232 interface ..................................................................... 12
3.4.2 FT2232H pins used in an FT245 Style Synchronous FIFO Interface ................................... 13
3.4.3 FT2232H pins used in an FT245 Style Asynchronous FIFO Interface ................................. 14
3.4.4 FT2232H pins used in a Synchronous or Asynchronous Bit-Bang Interface ........................ 15
3.4.5 FT2232H pins used in an MPSSE .................................................................................. 16
3.4.6 FT2232H Pins used as a Fast Serial Interface ................................................................ 17
3.4.7 FT2232H Pins Configured as a CPU-style FIFO Interface ................................................. 18
3.4.8 FT2232H Pins Configured as a Host Bus Emulation Interface ........................................... 19
4 Function Description................................................................... 20
4.1 Key Features..................................................................................... 20
4.2 Functional Block Descriptions ........................................................... 20
4.3 Dual Port FT232 UART Interface Mode Description ........................... 22
4.3.1 Dual Port RS232 Configuration .................................................................................... 22
4.3.2 Dual Port RS422 Configuration .................................................................................... 23
4.3.3 Dual Port RS485 Configuration .................................................................................... 25
4.4 FT245 Synchronous FIFO Interface Mode Description ...................... 27
4.4.1 FT245 Synchronous FIFO Read Operation ..................................................................... 28
4.4.2 FT245 Synchronous FIFO Write Operation ..................................................................... 28
4.5 FT245 Asynchronous FIFO Interface Mode Description..................... 29
4.6 MPSSE Interface Mode Description. .................................................. 31
4.6.1 MPSSE Adaptive Clocking............................................................................................ 32
4.7 MCU Host Bus Emulation Mode ......................................................... 33
4.7.1 MCU Host Bus Emulation Mode Signal Timing – Write Cycle............................................. 34
4.7.2 MCU Host Bus Emulation Mode Signal Timing – Read Cycle ............................................. 35
4.8 Fast Opto-Isolated Serial Interface Mode Description ...................... 37
Copyright © 2012 Future Technology Devices International Limited
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