FT2232D-REEL Detailed explanation of pin function specifications and circuit principle instructions (2)

FT2232D-REEL Detailed explanation of pin function specifications and circuit principle instructions

The part number " FT2232D -REEL" is a USB-to-serial/FIFO interface device from FTDI Chip. The FT2232D is a dual-port USB device with a variety of functions, including USB-to-UART (RS232), USB-to-FIFO (with 245-type parallel interface), and USB-to-JTAG. FTDI is a recognized manufacturer of USB solutions.

Pinout and Package Information

The FT2232D typically comes in a QFN-48 package, which has 48 pins. Below is a detailed explanation of the pin functions for all 48 pins of the FT2232D.

Pin Function Specification for FT2232D

Pin Number Pin Name Description 1 VBUS USB Bus Voltage Input. Connect to USB 5V line. 2 VCCIO IO Supply Voltage (3.3V or 5V depending on external configuration). 3 GND Ground 4 TDI Test Data In for JTAG. Used for JTAG testing. 5 TMS Test Mode Select for JTAG. Used for JTAG testing. 6 TCK Test Clock for JTAG. Used for JTAG testing. 7 TDO Test Data Out for JTAG. Used for JTAG testing. 8 I/O0 (TXD0) Serial transmit data for UART channel 0 (RS232/TTL). 9 I/O1 (RXD0) Serial receive data for UART channel 0 (RS232/TTL). 10 I/O2 (TXD1) Serial transmit data for UART channel 1 (RS232/TTL). 11 I/O3 (RXD1) Serial receive data for UART channel 1 (RS232/TTL). 12 I/O4 (RTS0) Request to Send (RTS) for UART channel 0 (RS232/TTL). 13 I/O5 (CTS0) Clear to Send (CTS) for UART channel 0 (RS232/TTL). 14 I/O6 (RTS1) Request to Send (RTS) for UART channel 1 (RS232/TTL). 15 I/O7 (CTS1) Clear to Send (CTS) for UART channel 1 (RS232/TTL). 16 I/O8 (DTR0) Data Terminal Ready (DTR) for UART channel 0. 17 I/O9 (DSR0) Data Set Ready (DSR) for UART channel 0. 18 I/O10 (DTR1) Data Terminal Ready (DTR) for UART channel 1. 19 I/O11 (DSR1) Data Set Ready (DSR) for UART channel 1. 20 I/O12 (DCD0) Data Carrier Detect (DCD) for UART channel 0. 21 I/O13 (DCD1) Data Carrier Detect (DCD) for UART channel 1. 22 I/O14 (RI0) Ring Indicator (RI) for UART channel 0. 23 I/O15 (RI1) Ring Indicator (RI) for UART channel 1. 24 CBus0 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 25 CBus1 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 26 CBus2 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 27 CBus3 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 28 CBus4 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 29 CBus5 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 30 CBus6 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 31 CBus7 General Purpose I/O, can be configured for various functions such as USB suspend or resume. 32 TXE0 Transmit Enable for UART channel 0. 33 TXE1 Transmit Enable for UART channel 1. 34 RXF0 Receive FIFO Empty for UART channel 0. 35 RXF1 Receive FIFO Empty for UART channel 1. 36 RTS0 Request to Send for UART channel 0. 37 RTS1 Request to Send for UART channel 1. 38 RSTIN Reset Input. This pin is used to reset the device. 39 RSTOUT Reset Output. Used to indicate when the chip has been reset. 40 I/O0 GPIO pin that can be used as a general-purpose input or output. 41 I/O1 GPIO pin that can be used as a general-purpose input or output. 42 I/O2 GPIO pin that can be used as a general-purpose input or output. 43 I/O3 GPIO pin that can be used as a general-purpose input or output. 44 I/O4 GPIO pin that can be used as a general-purpose input or output. 45 I/O5 GPIO pin that can be used as a general-purpose input or output. 46 I/O6 GPIO pin that can be used as a general-purpose input or output. 47 I/O7 GPIO pin that can be used as a general-purpose input or output. 48 GND Ground

FT2232D FAQ

1. What is the function of the VBUS pin on the FT2232D? The VBUS pin is connected to the USB 5V power source. 2. Can I use the FT2232D with 5V or 3.3V logic? Yes, the FT2232D supports both 5V and 3.3V logic, selectable via the VCCIO pin. 3. What type of USB connector does the FT2232D support? The FT2232D supports a USB Type A connector for standard USB devices. 4. How many UART channels does the FT2232D have? The FT2232D has two UART channels, each with its own set of pins for TXD, RXD, RTS, and CTS. 5. What is the purpose of the CBus pins? The CBus pins can be configured as General Purpose I/O for custom functions, such as controlling USB suspend, resume, or signaling. 6. What is the maximum data rate for the FT2232D's UART? The FT2232D supports up to 3 Mbps on the UART channels. 7. Does the FT2232D support JTAG? Yes, the FT2232D includes a JTAG interface with pins TDI, TMS, TCK, and TDO. 8. Can the FT2232D be used as a USB-to-RS232 adapter? Yes, the FT2232D can convert USB to RS232 using its UART channels. 9. Is the FT2232D compatible with Windows and Linux? Yes, the FT2232D is supported by Windows, Linux, and macOS through FTDI's drivers. 10. How do I configure the FT2232D for custom applications? You can configure the FT2232D through its CBus pins, adjusting the pin settings via FTDI’s D2XX driver. 11. What is the reset pin on the FT2232D for? The RSTIN pin is used to reset the device when required. 12. What is the purpose of the RXF pin? The RXF pin indicates whether the receive FIFO for UART channel 0 or 1 is full. 13. Can the FT2232D support both 5V and 3.3V logic on different channels? Yes, the VCCIO pin allows different voltage levels for each channel. 14. What is the difference between the FT2232D and FT232R? The FT2232D has two UART channels and additional features like JTAG support, while the FT232R has one UART channel. 15. What is the function of the TXE pin? The TXE pin signals when the transmit FIFO for the respective UART channel is empty. 16. Can I use the FT2232D for low-speed USB communication? Yes, the FT2232D supports both high-speed (480Mbps) and low-speed (12Mbps) USB communication. 17. What is the maximum number of I/O pins available? The FT2232D provides 8 GPIO pins (I/O0 to I/O7), which can be configured for custom functions. 18. What power supply does the FT2232D require? The FT2232D operates on 5V for USB power, but VCCIO can be 3.3V or 5V depending on the logic level needed. 19. Can the FT2232D be used for USB-to-FIFO communication? Yes, the FT2232D supports FIFO communication via the FTDI's FT245 interface. 20. How do I enable JTAG on the FT2232D? To use JTAG, connect the TDI, TMS, TCK, and TDO pins and enable the JTAG interface in software.

This should give you a comprehensive understanding of the FT2232D's pinout, its functionality, and how to use it effectively for your application.