TTL234X SERIES RANGE OF CABLES Datasheet
Version 1.0
Document Reference No.: FT_001394 Clearance No.: FTDI#520
Appendix A - Cable MTP MEMORY Configuration
Each TTL-234X cable is controlled by the FTDI FT234XD IC. This FT234XD device contains an MTP
MEMORY which contains the USB configuration descriptors for that device. When the cable is plugged into
a PC or a USB reset is performed, the PC will read these descriptors. The default values stored into the
internal MTP MEMORY are defined in Table 0.1
Parameter
Value
0403h
6015h
Yes
Notes
FTDI default VID (hex)
FTDI default PID (hex)
USB Vendor ID (VID)
USB Product UD (PID)
Serial Number Enabled?
A unique serial number is generated and programmed
into the MTP MEMORY during device final test.
Enabling this option will make the device pull down on the
UART interface lines when the power is shut off (PWREN#
is high).
Serial Number
See Note
Pull down I/O Pins in USB
Suspend
Disabled
FTDI
Manufacturer Name
Product Description
Product description depends on the cable. The following
lists the Product description for each different cable.
TTL-234X-5V
TTL-234X-3V3
TTL-234X-5V-AJ
See note
TTL-234X-3V3-AJ
TTL-234X-5V-WE
TTL-234X-3V3-WE
TTL-234X-3V3-2mm
Max Bus Power Current
Power Source
90mA
Bus Powered
FT234XD
Device Type
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).
USB Version
0200
Remote Wake Up
Load VCP Driver
Disabled
Enabled
Makes the device load the VCP driver interface for the
device
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.
Invert TXD
Invert RXD
Invert RTS#
Invert CTS#
Disabled
Disabled
Disabled
Disabled
Table 0.1 Default Internal MTP MEMORY Configuration
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