UM245R Datasheet, PDF (18/19 Pages) Future Technology Devices International Ltd. – USB-Parallel FIFO Development Module Incorporating FTDIChip-ID™ Security Dongle

Page 18
8. Internal EEPROM Configuration
Following a power-on reset or a USB reset the FT245RL will scan its internal EEPROM and read the USB
configuration descriptors stored there. The default values programmed into the internal EEPROM in the FT245RL
used on the UM245R are shown in Table 18.
Table 18 - Default Internal EEPROM Configuration
Parameter
USB Vendor ID (VID)
Value
0403h
USB Product ID (PID)
6001h
Serial Number Enabled?
Yes
Serial Number
See Note
Pull Down I/O Pins in USB Suspend
Disabled
Manufacturer Name
Manufacturer ID
Product Description
Max Bus Power Current
Power Source
Device Type
USB Version
FTDI
FT
UM245R USB <->
Parallel
100mA
Bus Powered
FT245R
0200
Remote Wake up
High Current I/Os
Load VCP Driver
Enabled
Disabled
Enabled
Notes
FTDI default VID (hex)
FTDI default PID (hex)
A unique serial number is generated and programmed into the EEPROM
during final test of the UM245R module.
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.
The internal EEPROM in the FT245R can be programmed over USB using the utility program MPROG. MPROG can
be downloaded from the FTDI website. 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 FTDI support for this service.
UM245R USB-Parallel FIFO Development Module Datasheet Version 1.02
© Future Technology Devices International Ltd. 2005