Datasheet

9
Copyright © 2012 Future Technology Devices International Limited
TTL-232R-RPi
Version 1.0
Document Reference No.: FT_000722 Clearance No.: FTDI# 296
8 Internal EEROM Configuration
The TTL-232R-RPi Debug cable is controlled by the FTDI FT232R IC. This FT232R device contains an
EEPROM 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 EEPROM are defined in Table 8.1
Parameter
Value
Notes
USB Vendor ID (VID)
0403h
FTDI default VID (hex)
USB Product UD (PID)
6001h
FTDI default PID (hex)
Serial Number Enabled?
Yes
Serial Number
See Note
A unique serial number is generated and programmed into the
EEPROM during device final test.
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
TTL232R-3V3
Max Bus Power Current
90mA
Power Source
Bus Powered
Device Type
FT232R
USB Version
0200
Returns USB 2.0 device description to the host.
Remote Wake Up
Disabled
High Current I/Os
Enabled
Enables the high drive level on the UART and CBUS I/O pins.
Load VCP Driver
Enabled
Makes the device load the VCP driver interface for the device.
Invert TXD
Disabled
Signal on this pin becomes TXD# if enable.
Invert RXD
Disabled
Signal on this pin becomes RXD# if enable.
Invert RTS#
Disabled
Signal on this pin becomes RTS if enable.
Invert CTS#
Disabled
Signal on this pin becomes CTS if enable.
Table 8-1 – Default Internal EEPROM Configuration
The internal EEPROM in the cable can be re-programmed over USB using the utility program FT_PROG.
FT_PROG can be downloaded from the www.ftdichip.com.