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UMFT234XD Datasheet

Version 1.1

Document Reference No.: FT_000801

Clearance No.: FTDI#

327

8

Internal MTP ROM Configuration

Following a power-on reset or a USB reset the FT234XD will scan its internal MTP ROM and read the USB

configuration descriptors stored there. The default values programmed into the internal MTP ROM in the

FT234XD used on the UMFT234XD are shown in Table 8.1.

Parameter

Value

Notes

USB Vendor ID (VID)

0403h

FTDI default VID (hex)

USB Product UD (PID)

6015h

FTDI default PID (hex)

Serial Number Enabled?

Yes

Serial Number

See Note

A unique serial number is generated and programmed into

the MTP ROM during final test of the UMFT234XD module.

Pull down I/O Pins in USB

Suspend

Disabled

Enabling this option will make the device pull down on the

UART interface lines when the power is shut off (PWREN#

is high).

Manufacturer Name

FTDI

Product Description

UMFT234XD

Max Bus Power Current

90mA

Power Source

Bus Powered

Device Type

FT234XD

USB Version

0200

Returns USB 2.0 device description to the host. Note: The

device is a USB 2.0 Full Speed device (12Mb/s).

Remote Wake Up

Enabled

Taking RI# low will wake up the USB host controller from

suspend.

High Current I/Os

Disabled

Enables the high drive level on the serial and CBUS I/O

pins.

Load VCP Driver

Enabled

Makes the device load the VCP driver interface for the

device.

CBUS0

PWREN#

Table 8.1 Default Internal MTP ROM Configuration

The internal MTP ROM in the FT234XD can be programmed over USB using the utility program FT_PROG.

FT_PROG can be downloaded from 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 FTDI Support (support1@ftdichip.com) for this service.