FT232R Future Technology Devices Intl Ltd., FT232R Datasheet - Page 11

• Manufacturer Part Number: FT232R
• Manufacturer: Future Technology Devices Intl Ltd.

The following options can be configured on the CBUS I/O pins. CBUS signal options are common to both package
versions of the FT232R. These options are all configured in the internal EEPROM using the utility software MPROG,
which can be downloaded from the
Table 3 - CBUS Signal Options
FT232R USB UART I.C. Datasheet Version 1.02
CBUS Signal Option Available On CBUS Pin...
TXDEN
PWREN#
TXLED#
RXLED#
TX&RXLED#
SLEEP#
CLK48
CLK24
CLK12
CLK6
CBitBangI/O
BitBangWRn
BitBangRDn
4.5 CBUS Signal Options
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3, CBUS4
CBUS0, CBUS1, CBUS2, CBUS3
CBUS0, CBUS1, CBUS2, CBUS3
CBUS0, CBUS1, CBUS2, CBUS3
FTDI
website. The default configuration is described in
Description
Enable transmit data for RS485
Goes low after the device is configured by USB, then high during
USB suspend. Can be used to control power to external logic P-
Channel logic level MOSFET switch. Enable the interface pull-down
option when using the PWREN# pin in this way.
Transmit data LED drive - pulses low when transmitting data via
USB. See
Receive data LED drive - pulses low when receiving data via USB.
See
LED drive - pulses low when transmitting or receiving data via
USB. See
Goes low during USB suspend mode. Typically used to power down
an external TTL to RS232 level converter I.C. in USB to RS232
converter designs.
48MHz Clock output.
24MHz Clock output.
12MHz Clock output.
6MHz Clock output.
CBUS bit bang mode option. Allows up to 4 of the CBUS pins to be
used as general purpose I/O. Configured individually for CBUS0,
CBUS1, CBUS2 and CBUS3 in the internal EEPROM. A separate
application note will describe in more detail how to use CBUS bit
bang mode.
Synchronous and asynchronous bit bang mode WR# strobe Output
Synchronous and asynchronous bit bang mode RD# strobe Output
Section 9
Section 9
Section 9
© Future Technology Devices International Ltd. 2005
for more details.
for more details.
for more details.
Section
10.