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Copyright © 2009 Future Technology Devices International Limited 33
Document No.: FT_000053
FT232R USB UART IC Datasheet Version 2.02
Clearance No.: FTDI# 38
Parameter Value Notes
CBUS4 SLEEP#
Default configuration of CBUS4 – Low during USB
suspend mode.
Invert TXD Disabled Signal on this pin becomes TXD# if enable.
Invert RXD Disabled Signal on this pin becomes RXD# if enable.
Invert RTS# Disabled Signal on this pin becomes RTS if enable.
Invert CTS# Disabled Signal on this pin becomes CTS if enable.
Invert DTR# Disabled Signal on this pin becomes DTR if enable.
Invert DSR# Disabled Signal on this pin becomes DSR if enable.
Invert DCD# Disabled Signal on this pin becomes DCD if enable.
Invert RI# Disabled Signal on this pin becomes RI if enable.
Table 8.1 Default Internal EEPROM Configuration
The internal EEPROM in the FT232R can be programmed over USB using the FTDI utility program MPROG.
MPROG can be downloaded from FTDI Utilities on the FTDI website (www.ftdichip.com). Version 2.8a or
later is required for the FT232R chip. Users who do not have their own USB Vendor ID but who would like
to use a unique Product ID in their design can apply to FTDI for a free block of unique PIDs. Contact FTDI
support for this service.