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FT232RN Datasheet(PDF) 30 Page - Future Technology Devices International Ltd. |
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FT232RN Datasheet(HTML) 30 Page - Future Technology Devices International Ltd. |
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30 / 40 page  Copyright © Future Technology Devices International Limited 30 FT232RN USB UART IC Datasheet Version 1.0 Document No.: FT_001521 Clearance No.: FTDI#571 8 Internal EEPROM Configuration Following a power-on reset or a USB reset the FT232RN will scan its internal EEPROM and read the USB configuration descriptors stored there. The default factory programmed values of the internal EEPROM are shown 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 in USB suspend mode (PWREN# is high). Manufacturer Name FTDI Product Description FT232R USB UART Max Bus Power Current 90mA Power Source Bus Powered Device Type FT232R 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) as opposed to a USB 2.0 High Speed device (480Mb/s). Remote Wake Up Enabled Taking RI# low will wake up the USB host controller from suspend in approximately 20 ms. High Current I/Os Disabled 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. CBUS0 TXLED# Default configuration of CBUS0 – Transmit LED drive. CBUS1 RXLED# Default configuration of CBUS1 – Receive LED drive. CBUS2 TXDEN Default configuration of CBUS2 – Transmit data enable for RS485 CBUS3 PWREN# Default configuration of CBUS3 – Power enable. Low after USB enumeration, high during USB suspend mode. CBUS4 SLEEP# Default configuration of CBUS4 – Low during USB suspend mode. 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. Invert DTR# Disabled Signal on this pin becomes DTR if enable. Invert DSR# Disabled Signal on this pin becomes DSR if enable. Invert DCD# Disabled Signal on this pin becomes DCD if enable. Invert RI# Disabled Signal on this pin becomes RI if enable. Table 8.1 Default Internal EEPROM Configuration The internal EEPROM in FT232RN can be programmed over USB using the FTDI utility program FT_PROG. FT_PROG can be downloaded from FTDI Utilities on the FTDI website (www.ftdichip.com). Version 2.8a or later is required for the FT232RN chip. 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 for this service. |
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