FTDI device pinout

IF/1 1	IF/2 3	BitBang	UART	I2C	SPI	JTAG	C232HD cable
ADBUS0	BDBUS0	GPIO0	TxD	SCK	SCLK	TCK	Orange
ADBUS1	BDBUS1	GPIO1	RxD	SDA/O 2	MOSI	TDI	Yellow
ADBUS2	BDBUS2	GPIO2	RTS	SDA/I 2	MISO	TDO	Green
ADBUS3	BDBUS3	GPIO3	CTS	GPIO3	CS0	TMS	Brown
ADBUS4	BDBUS4	GPIO4	DTR	GPIO4	CS1/GPIO4		Grey
ADBUS5	BDBUS5	GPIO5	DSR	GPIO5	CS2/GPIO5		Purple
ADBUS6	BDBUS6	GPIO6	DCD	GPIO6	CS3/GPIO6		White
ADBUS7	BDBUS7	GPIO7	RI	RSCK 4	CS4/GPIO7	RCLK	Blue
ACBUS0	BCBUS0			GPIO8	GPIO8
ACBUS1	BCBUS1			GPIO9	GPIO9
ACBUS2	BCBUS2			GPIO10	GPIO10
ACBUS3	BCBUS3			GPIO11	GPIO11
ACBUS4	BCBUS4			GPIO12	GPIO12
ACBUS5	BCBUS5			GPIO13	GPIO13
ACBUS6	BCBUS6			GPIO14	GPIO14
ACBUS7	BCBUS7			GPIO15	GPIO15

1

16-bit port (ACBUS, BCBUS) is not available with FT4232H series, and FTDI2232C/D only support 12-bit ports.

2(1,2)

FTDI pins are either configured as input or output. As I²C SDA line is bi-directional, two FTDI pins are required to provide the SDA feature, and they should be connected together and to the SDA I²C bus line. Pull-up resistors on SCK and SDA lines should be used.

3

FT232H does not support a secondary MPSSE port, only FT2232H and FT4232H do. Note that FT4232H has 4 serial ports, but only the first two interfaces are MPSSE-capable. C232HD cable only exposes IF/1 (ADBUS).

4

In order to support I2C clock stretch mode, ADBUS7 should be connected to SCK. When clock stretching mode is not selected, ADBUS7 may be used as GPIO7.