UM245R FTDI, Future Technology Devices International Ltd, UM245R Datasheet - Page 24

• Manufacturer Part Number: UM245R
• Description: MODULE USB-PAR FIFO TTL 24-DIP
• Manufacturer: FTDI, Future Technology Devices International Ltd

Specifications of UM245R

• Main Purpose: Interface, USB 2.0 to Parallel FIFO Bridge
• Embedded: No
• Utilized Ic / Part: FT245R
• Primary Attributes: 300kBps to 1MBps USB to parallel FIFO via 4-Wire Interface
• Secondary Attributes: Royalty-Free Drivers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 768-1020

9
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 the
FT245RL used on the UM245R are shown in Table 9.1.
Parameter
USB Vendor ID (VID)
USB Product UD (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
Remote Wake Up
High Current I/Os
Load VCP Driver
The internal EEPROM in the FT245R can be programmed over USB using the utility program FT_PROG.
FT_PROG can be downloaded from the www.ftdichip.com. 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
© Copyright 2009 Future Technology Devices International Ltd
Table 9.1 Default Internal EEPROM Configuration
Internal EEPROM Configuration
FTDI Support
UM245R USB - Parallel FIFO Development Module Datasheet Version 1.04
UM245R USB <->
Bus Powered
([e-mail]) for this service.
See Note
Disabled
Disabled
Enabled
Enabled
FT245R
100mA
0403h
6001h
Value
Serial
0200
FTDI
Yes
FT
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 description to the host.
Note: The device is a USB 2.0 Full Speed device (12Mb/s)
as opposed to a USB 2.0 High Speed device (480Mb/s).
Taking RI# 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.
Document Reference No.: FT_000202
Clearance No.: FTDI# 124
23