FT2232D Detailed explanation of pin function specifications and circuit principle instructions

The "FT2232D" is a model of USB-to-serial adapter from FTDI (Future Technology Devices International). It is commonly used in embedded systems for Communication between USB ports and various types of serial peripherals. The FT2232D is part of FTDI's series of devices that bridge USB and serial interface s.

1. Package Type and Pinout

The FT2232D typically comes in LQFP (Low-Profile Quad Flat Package) and VQFN (Very thin Quad Flat No-lead) packages. The most common version has 48 pins.

2. Pinout and Function Specifications for FT2232D (48-pin version)

Here is the pinout and detailed explanation of each pin's function for the 48-pin LQFP package:

Pin Number Pin Name Function Description 1 VCCIO Supply Voltage for IO. 3.3V or 5V depending on application. 2 GND Ground pin. 3 TXD0 Transmit Data for channel A (UART) or interface. 4 RXD0 Receive Data for channel A (UART) or interface. 5 RTS0 Request to Send for channel A (UART). 6 CTS0 Clear to Send for channel A (UART). 7 DTR0 Data Terminal Ready for channel A (UART). 8 DSR0 Data Set Ready for channel A (UART). 9 RI0 Ring Indicator for channel A (UART). 10 DCD0 Data Carrier Detect for channel A (UART). 11 GND Ground pin. 12 VCCIO Supply Voltage for IO. 13 TXD1 Transmit Data for channel B (UART) or interface. 14 RXD1 Receive Data for channel B (UART) or interface. 15 RTS1 Request to Send for channel B (UART). 16 CTS1 Clear to Send for channel B (UART). 17 DTR1 Data Terminal Ready for channel B (UART). 18 DSR1 Data Set Ready for channel B (UART). 19 RI1 Ring Indicator for channel B (UART). 20 DCD1 Data Carrier Detect for channel B (UART). 21 GND Ground pin. 22 VCCIO Supply Voltage for IO. 23 TDI Test Data In for JTAG interface. 24 TDO Test Data Out for JTAG interface. 25 TMS Test Mode Select for JTAG interface. 26 TCK Test Clock for JTAG interface. 27 TRST Test Reset for JTAG interface. 28 ADBUS0 Address bus for data exchange. 29 ADBUS1 Address bus for data exchange. 30 ADBUS2 Address bus for data exchange. 31 ADBUS3 Address bus for data exchange. 32 ADBUS4 Address bus for data exchange. 33 ADBUS5 Address bus for data exchange. 34 ADBUS6 Address bus for data exchange. 35 ADBUS7 Address bus for data exchange. 36 ALE Address Latch Enable for timing. 37 WR Write Control for peripheral devices. 38 RD Read Control for peripheral devices. 39 OE Output Enable for bus. 40 RESET Reset pin for the FT2232D. 41 VCC Power supply voltage for the chip. 42 GND Ground pin. 43 CLKOUT Clock Output for external devices. 44 NC No Connection. 45 NC No Connection. 46 NC No Connection. 47 NC No Connection. 48 NC No Connection.

3. Pin Function FAQ (20 Questions)

Q1: What is the function of TXD0 on the FT2232D? A1: TXD0 is the transmit data line for channel A, used to send serial data to an external device.

Q2: Can I use the FT2232D at 3.3V or 5V logic? A2: Yes, the FT2232D supports both 3.3V and 5V logic, and the voltage can be configured depending on the application.

Q3: What does DTR0 pin do? A3: DTR0 is the Data Terminal Ready signal for channel A, used in UART communication to indicate the readiness of the terminal.

Q4: What is the role of the RESET pin? A4: The RESET pin is used to reset the FT2232D chip.

Q5: Can I use the FT2232D for JTAG programming? A5: Yes, the FT2232D supports JTAG programming, and the TDI, TDO, TMS, TCK pins are used for this purpose.

Q6: How do I configure the speed of the UART interfaces? A6: The speed is configured via the driver or software control, with baud rate settings ranging from 300 baud to 12 Mbps.

Q7: Does the FT2232D support half-duplex communication? A7: Yes, it can be configured for half-duplex communication in UART, and it supports full-duplex as well.

Q8: How many UARTs does the FT2232D support? A8: The FT2232D supports two independent UARTs: channel A and channel B.

Q9: What is the function of the GND pin? A9: GND pins provide the ground reference for the entire chip.

Q10: How do I communicate with external peripherals using the FT2232D? A10: Communication is typically done through UART, FIFO, or JTAG protocols depending on the configuration and connected devices.

Q11: Does the FT2232D support USB 3.0? A11: No, the FT2232D supports USB 2.0, but it works efficiently for most embedded systems that don't require USB 3.0 speeds.

Q12: Can the FT2232D be used with FPGA ? A12: Yes, the FT2232D can interface with FPGAs, especially for programming and data exchange.

Q13: What is the maximum data transfer rate? A13: The maximum data transfer rate is typically up to 12 Mbps for the UART interfaces.

Q14: How do I reset the FT2232D chip? A14: You can reset the chip using the RESET pin or by power cycling the device.

Q15: What does CTS0 stand for? A15: CTS0 is the Clear to Send signal for UART channel A, used in hardware flow control to indicate that the channel is ready to receive data.

Q16: Can I interface the FT2232D with SPI devices? A16: Yes, the FT2232D can support SPI (Serial Peripheral Interface) with the proper configuration.

Q17: What is the function of TRST pin in JTAG? A17: TRST is the Test Reset pin for the JTAG interface, used to reset the JTAG chain.

Q18: How do I manage the voltages in the FT2232D? A18: Voltages are managed by the VCCIO pin, and the logic voltage level can be set to either 3.3V or 5V.

Q19: Can the FT2232D be used for RS232 communication? A19: Yes, the FT2232D can be used for RS232 communication via its UART channels.

Q20: Does the FT2232D provide FIFO support? A20: Yes, the FT2232D has FIFO support for efficient data transfer.

This should give a complete overview of the FT2232D with pin details and common FAQ for its usage. Let me know if you need further explanations or additional details!