Chipi-X Cable Datasheet
Version 1.0
Document Reference No.: FT_000634
Clearance No.: FTDI# 288
8
Internal MTP ROM Configuration
Following a power-on reset or a USB reset the FT231X 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
FT231XS used on the Chipi-X are shown in Table 8.1.
Parameter
USB Vendor ID (VID)
USB Product UD (PID)
Serial Number Enabled?
Serial Number
Pull down I/O Pins in USB
Suspend
Manufacturer Name
Product Description
Max Bus Power Current
Power Source
Device Type
USB Version
Remote Wake Up
High Current I/Os
Load VCP Driver
CBUS0
CBUS1
CBUS2
CBUS3
Invert UART
Value
0403h
6015h
Yes
See Note
Disabled
FTDI
Chipi-X
90mA
Bus Powered
FT231X
0200
Enabled
Disabled
Enabled
Tristate
Tristate
Tristate
SLEEP#
Disabled
Notes
FTDI default VID (hex)
FTDI default PID (hex)
A unique serial number is generated and programmed into
the MTP ROM during final test of the UM232R module.
Enabling this option will make the device pull down on the
UART interface lines when the power is shut off (PWREN#
is high).
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 UART and CBUS I/O
pins.
Makes the device load the VCP driver interface for the
device.
Signal on this pin becomes TXD# if enable.
Table 8.1 – Default Internal MTP ROM Configuration
The internal MTP ROM in the FT231X 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, also see TN_100 and TN_101 .
8
Copyright ? 2012 Future Technology Devices International Limited
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