10. Internal EEPROM Configuration
Page 24
Following a power-on reset or a USB reset the FT245R will scan its internal EEPROM and read the USB configuration
descriptors stored there. The default values programmed into the internal EEPROM in a brand new device are defined
in Table 19.
Table 19 - Default Internal EEPROM Configuration
Parameter
USB Vendor ID (VID)
USB Product ID (PID)
Serial Number Enabled?
Serial Number
Pull Down I/O Pins in USB Suspend
Manufacturer Name
Manufacturer ID
Product Description
Max Bus Power Current
Power Source
Device Type
USB Version
Value
0403h
6001h
Yes
See Note
Disabled
FTDI
FT
FT245R USB FIFO
90mA
Bus Powered
FT245R
0200
Notes
FTDI default VID (hex)
FTDI default PID (hex)
A unique serial number is generated and programmed into the EEPROM
during device final test.
Enabling this option will make the device pull down on the FIFO interface
lines when the power is shut off (PWREN# is high)
Serial number prefix
Returns USB 2.0 device descriptor to the host. Note: The device is be
a USB 2.0 Full Speed device (12Mb/s) as opposed to a USB 2.0 High
Speed device (480Mb/s).
Taking RXF# low will wake up the USB host controller from suspend.
Enables the high drive level on the FIFO data bus and control I/O pins
Makes the device load the VCP driver interface for the device.
Remote Wake up
High Current I/Os
Load VCP Driver
Enabled
Disabled
Enabled
The internal EEPROM in the FT245R can be programmed over USB using the utility program MPROG. MPROG can
be downloaded from the
Version 2.8a or later is required for the FT245R 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
for this service.
FT245R USB UART I.C. Datasheet Version 1.05
© Future Technology Devices International Ltd. 2005
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
