FT230X USB TO BASIC UART IC
Document No.: FT_000566 Clearance No.: FTDI# 260
Version 1.2
Parameter
Value
Notes
Enable
CBUS Drive Current
Strength
CBUS slew rate
CBUS Schmitt Trigger
Enable
Load VCP Driver
4mA
Slow
Normal
Options are 4mA, 8mA, 12mA, 16mA
Options are slow or fast
Options are normal or Schmitt
Makes the device load the VCP driver interface for
the device.
Default configuration of CBUS0 – Transmit data
enable for RS485
Default configuration of CBUS1 – Receive LED drive.
Default configuration of CBUS2 – Transmit LED
drive.
Default configuration of CBUS3 – SLEEP#, goes
active low when the device is in suspend
Signal on this pin becomes TXD# if enable.
Signal on this pin becomes RXD# if enable.
Signal on this pin becomes RTS if enable.
Signal on this pin becomes CTS if enable.
Enabled**
CBUS0
CBUS1
CBUS2
TXDEN
RXLED#
TXLED#
CBUS3
Invert TXD
Invert RXD
Invert RTS#
Invert CTS#
SLEEP#
Disabled
Disabled
Disabled
Disabled
Table 8.1 Default Internal MTP Memory Configuration
**VCP disabled in Rev B silicon in error
8.2 Methods of Programming the MTP Memory
8.2.1 Programming the MTP memory over USB
The MTP memory on all FT-X devices can be programmed over USB. This method is the same as for the
EEPROM on other FTDI devices such as the FT232R. No additional hardware, connections or programming
voltages are required. The device is simply connected to the host computer in the same way that it would
be for normal applications, and the FT_Prog utility is used to set the required options and program the
device.
The FT_Prog utility is provided free-of-charge from the FTDI website, and can be found at the link below.
The user guide is also available at this link.
Additionally, D2XX commands can be used to program the MTP memory from within user applications.
For more information on the commands available, please see the D2XX Programmers Guide below.
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