FT2232H Dual High Speed USB to Multipurpose UART/FIFO IC Datasheet
Version 2.6
Document No.: FT_000061 Clearance No.: FTDI#77
4.3.1
4.3.2
4.3.3
Dual Port RS232 Configuration.................................................................. 28
Dual Port RS422 Configuration.................................................................. 29
Dual Port RS485 Configuration.................................................................. 30
4.4
FT245 Synchronous FIFO Interface Mode Description ....... 31
FT245 Synchronous FIFO Read Operation................................................... 32
FT245 Synchronous FIFO Write Operation................................................... 32
4.4.1
4.4.2
4.5
4.6
FT245 Asynchronous FIFO Interface Mode Description ..... 32
MPSSE Interface Mode Description.................................... 34
4.6.1
MPSSE Adaptive Clocking ......................................................................... 35
4.7
MCU Host Bus Emulation Mode .......................................... 35
MCU Host Bust Emulation Mode Signal Timing – Write Cycle ......................... 36
MCU Host Bust Emulation Mode Signal Timing – Read Cycle.......................... 37
4.7.1
4.7.2
4.8
Fast Opto-Isolated Serial Interface Mode Description ....... 38
Outgoing Fast Serial Data......................................................................... 39
Incoming Fast Serial Data......................................................................... 39
Fast Opto-Isolated Serial Data Interface Example........................................ 40
4.8.1
4.8.2
4.8.3
4.9
4.10
CPU-Style FIFO Interface Mode Description ...................... 40
Synchrnous and Asynchronous Bit-Bang Interface Mode
Description....................................................................................... 42
4.11
4.12
4.13
RS232 UART Mode LED Interface Description.................... 44
Send Immediate / Wake Up (SIWU#)............................... 45
FT2232H Mode Selection ................................................... 46
4.13.1
Do I need an EEPROM? ............................................................................ 46
5
Devices Characteristics and Ratings .................... 47
Absolute Maximum Ratings ............................................... 47
DC Characteristics ............................................................. 47
ESD Tolerance ................................................................... 49
Thermal Characteristics..................................................... 49
5.1
5.2
5.3
5.4
6
FT2232H Configurations ...................................... 50
USB Bus Powered Configuration........................................ 50
USB Self Powered Configuration........................................ 52
Oscillator Configuration..................................................... 54
6.1
6.2
6.3
7
EEPROM Configuration......................................... 55
Default EEPROM Configuration .......................................... 56
Package Parameters............................................ 57
7.1
8
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