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FT2232L Dataheets PDF



Part Number FT2232L
Manufacturers FTDI
Logo FTDI
Description Dual USB UART/FIFO
Datasheet FT2232L DatasheetFT2232L Datasheet (PDF)

FT2232L Dual USB UART / FIFO I.C. 1.0 The FT2232L is the lead free version of FTDI’s 3rd generation USB UART / FIFO I.C. family. This device features two Multi-Purpose UART / FIFO controllers which can be configured individually in several different modes. As well as a UART interface, FIFO interface and Bit-Bang IO modes of the 2nd generation FT232BM and FT245BM devices, the FT2232L offers a variety of additional new modes of operation, including a Multi-Protocol Synchronous Serial Engine inter.

  FT2232L   FT2232L


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FT2232L Dual USB UART / FIFO I.C. 1.0 The FT2232L is the lead free version of FTDI’s 3rd generation USB UART / FIFO I.C. family. This device features two Multi-Purpose UART / FIFO controllers which can be configured individually in several different modes. As well as a UART interface, FIFO interface and Bit-Bang IO modes of the 2nd generation FT232BM and FT245BM devices, the FT2232L offers a variety of additional new modes of operation, including a Multi-Protocol Synchronous Serial Engine interface which is designed specifically for synchronous serial protocols such as JTAG and SPI bus. Introduction 1.1 • • • • • • • • HARDWARE FEATURES Features Summary Reset input and Reset Output pins • • • • • • • • • • • • • • • • • • • • • • • • 5V and 3.3V logic IO Interfacing with independent level conversion on each channel Integrated 3.3V LDO Regulator for USB IO Integrated 6MHz – 48Mhz clock multiplier PLL USB Bulk or Isochronous data transfer modes 4.35V to 5.25V single supply operating voltage range UHCI / OHCI / EHCI host controller compatible USB 2.0 Full Speed (12 Mbits / Second) compatible Compact 48-LD Lead Free LQFP package Windows 98 / 98 SE / 2000 / ME / XP Linux 2.40 and greater Windows CE MAC OS-8 and OS-9** MAC OS-X Windows 98 / 98 SE / 2000 / ME / XP Linux 2.4 and Greater USB Dual Port RS232 Converters USB  Dual Port RS422 / RS485 Converters Upgrading Legacy Peripheral Designs to USB USB Instrumentation USB JTAG Programming USB to SPI Bus Interfaces USB Industrial Control Field Upgradable USB Products Galvanically Isolated Products with USB Interface VIRTUAL COM PORT (VCP) DRIVERS for Single Chip USB  Dual Channel Serial / Parallel Ports with a variety of configurations Entire USB protocol handled on the chip...no USBspecific firmware programming required FT232BM-style UART interface option with full Handshaking & Modem interface signals UART Interface supports 7 / 8 bit data, 1 / 2 stop bits, and Odd / Even / Mark / Space / No Parity Transfer Data Rate 300 to 1 Mega Baud (RS232) Transfer Data Rate 300 to 3 Mega Baud (TTL and RS422 / RS485) Auto Transmit Enable control for RS485 serial applications using TXDEN pin FT245BM-style FIFO interface option with bidirectional data bus and simple 4 wire handshake interface • • • • • • • • • • • Transfer Data Rate up to 1 MegaByte / Second Enhanced Bit-Bang Mode interface option New Synchronous Bit-Bang Mode interface option New Multi-Protocol Synchronous Serial Engine (MPSSE) interface option New MCU Host Bus Emulation Mode option New Fast Opto-Isolated Serial Interface Mode option Interface mode and USB Description strings configurable in external EEPROM EEPROM Configurable on board via USB Support for USB Suspend and Resume conditions via PWREN#, and SI / WU pins Support for bus powered, self powered, and highpower bus powered USB configurations Integrated Power-On-Reset circuit, with optional DS2232L Version 1.4 D2XX (USB Direct Drivers + DLL S/W Interface) APPLICATION AREAS [ ** = In planning or under development ] © Future Technology Devices International Ltd. 2005 Page 1 of 54 FT2232L Dual USB UART / FIFO I.C. 1.2 General Description The FT2232L is a USB interface which incorporates the functionallity of two of FTDI’s second generation BM chips into a single device. A single downstream USB port is converted to two IO channels which can each be individually configured as a FT232BM-style UART interface, or a FT245BM-style FIFO interface, without the need to add a USB hub. There are also several new special modes which are either enabled in the external EEPROM, or by using driver commands. These include Synchronous Bit-Bang Mode, a CPU-Style FIFO Interface Mode, a Multi-Protocol Synchronous Serial Engine Interface Mode, MCU Host Bus Emulation Mode, and Fast Opto-Isolated Serial Interface Mode. In addition a new high drive level option means that the device UART / FIFO IO pins will drive out at around three times the normal power level, meaning that the bus can be shared by several devices. Classic BM-style Asynchronous Bit-Bang Mode is also supported, but has been enhanced to give the user access to the device’s internal RD# and WR# strobes. FTDI provide a royalty free Virtual Com Port (V.C.P) driver that makes the peripheral ports look like a standard COM port to the PC. Most existing software applications should be able interface with the Virtual Com Port simply by reconfiguring them to use the new ports created by the driver. Using the VCP drivers an application programmer would communicate with the device in exactly the same way as they would a regular PC COM port - using the Windows VCOMM API calls or a COM port library. The FT2232L driver also incorporates the functions defined for FTDI’s D2XX drivers, allowing applications programmers to interface software directly to the device using a Windows DLL. Details of the driver and the programming interface can be found on FTDI’s website at www.ftdichip.com. DS2232L Version 1.4 © Future Technol.


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